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1. 5 ag HIA ak Figure 5 28 Testing a Fuel Injector 3 68 ms INJECTION PULSE 896 v maximum 720v 2ms DIV FUEL INJECTOR e VEHICLE DATA MOVE Figure 5 29 Result Display from a Fuel Injector Test Automotive Applications 5 49 Conventional Saturated Switch Driver Fuel Injector Peak voltage caused by the collaps of the injector coil Driver transistor turns on pulling the injector pintle away from its seat starting fuel flow wa Battery voltage Driver transitor turns off or source voltage discontinuing fuel flow supplied to the injector l Injector ON Time Specifications may vary Consult manufacturer s specifications Fluke 98 Users Manual Pulse Width Modulated Fuel Injector Current flow pulsed on and off enough to keep hold in winding activated Peak voltage caused by the collapse of the injector coil when current is reduced Battery voltage or source voltage supplied to the injector Driver transistor turns on pulling the injector pintle away from its seat starting fuel Return to ba
2. dual output CURSOR 1 CURSOR 2 dig esp nsa Qin Sample value at Sample value at CURSOR 1 position on CURSOR 2 position on the INPUT A waveform the INPUT A waveform Time difference between Sample value at CURSOR 1 and Sample value at CURSOR 1 position on CURSOR 2 CURSOR 2 position on the INPUT B waveform positions the INPUT B waveform Figure 4 10 Cursor reading for dual input use 4 16 Fluke 98 Users Manual USING THE SMOOTH FUNCTION This function allows you to adjust a filter that removes noise from displayed waveforms Use this function if the displayed waveform exhibits too much noise or if readings are unstable so you can hardly examine the results CAUTION The smooth function also removes spikes from the waveform If the signal normally exibits spikes they are removed See Figure 4 11 SMOOTH is disabled for IGNITION functions Note Always try to prevent noise as much as possible by correct grounding and by using shielded test leads Displays the Function Key Menu for SMOOTH control Each automotive test has its own default NORMAL smooth setting er E Press the F2 key to minimize smoothing When you set smooth to the minimum the test tool turns glitch detection on to display glitches not valid for MULTIMETER functions Press the F3 key to increase smoothing See the following figure NORMAL Press this key to return to the normal defa
3. The following Figures show the results on the instrument screen 898 1583 RPM 29 ADVANCE 150 apvence iy B toy 2ms DIV E B 2ms DIV ADVANCE e ADVANCE e VEHICLE CURSOR RANGE B RANGE A VEHICLE CURSOR RANGE B RANGE A DATA 1 MOVE B MOVE A DATA 1 MOVE B MOVE A Figure 5 63 Advance at ldle Figure 5 64 Advance at 1700 RPM Chapter 6 User Maintenance CEEANING D abt PA he han ite Mee 6 2 KEEPING BATTERIES IN OPTIMAL CONDITION 6 2 REPLACING AND DISPOSING OF BATTERIES 6 4 FUSES NOT REQUIRED CALIBRATING 10 1 TEST LEADS 6 6 6 2 Fluke 98 Users Manual A WARNING RISK OF ELECTRIC SHOCK OR FIRE USE ONLY INSULATED PROBES TEST LEADS AND CONNECTORS SPECIFIED IN THIS MANUAL WHEN MAKING MEASUREMENTS gt 42V 30V RMS ABOVE EARTH GROUND OR ON CIRCUITS gt 4800 VA USE PROBES AND TEST LEADS WITHIN RATINGS AND INSPECT BEFORE USE REMOVE UNUSED PROBES AND TEST LEADS REMOVE PROBES AND TEST LEADS BEFORE OPENING CASE OR BATTERY COVER WHEN THE TEST TOOL IS CONNECTED TO ITS POWER ADAPTER BATTERY CHARGER TERMINALS MAY BE LIVE AND THE OPENING OF COVERS OR REMOVAL OF PARTS EXCEPT THOSE THAT CAN BE ACCESSED BY HAND IS LIKELY TO EXPOSE LIVE PARTS THE TEST TOOL MUST BE DISCONNECTED FROM ALL VOLTAGE SOURCES BEFORE IT IS OPENED FOR ANY ADJUSTMENT REPLACEMENT MAINTENAN
4. 1 19 COM as single 1 20 GROUNDING GUIDELINES 1 21 Problems with Incorrect Grounding 1 21 Test Tool Grounding for Measurements on the Ignition System 1 22 2 Fluke 98 Users Manual Measurement Inputs Display ls Jf Jl Jf Je Push Ze X Buttons NL A FREEZE SAVE AUTO me gange o Power On Off Key Backlight and Contrast ST8036 Introducing your Automotive ScopeMeter Test Tool 1 3 INTRODUCTION Your new Fluke Automotive ScopeMeter test tool is a powerful instrument with a wide variety of capabilities Its menu driven interface has automatic configurations for most of your tests so you will find that the test tool is easy to use Continuous AUTO RANGE an exclusive Fluke feature constantly acquires and displays the best possible signal The secondary ignition pickup and automated ignition functions make it easy for you to analyze an ignition system malfunction The Relative Compression mode helps you quickly find a low compression cylinder The Secondary Ignition Single function displays the waveform along with the spark voltage RPM burn time and burn voltage Many problems you will encounter are under a load on a road test The Intermittent Record function can find a
5. bend RUE cele VI GIOUNGING xs mundo Oe aeu EE EIER Emi 1 22 Grounding 1 21 H Hard Garryinig Case cec nem Be SEA Ie pee Wu E Ru V Adapter sc RP PR CERE EX catered te EE VI 3 4 5 65 HOLD pudet eis uc tuse frd d ut Er Em ie Us ete E 1 15 4 12 POISE sia on d dust te per best eget t DX d V Horizontal Range sssessseeeeleeee nnn 1 17 Horizontal 3 12 Idle Air Control Idle Speed 5 54 Inductive PICKUp 2 ori Re VI 3 4 Information 1 10 1 14 1 16 1 18 Instrument Setup 3 56 Intake Air Temperature 5 13 IriVerse VIdGO aches 3 59 K Key Descriptions 2 gop a ee a E Ue dps 1 14 Keypad Overview 1 13 Knock SENSO zr eet erie ee ach ei etl dota du ee EE 5 57 L language x t ter iD a ere MAC ee ee 3 61 Limitation of Liability lcs RII 7 19 low Pass Filter Probe line ee le Ar YS 3 6 1 4 Fluke 98 Users Manual M Manifold Absolute Pressure MAP 5 3 Master ReSebo dise Eros eds pu 1 7 2 3 M nu OverVieW seis came ve e Rm p gei
6. 20ms DIV pa CURSOR BACK lt a SEARCH PRINT 2 Press and to step back and forth through the recorded screens Press to return to the normal test mode 2 28 Fluke 98 Users Manual RECORD FLIGHT RECORD The test tool s FLIGHT RECORD function records up to 40 successive screens that have been displayed from start recording Exercise Record the simulated ignition signal from the Demo Board still connected from the previous exercise with the FLIGHT RECORD function Steps Press the RECORD key to open the selection Menu Use the arrow keys to highlight FLIGHT RECORD bi RECORD MIN MAX TRENDPLOT INTERMITTENT RECORD Press SELECT to confirm your selection FLIGHT RECORD is activated If there is previous record data in memory a message will appear on the display If you press YES recording starts If you press f gt NO recording is cancelled The present contents of the record memory will be lost Are you sure VES NO Tutorial Do Change RPM by turning the RPM potentiometer for a few seconds To stop the recording press any key 144 kY SPARK VOLTAGE VIEW 1290 2 08 BURN TIME 1 20 kv BURN voLrasE 20kV S5kV 2ms DIV SECONDARY DIS k lt BACK 4 SEARCH PRINT Press and to step back and forth through the recorded screens 2 30 Fluke 98 Users Manual SAVE RECALL OF SCREENS
7. 824 132 v END oF SIGI HOLD 10008 800 600 400 2080 5 BATTERY TEST Press to SL 200A RE 200ms DIV BATTERY TEST ie measure HUE voltage EPEA Press to measure current with the optional current probe Press to repeat the test This test is a single shot measurement which means that the signal is displayed only once To get a new test result stop the engine press the F3 key and crank the engine again This screen displays the battery voltage during cranking BEGINNING OF SIGNAL Indicates the battery voltage at the beginning of the test Indicates the minimum voltage during the test Indicates the battery voltage at the end of the test charging voltage when engine runs MINIMUM END OF SIGNAL This screen displays the battery current output during cranking MAXIMUM Indicates the maximum current during the test END OF SIGNAL Indicates the battery current at the end of the test charging current when engine runs Using the Automotive ScopeMeter Test Tool 3 33 Potentiometer menu J ELECTRICAL POTENTIOMETER This menu option performs the same as POTENTIOMETER in the SENSORS MENU Refer to the description of this menu option on page 3 19 3 34 Fluke 98 Users Manual Solenoid and Diode Use this menu option to test a solenoid and a clamping diode which is connected across the solenoid The clamping diode sh
8. 1 15 SECONDARY IGNITION SINGLE ON DIS 1 17 INJECTION TEST sss sss 1 19 RECORD PLOT READINGS 1 21 RECORD MIN MAX TRENDPLOT 1 23 RECORD INTERMITTENT RECORD 1 25 RECORD FLIGHT RECORD 1 28 SAVE RECALL OF SCREENS 1 30 CURSOR KEY FUNCTION 1 32 2 2 Fluke 98 Users Manual INTRODUCTION This chapter demonstrates how to use several test functions of the Automotive ScopeMeter test tool The Demo Board is used to supply the test signals necessary for the test simulation Figure 2 1 shows the setup used for this tutorial Figure 2 1 Tutorial Setup Tutorial 2 3 POWER ON OFF BACKLIGHT CONTRAST POWER ON Press and release the power on off key The test tool beeps once and turns on The display shows the test tool model data Press any key to continue BACKLIGHT Press and release the backlight key The display backlight is set to the minimum intensity Press and release the backlight key The display backlight is set to medium intensity Press and release the backlight key The display backlight is set to the maximum intensity CONTRAST Press and hold the backlight key until desired contrast is achieved on the display SWITCHING OFF Press and release the power on off key The test tool turns off
9. 1 3 3 6 3 55 3 62 Terminology i iua Eien LER ante 7 21 Test Lead Setup nen ere ie edie eet E 3 62 Test Leads ni voco Geass Eee ete png 3 3 Throttle Body Injection System 5 50 Throttle Position 5 16 Timebase uela ere DS Spes 1 14 1 15 3 12 3 39 Timing Advance mew uber bm bra o iau id 5 76 Trace Persistence inary eni eX IR bd ASUNT TU UEM 3 59 Trigger Control 3 43 Trigger Level ns sis eee ua 1 14 3 39 3 43 3 44 Trigger SIOpe cuu socer neuer dm eR Pil ane eae ete S 3 44 Trigger Source iapa a RERO ERU DR RUEDA NUS eee 3 39 3 44 U Unpacklngrs x ehe mpi AG V V Mehicle Data aem et vet een e een NA RU T amu 3 57 Vehicle Speed 5 5 29 Vertical Ranges ucuiee pte vEDEEER4 ERIS eis 1 17 3 12 3 39 AG diii ede SE ER e Rea EA ES 3 48 Moltage Drop uiu pu Ee bck 3 35 5 88 Voltage Reference and Ground 5 90 Voltage Test RA ADI eee Y 2 5 W Warranty eai vee deed RIA EUR dE MAT e REEL neu 7 19 Waveform zs unisce pues eem arie exerc eee urbs ide
10. 3 49 Measuring 3 51 Testing Frequency Duty Cycle or Pulse Width 3 52 esting Current acier ERIS Ade AED a 3 54 Testing Temperature 3 55 CHANGING THE VEHICLE DATA AND INSTRUMENT SETUP 3 56 Setup Overview 3 56 Changing Vehicle Data 3 57 Changing Instrument 3 58 Changing Test Lead Setup 3 62 Using the Automotive ScopeMeter Test Tool 3 3 INTRODUCTION This section provides general information for automotive measurements with the test tool Probes and Test Leads The test tool displays information about the type of probe to use referred to as Connection Help before you enter a new test In addition Chapter 5 Automotive Applications depicts the required connections and the use of probes test leads and adapters for each application Overview of the Standard Set of Probes Test Leads and Test Lead Adapters STL 90 Shielded Test Leads Red and grey with ground leads For general purpose use 1 1 Connected to BNC inputs red INPUT A and grey INPUT B Two pieces black Used for the extension of the Shielded Test Leads PM9096 101 Secondary Pickup Europe only Used for secondary ignition tests Connected to INPUT A Fluke 98
11. e Do not perform internal service or adjustment of this product unless you are qualified to do so A WARNING DO THE FOLLOWING TO AVOID ELECTRICAL SHOCK BEFORE USING THE AUTOMOTIVE SCOPEMETER TEST TOOL 1 MAKE SURE THAT THE VEHICLE TO BE TESTED IS AT A SAFE POTENTIAL BEFORE MAKING ANY MEASUREMENT CONNECTIONS 2 CONNECT THE COM INPUT OF THE TEST TOOL TO VEHICLE GROUND BEFORE CLAMPING THE STANDARD SUPPLIED SECONDARY PICKUP OR THE INDUCTIVE PICKUP ON THE IGNITION WIRES THIS GROUND CONNECTION IS REQUIRED IN ADDITION TO THE NORMAL MEASUREMENT GROUND CONNECTIONS Safety IX WARNING DO THE FOLLOWING TO AVOID ELECTRICAL SHOCK IF THE GROUND OF THE AUTOMOTIVE SCOPEMETER TEST TOOL IS CONNECTED TO A VOLTAGE HIGHER THAN 42V PEAK 30V RMS 1 USE ONLY THE TEST LEAD PROBE SET SUPPLIED WITH THE AUTOMOTIVE SCOPEMETER TEST TOOL OR SAFETY DESIGNED EQUIVALENTS WITHOUT EXPOSED METAL CONNECTORS 2 DO NOT USE CONVENTIONAL EXPOSED METAL BNC OR BANANA PLUG CONNECTORS IF THE GROUND POTENTIAL OF THE AUTOMOTIVE SCOPEMETER TEST TOOL IS HIGHER THAN 42V PEAK 30V RMS 3 USE ONLY ONE GROUND CONNECTION TO THE AUTOMOTIVE SCOPEMETER TEST TOOL GROUND LEAD OF THE PROBE ON INPUT A 4 REMOVE ALL PROBES AND TEST LEADS THAT ARE NOT IN USE 5 USE ONLY THE SUPPLIED PROBE TIP ADAPTERS OR 600V RATED TYPES 6 CONNECT THE PM8907 POWER ADAPTER TO THE AC OUTLET BEFORE CONNECTING IT TO THE AUTOMOTIVE SCOPEMETER TEST TOOL WARNING DO NOT USE THE AUTO
12. Peak voltage indicates maximum air flow entering intake manifold A voltage decrease indicates less air is flowing into the intake manifold A voltage increase identifies an increase of airflow into the intake manifold Minimum voltage indicates a closed throttle plate Specifications may vary Consult manufacturer s specifications Automotive Applications 5 43 10 Exhaust Gas Recirculation EGR Pulse Width Control Potentiometer Sensor CONTROL EGR dilutes the air fuel mixture and limits NO formation when combustion temperatures are high and air fuel ratios are lean On a gasoline engine EGR should operate during moderate acceleration and at cruising speeds from 30 to 70 mph 50 to 120 km h The ECU controls the application of EGR by applying or blocking vacuum providing a signal to de energize or energize a solenoid or by using a pulse width modulated solenoid SENSOR Variable position sensors provide a dc voltage level that changes as the arm on a variable resistor potentiometer is moved An EGR valve position sensor is simply a variable resistor connected to a plunger shaft that rides atop the EGR valve The changing dc voltage is used as an input to the electronic control unit to indicate EGR operation Measurement Conditions Control e Engine RUNNING With the test tool connected to the EGR valve slowly increase engine speed to cruise speed NOTE Most EGR valves will not op
13. 1 40 kv BURN VOLTAGE 20k cS5kV 1 2ms DIV 0 4 BACK lt SEARCH C PRINT 4 12 Fluke 98 Users Manual FREEZING PRINTING SAVING AND RECALLING SCREENS FREEZE SAVE Freezes the display and shows the RECALL SAVE RECALL AR Function Key Menu to save recall SAVE CLE BACK SCREEN RECALL PRINT MEMORY print the actual screen or to clear the memory HOLD appears in the top ley ro s ra irs 1 E2 F4 J right of the display if the test tool was 2 busy measuring Press this key to resume measuring to return to the previous display F1 Fa Copies the screen to the printer Make sure that the test tool setup F4 matches with the connected printer See the section CHANGING INSTRUMENT SETUP in Chapter 3 SAVE SCREEN Fo Saves the present screen in the next free memory location F2 A message is displayed to tell you screen has been saved in which memory location the nj ren 4 OK screen is saved BE F1 When all memory locations are filled from previous save actions a memory Lust pe everqeit kon Overwrite memory 1 message is displayed asking to VES overwrite a memory location press F1 or to cancel saving press F2 Using the Additional Capabilities 4 13 You can recall a saved screen from memory to compare
14. MASTER RESET Press and hold F5 Press and release the power on off key Release s The test tool turns on and beeps twice The display shows the opening screen containing the model data Please note that this Master Reset automatically erases all memory data Press any key to continue 2 4 Fluke 98 Users Manual VEHICLE DATA SETUP Exercise Set the Vehicle Data for the test tool as follows 6 Cylinders 4 Cycles 12V DIS Ignition This same vehicle is used for the tutorial After powering on and after the opening screen see page 2 3 the instrument shows the VEHICLE DATA MENU VEHICLE DATA MENU CYCLES 4 BATTERY 12V IGNITION DIS Sets the test tool ror he number of e cylinders of the vehic OK SELECT NO CHANGES If no changes to the VEHICLE DATA are necessary press the F1 key F1 to confirm the selections and exit from the VEHICLE DATA MENU Or you may press This has the same effect TO MAKE A CHANGE Use the arrow keys to select the menu line to change Press to SELECT the item to change Use the arrow keys to set the variable within the pop up selection window Press to SELECT the item to change Press to confirm the displayed Vehicle Data Tutorial 2 5 BATTERY VOLTAGE TEST A multimeter DC Voltage test Exercise Measure the voltage of the battery supplied with the Demo Board Steps Press the MENU key to open the selection Me
15. The main thing is to check for the presence of a signal On most vehicles when the ECU receives a knock signal from the knock sensor it retards ignition timing until the knock disappears Specifications may vary Consult manufacturer s specifications 5 60 Fluke 98 Users Manual 15 Secondary Ignition Conventional Single Conventional Parade and DIS Single Secondary ignition patterns are useful when diagnosing ignition related malfunctions The secondary scope pattern is divided into three sections 1 Firing 2 Intermediate 3 Dwell 4 Observe these sections during diagnosis SECONDARY FIRING SECTION The firing section has a firing line and a spark line The firing line is a vertical line that represents the voltage required to overcome the gap of the spark plug The spark line is a semi horizontal line that represents the voltage required to maintain current flow across the spark gap SECONDARY INTERMEDIATE SECTION The intermediate section displays the remaining coil energy as it dissipates itself by oscillating between the primary and secondary side of the coil with the points open or transistor off SECONDARY DWELL SECTION The dwell section represents coil saturation which is the period of time the points are closed or the transistor is ON When PARADE is selected the Fluke 98 will present a parade of all the cylinders starting at the left with the spark line of the number 1 cylinder The scope will display
16. cSkV 5 2 01 ee eee o SECONDARY CONVENTIONAL Pi E mp VEHICLE PARADE FAST l ress any key to stop recording DATA UPDATE Normal test display Display during example IGNITION SECONDARY PLOT READINGS SINGLE CYLINDER Figure 4 1 Normal test display and PLOT READINGS display The plots that appear on the display are also written to memory for later examination Memory contents are preserved when the test tool is turned off See the next section Viewing the stored results from PLOT READINGS You can stop recording by pressing any key on the test tool except ON OFF When the graphical plots reach the right edge of the display the horizontal time base is doubled so the plots continue from the centre of the display to the right This process time base rescaling can repeat three times during about 16 minutes After that the plots will scroll from right to left across the screen Using the Additional Capabilities 4 5 Viewing the Stored Results from PLOT READINGS There are two ways to view the recording results from PLOT READINGS 1 While you are in PLOT READINGS recording press any key Continue the following procedure from step 4 2 In all other cases perform the following procedure Press to enter the RECORD menu Move the highlight to VIEW RECORDED SIGNAL PLOT READINGS MIN MAX TRENDPLOT FLIGHT RECORD SELECT INTERMITTENT RECORD 9
17. 0 cc ccc cnet e 3 3 Probes and Test Leads 3 3 Preparations for Automotive Measurements 3 7 MENU OVERVIEW 3 8 Navigating the Menu 3 9 Using the Function Keys 3 10 Examples of Function Key Labels 3 10 Reading Test Results on the Display 3 11 USING SENSOR FUNCTIONS 3 13 General Sensors 22x ice ete dard ey RAS ee ears 3 13 Oxygen Sensor Fe aA RA ERR EA DE 3 15 Dual Oxygen Sensor 3 16 Temperature Sensor 3 17 Knock Sensor es e wu oe eee ee e 3 18 Poteritiometer zs cee RA Ve REP 3 19 USING AIR FUEL FUNCTIONS 3 20 F el Injector 22 xum dE RR EE enean 3 20 Potentiometers sss suere xev ae RAT de 3 21 Stepper MOtOF eee ee ee tt eee epp UE VR 3 21 Oxygen Sensor Less vp ERR RI 3 22 Dual Oxygen Sensor 3 22 General Sensors 3 22 USING IGNITION FUNCTIONS 3 23 Prima ed Re ee ee Be ee eed 3 23 Secondary aod CREE ARN ae es E aac NER ned eg 3 25 Advances MER ORUM a tin
18. DIESEL DIESEL INJECTOR Result Screen 600 us Duration of 903 em INJECTION PULSE SERE the injection p gt pulse Engine speed in RPM 2 3 1 x Sms DIV DIESEL INJECTOR P VEHICLE DATA OVE E e e EJ es Using the Automotive ScopeMeter Test Tool 3 29 Advance Diesel Use this menu option to test advance on a diesel engine vehicle TDC sensor required The test is performed with the optional Diesel Probe clamped on a straight and clean part of the fuel pipe close to the injector and with the shielded test lead on INPUT B connected to the TDC sensor Do not connect the ground lead of the INPUT B test lead double grounding DIESEL X 9 Function Keys and Result Screens 898 rem AUTO 150 apvance Bow gio 2ms D1 ADVANCE e VEHICLE CURSOR RANGE RANGE DATA MOVE B MOVE A EJ e e ee es Place the cursors as indicated on the above screen 3 30 Fluke 98 Users Manual USING ELECTRICAL SYSTEM FUNCTIONS Use this menu option to test the electrical system of a vehicle MENU ELECTRICAL SYSTEM MENU SENSORS CHARGING AIR FUEL BATTERY TEST IGNITION POTENTIOMETER SOLENOID AND DIODE SCOPE VOLTAGE DROP MULTIMETER STEPPER MOTOR VEHICLE DATA INSTRUMENT SETUP Using the Automotive ScopeMeter Test Tool 3 31 Charging Use this menu option to test the charging system of a ve
19. Defines the type of secondary pickup or its attenuation factor TEMP PROBE Defines the type of temperature probe or its sensitivity in mV degree TEST LEAD Defines the type of test lead or its attenuation factor for the selected input INPUT A or B CALIBRATE TEST LEAD This menu option starts calibration of a 10 1 test lead to match the input it is connected to INPUT A or B This menu option is disabled displayed dimmed if not a 10 1 test lead is selected Regular calibration is necessary to meet specifications For details see Chapter 6 Maintenance Chapter 4 Using the Additional Capabilities USING THE RECORD FUNCTIONS 4 2 P OT READINGS 7 3 1 re irren vue iem 4 3 Viewing the Stored Results from PLOT READINGS 4 5 MIN MAX TRENDPLOT sssssssss s 4 6 Viewing the stored results from MIN MAX TRENDPLOT 4 7 INTERMITTENT RECORD eese 4 8 Viewing the stored results from INTERMITTENT RECORD 4 9 FLIGHT RECORD tg shea ake Be i a 4 10 Viewing the storeds results from FLIGHT RECORD 4 11 FREEZING PRINTING SAVING AND RECALLING SCREENS 4 12 USING CURSORS 4 14 USING THE SMOOTH FUNCTION 4 16 4 2 Fluke 98 Users Manual USING THE RECORD FUNCTIONS RECORD RECORD PLOT READINGS MIN MAX TRENDPLOT FLIGHT RECORD INTE
20. ELECTRICAL SYSTEM z SCOPE Press SELECT to confirm your selection MULTIMETER VEHICLE DATA SENSORS INSTRUMENT SETUP 3 Use the arrow keys to highlight GENERAL sensors menu SENSORS OXYGEN SENSOR DUAL OXYGEN SENSOR TEMPERATURE SENSOR KNOCK SENSOR Press SELECT to confirm your selection POTENTIOMETER GENERAL SENSORS test is activated Connection Help A message on the display asks you to connect the red test lead from INPUT A to the sensor For this measurement connect the red test lead to INPUT A the red alligator clip to TP 4 GEN SENS and the black alligator clip to the GND connection of the Demo board Press OK to confirm your connection 2 14 Fluke 98 Users Manual Result The test tool automatically scales and displays the waveform on the screen 757 gt FREQUENCY AUTO 440 v PEAK PEAK 500 x v 660 ss WIDTH v 2 20i A 500vs DIV GENERAL SENSORS e Nous CONTINUITY OHM OPEN CLOSE MOVE Turn the RPM potentiometer and watch the result on the screen Ves Press the up down and left right arrow keys changing range and watch the waveform appearance on the display 5 lt AUTO Press the AUTO RANGE key and the test tool automatically re scales the waveform for an optimal display on the screen EJ z o m Tutorial 2 15 RPM MEASUREMENT The test tool s
21. Figure 5 23 Result Display from a Digital MAF Sensor Test Mass Air Flow Sensor Digital The upper horizontal lines should reach reference voltage Peak to peak voltages should equal reference voltage The lower horizontal lines should almost reach ground Voltage drop to ground should not exceed 400 mV If the voltage drop is greater than 400 mV look for a bad ground at the sensor or ECU Signal frequency increases as the air flow through the sensor increases Automotive Applications 5 41 Mass Air Flow Meter Analog Wide open throttle maximum acceleration Idle air bypass compensating air flow into intake manifold Air flow into the intake manifold is increasing a Damping action caused by air flap movement As the air flow increases output voltage increases ST8051 Figure 5 24 Testing an Air Flow Meter Potentiometer Specifications may vary Consult manufacturer s specifications Fluke 98 Users Manual Use Potentiometer Sweep Test to test this volume Air Flow Meter see page 5 15 496 v HOLD 800 sv 8 CE Ve n ull 100ms 01 POTENTIOMETER e REPEAT TEST Figure 5 25 Result Display from a Volume Air Flow Meter Test Air Flow Meter Potentiometer N Spikes in a downward direction indicate a short to ground or an intermittent open in the resistive carbon strips
22. Inductive Pickup connected on the COM TRIGGER inputs is clamped around the spark plug wire of the first cylinder close to the spark plug j LIH PRIMARY 3 24 Fluke 98 Users Manual Function Keys and Result Screen TH 696 m 1 36 ms BURN TIME 420 v BURN VOLTAGE soor 200 496 156 480 200 100 50 8 8 2ms DIV 1800V i 360 PRIMARY CONVENTIONAL 460 PRIMARY CONVENTIONAL e VEHICLE PARADE FAST VEHICLE DATA UPDATE DATA SINGLE Press to select fast waveform updating with readings omitted not for PARADE Single cylinder Press to select between single cylinder and result screen parade test conventional systems only 2 Parade result screen SINGLE cylinder waveform MAXIMUM NL BURN TIME BURN VOLTAGE Using the Automotive ScopeMeter Test Tool 3 25 Secondary This test is done with the Secondary Pickup connected to INPUT A and for conventional systems the Inductive Pickup connected to the COM TRIGGER inputs The Secondary Pickup is clamped around the high voltage coil wire The RPM90 Inductive Pickup is clamped around the spark plug wire of the first cylinder J LL SECONDARY Function Keys and Result Screens 17 0 kv SPARK VOLTAGE 909 rrn 184 ms BURN TIME 20k 1 40 kv BURN VOLTAGE 9 0 3 RPM AUTO 3 zm 5 7 5 7
23. This test can also be used to test a knock sensor See application 14 Measurement Conditions e Connect the test tool to cylinder number one and to the Top Dead Center signal TDC Do not connect ground to the test lead on INPUT B see Figure 5 48 e Start the engine and allow the engine to idle Slowly accelerate the engine while watching the display e As electronic and mechanical timing where applicable take over an increase in ignition timing will be noted Test Tool Key Sequence we x MENU SELECT m SENSORS AIR FUEL 5 IGNITION IGNITION F5 ELECTRICAL SYSTEM SCOPE MULTIMETER VEHICLE DATA INSTRUMENT SETUP IGNITION MENU SELECT mV PRIMARY SECONDARY ADVANCE DWELL uo 2 Connect the test leads as displayed by the test tool s Connection Help and shown in Figure 5 48 The Inductive Pickup must be clamped on the spark plug wire close to the spark plug OK 5 Starts the timing advance test 6 Move cursor 2 to the positions shown in Figure 5 49 Automotive Applications SPARK PLUG SIDE Figure 5 48 Testing Advance 724 mm 27 8 Biv oov 10ms DIV ADVANCE e VEHICLE CURSOR RANGE B DATA 1 2 MOVE B MOVE A Figure 5 49 Result Display from an Advance Test 5 78 Fluke 98 Users Manual Timing Advance Fixed signal typically from the crankshaft position sensor Coil ON Coil OFF
24. 0 5 div to 1 MHz TERR 1 5 div to 5 5 MHz Sensitivity 0 2V and 2 0V TTL level compatible External Input Impedance eene 1 5 MQ 40 pF direct Delay Titre i 2 5 cn de EO EE PEARL agent 1 div Cursor Measurements Single input INPUT A cursor measurements Voltage at CURSOR 1 Voltage at CURSOR 2 Voltage difference AV between the CURSOR 1 and CURSOR 2 positions Time difference t between the CURSOR 1 and CURSOR 2 positions Dual input cursor measurements Voltage at CURSOR 1 on the INPUT A signal waveform Voltage at CURSOR 1 on the INPUT B signal waveform Voltage at CURSOR 2 on the INPUT B signal waveform Voltage at CURSOR 2 on the INPUT A signal waveform Time difference At between the CURSOR 1 and CURSOR 2 positions Meter Mode Displays numeric reading and waveform of the signal on INPUT A Measurement readout Absolute relative set zero function Appendixes 7 5 DC Voltage Ranges direct input with STL90 leads 100 mV 300 mV 1V 3V 10V 30V 100V 300V ACCURACY x ote den e pee batte ee ee 0 5 5 counts Full Scale Reading 1000 or 3000 counts Normal Mode Rejection eneeeees gt 50 dB at 50 or 60 Hz Common Mode Rejection gt 100 dB at DC 50 60 or 400 Hz AC or AC DC True RMS Voltage Ranges d
25. 12 Dot Joins hac ae Re ees Um RETE EIS 3 58 Bot Si2e tune beide A n ez END PA SM E 3 58 Duallnput Scope Le me RR Lic acu iaculi alae 3 38 Duty Oycle esce ete ates Ske ew e fexta D PEN 3 52 Dwell ai cate bebe ES pU RM IUIS 3 27 5 67 E Electrical System cs dae dne R Redux E a Regna 3 30 Environmental 7 1 Exhaust Gas 5 43 F Filter Adapter x ss 0 eco prb Me pe MOSS Up WE bs 3 4 Filter Adapters cca e Rete egeo waa VI Free RUN s saco ba ey ec RURAL EAE DI REA 3 43 3 44 Freeze vo ue lans LAM REN INA EIE Wende ee Ee 1 15 Index 1 3 FREQUENCY ae ok Ae eee deste 3 52 Fu el lnjectiOn iu nce wate mate ERREUR ERE RU SCR ARR E 5 46 Function Key Labels ti aeons dew Leser FEINER ERG 1 14 3 10 Function Key Men 000 e a ea eens 1 16 1 17 Function Keys i ara voce ee e ee S EET S 1 14 3 10 FUSES i754 fy ma eus Po ui te E ath 6 5 G Gliteh Detection iol cele ee eee ed 3 40 3 41 4 16 GIIGHES tet 1 14 Graticule eisai EE 3 12 Ground Extension Lead VI Ground bead a b EE Ioh eR 3 4 Ground Lead Extension 3 4 Ground Leads siya nies aoe
26. 5 RECORD MIN MAX TRENDPLOT RECORD INTERMITTENT RECORD RECORD FLIGHT RECORD SAVE RECALL OF SCREENS CURSOR KEY FUNCTION USING THE AUTOMOTIVE SCOPEMETER TEST TOOL INTRODUCTION rar mirida t r III MENU OVERVIEW cosi reiia seemed ae OA a USING SENSOR FUNCTIONS USING AIR FUEL FUNCTIONS USING IGNITION FUNCTIONS USING DIESEL FUNCTIONS USING ELECTRICAL SYSTEM FUNCTIONS USING SCOPE FUNCTIONS USING MULTIMETER FUNCTIONS CHANGING THE VEHICLE DATA AND INSTRUMENT SETUP USING THE ADDITIONAL CAPABILITIES USING THE RECORD FUNCTIONS INTERMITTENT RECORD 0 2 0000000005 FLIGHT RECORD Sas Aen ete keine ie FREEZING PRINTING SAVING AND RECALLING SCREENS USING CURSORS aye r e a A e E e USING THE SMOOTH FUNCTION AUTOMOTIVE APPLICATIONS SENSORS cti LUE ur ESTE etd AIB EUENE zt eese tret E te nb ns IGNITION sirana iiine Aa DATE E GE D mc en ELECTRICAL SYSTEM DIESEL kk Linn e bec eine Doh tee DRE ae USER MAINTENANCE CLEANING eie ee
27. 568 spark VOLTAGE AUTO TC 2333 sm 104 ms BURN TIME 1 88 kv BURN VOLTAGE SSN ie n ek SECONDARY CONVENTI VEHICLE PARADE Fi DATA UP siy 360 g re 2kV 2ms DIV SECONDARY DIS Di Ft ro H 8985 mmn 81 Press this key to invert the displayed ignition waveform Single cylinder result screen Press this key to select the RPM SENSitivity Conventional level see page 5 64 for more information 2 Parade result screen SINGLE cylinder waveform Conventional 3 os result screen SPARK VOLTAGE urn TIME 3 26 Fluke 98 Users Manual Advance Use this menu option to test timing advance TDC sensor required The test tool measures the time difference in degrees of crankshaft rotation between ignition and the top dead center signal The test is done with a shielded test lead on INPUT A connected to the primary side of the ignition coil For conventional systems the Inductive Pickup connected on the COM TRIGGER inputs is clamped around the spark plug wire of the first cylinder close to the spark plug In addition a shielded test lead connected on INPUT B is connected to the TDC sensor signal Do not connect the ground lead of this test lead double grounding J LL Function Keys and Result Screens 724 AUTO 27 8 apvance Biv ocv X 10ms D1 ADVANCE e Pr
28. 61 Injection Pattern Analysis 5 96 Fluke 98 Users Manual 26 Diesel Advance Measurement Diesel pump testers are used to calibrate pumps exactly to the engine s requirements They monitor pulses from the reference on the engine s flywheel The start of the delivery is monitored and timing adjustments can be made at different speeds The advance measurement with the test tool is intended to reveal problems in the timing of the start of fuel delivery compared to the TDC signal of the flywheel sensor This measurement is not meant to be an absolute and accurate diesel pump adjustment test The piezo pickup is clamped on the fuel line of the first cylinder close to the injector and connected via the blue filter probe to INPUT A See Figure 5 62 The TDC sensor signal is connected to INPUT B Do not use the ground lead of Channel B since the instrument is already grounded through the pickup adapter to the fuel line Test Tool Key Sequence O we MENU SELECT SENSORS les v AIR FUEL DIESEL FS ELECTRICAL SYSTEM SCOPE MULTIMETER VEHICLE DATA INSTRUMENT SETUP DIESEL MENU SELECT INJECTOR ADVANCE FS Connect the test leads as displayed by the test tool s Connection Help and shown in Figure 5 62 OK Starts the Diesel Advance test Position the cursors as shown in Figure 5 63 O Automotive Applications 5 97 Figure 5 62 Testing Diesel Advance
29. 6V 12V default or 24V Specifies battery voltage IGNITION CONV default DIS COP Coil On Plug or DIESEL Specifies the type of ignition system CONVentional indicates systems using a distributor DIS indicates Distributorless Ignition Systems Coil on Plug systems have an ignition coil placed directly on top of each spark plug Normally secondary ignition tests are not possible on these systems without a special adapter Fluke 98 Users Manual Changing Instrument Setup These options give access to the following menus INSTRUMENT SETUP INSTRUMENT SETUP MENU DISPLAY PRINTER OPTIONS TEST LEAD INPUT A TEST LEAD INPUT B DISPLAY OPTIONS MENU INSTRUMENT SETUP DISPLAY DISPLAY OPTIONS MENU Ri 38 CONTRAST DOT SIZE DOT JOIN CONTRAST x DOT SIZE MEDIUM DOT JOIN N TRACE PERSISTENCE OFF INVERSE VIDEO OFF This setting expressed as a percentage determines the contrast ratio between display text or graphics and the LCD background 0 is all white 100 is all black In practice the percentage will be somewhere between 35 and 80 to have a good readable display You can also change contrast by pressing the backlight key and keeping it pressed until you reach the desired contrast level This setting determines the height of the dots used to display signal waveforms SMALL Dots displayed as small as possible 1 pixel height Waveforms appear thin MED
30. Automotive ScopeMeter Test Tool 3 19 Potentiometer wens EE POTENTIOMETER Use this menu option to test the voltage output of a potentiometer type sensor The test is done with the shielded test lead on INPUT A Function Keys and Result Screen 440 v maximum HOLD 112 v nnnm CAN 180ms DIV POTENTIOMETER e REPEAT TEST RANGE Press this key This is a single shot measurement which means that the signal from the potentiometer is displayed once Turn the potentiometer slider from full counter clockwise to full clockwise or from full clockwise to full counter clockwise to get result display To get a new test result you have to press the F3 key and then turn the potentiometer again On a throttle position sensor open and close the throttle quickly This screen displays dc voltage on the potentiometer The waveform shows the dc voltage while you turn the slider MAXIMUM This is the highest voltage measured on the waveform MINIMUM This is the lowest voltage measured on the waveform 3 20 Fluke 98 Users Manual USING AIR FUEL FUNCTIONS This menu option is used to test actuators and sensors in the vehicles s air and fuel system MENU AIR FUEL MENU MENU SENSORS FUEL INJECTOR IGNITION STEPPER MOTOR ELECTRICAL SYSTEM OXYGEN SENSOR SCOPE DUAL OXYGEN SENSOR MULTIMETER GENERAL SENSORS VEHICLE DATA INSTRUMENT SETUP Fue
31. E 3V m Stand alone 50 mV div 10 V div 50 mV div 10 V div 50 mV div 10 V div With STL90 filter adapter 50 mV div 10 V div 100 mV div 10 V div 200 mV div 10 V div Table 9 Susceptibility disturbance less than 10 of full scale Frequency range E lt 0 1 E 1 E 3 25 MHz 1 GHz Stand alone N A N A N A With STL90 N A 50 mV div 100 mV div For conditions not specified in tables 7 8 and 9 a susceptibility effect of more than 1096 is possible N A Not Applicable Engine Test ignition pattern Secondary DIS Table 10 Susceptibility no visible disturbance Frequency range 10 kHz 25 MHz E lt 0 1 V m E 1 E 3 Stand alone with PM9096 101 500 V div 20 kV div 500 V div 20 kV div 500 V div 20 kV div Appendixes 7 11 Table 11 Susceptibility no visible disturbance Frequency range E lt 0 1 E 1V m E 3V m 25 MHz 1 GHz Stand alone 500 V div 20 kV div 500 V div 20 kV div 500 V div 20 kV div With PM9096 101 500 V div 20 kV div 500 V div 20 kV div 1 kV div 20 kV div Table 12 Susceptibility disturbance less than 10 of full scale Frequency range E lt 0 1 V m E 1 V m E 3 V m 25 MHz 1 GHz Stand alone N A N A N A With STL90 N A N A 500 V div N A Not Applicable Mech
32. IGNITION MULTIMETER VEHICLE DATA INSTRUMENT SETUP Information about Gi list of t i i i for the ignition system highlighted menu option Pressing the F1 key returns you to the BACK SELECT 5 last test used This is also valid after turning Select highlighted menu the power on re ra rs option IGNITION Figure 1 6 Selecting IGNITION Menu Introducing your Automotive ScopeMeter Test Tool 1 9 Subsequently follow steps and in Figure 1 7 to select SECONDARY IGNITION test IGNITION MENU PRIMARY 39 eG SECONDARY te ADVANCE Put the highlight DWELL v on SECONDARY Measures and displays secondary ignition patterns of conventional ignition systems BACK SELECT 2 Select highlighted menu le re rs 64 Fs option SECONDARY Figure 1 7 Selecting SECONDARY Ignition Test 1 10 Fluke 98 Users Manual After you have selected the test you want the display tells you what test leads you need and how to connect them See Figure 1 8 This Connection Help can be turned off See Changing Instrument Setup under OPTIONS MENU in Chapter 3 The inputs to be used are highlighted EMEN eo amp INPUT COM TRIGGER INPUT A the Secondary Pickup 0000 1 around the high voltage coil wire and connect the ground lead to ground com Clamp the R
33. If more than one screen has been saved in memory F2 F3 will allow scrolling between stored screens 2 32 Fluke 98 Users Manual CURSOR KEY FUNCTION The test tool can measure signal details by using Cursors Exercise Use the cursor s to measure the positive pulse width Steps Display the GEN SENSOR signal on the screen Refer to General Sensor Test on page 2 13 757 gt FREQUENCY AUTO 440 v PEAK PEAK 500 x v 660 WIDTH v 4 i S08ys DIV GENERAL SENSORS aay Tc OHM OPEN bse The Next Step Press to display the CURSORS function key menu CURSOR 1 CURSOR 2 560 nV a 4 00 V Ww CAN S88ys DIV CURSORS e CURSOR CURSOR Back 1 a Tutorial following screen Press to select the cursor to move CURSOR 1 3 92 CURSORS CURSOR Back OFF k 3 68 VA 660 us CURSOR 2 240 mV Press to turn the cursors on or off leave cursors on Use the arrow keys to position the cursors as shown in the Time difference between the cursors S Ops DIV 4 CURSOR 1 Cursor 1 is placed on the rising edge of the positive pulse and cursor 2 on the falling edge The lower reading in the center of the top display indicates the time difference between the cursors which is the width of the positive pulse 660 us Chapter 3 Using the Automotive ScopeMeter Test Tool INTRODUCTION 0
34. Keys and Result Screens SL o pee a LILA ILE AOI gS 6 0 104 3 0 SMS OE TEMPERATURE SENSOJ OHM gt Sms DIV TEMPERATURE SENSOR VOLT ZERO Used to measure dc voltage ona temperature sensor Used to measure the resistance of a temperature sensor sensor disconnected This screen displays the dc voltage from the temperature sensor The waveform shows the dc voltage over time This screen displays the measured resistance in ohms Q The waveform shows the resistance over time 3 18 Fluke 98 Users Manual Knock Sensor The test is performed with the shielded test lead on INPUT A After you enter the test tap the engine block close to the sensor or the sensor itself with a mallet to get a signal from the knock sensor er SENSORS KNOCK SENSOR Function Keys and Result Screen 384 v PEAK PEAK HOLD 156 FREQUENCY voltage of the knock sensor signal Frequency of the knock sensor signal i 280us DIV KNOCK SENSOR e REPEAT TEST RANGE Press this key to repeat the test The test is a single shot measurement which means that the signal from the knock sensor is displayed only once To get a new test result you have to press the F3 key and then tap the engine block or the sensor again You may have to readjust the vertical range with the arrow keys to get an optimal waveform Using the
35. Motor Scope Mode Continuous AutoRange Hands off signal probing Continuously tracks input signals from 4 Hz to 5 MHz and automatically selects the proper time base input range trigger level trigger slope and trigger source 40 ns Glitch detect Sweep speeds 1 ms per division or slower Vertical Frequency Response 3 OB DC to gt 5 MHz with Filter Adapter DC to gt 2 5 kHz ACG cou pled nt ser eA RR err eiua 10 Hz direct zee DE AC DC SEDE 5 mV to 100 V div MOdGS tete isole ttt A A B B Input Impedance 1 MQ 55 pF direct 10 MQ 4 pF with Filter Adapter Vertical ResolUtion tee deb er ence 8 bit 256 levels Pu XD 2 1 pixel 7 4 Fluke 98 Users Manual Horizontal Recurrent Single Shot Roll RANGES R c rrent itive ities A ce nee qu 20 us to 1 s div Dual input alternating sne 1 us to 20 us div Dual input chopped en tenis 50 us to 1 s div Single Shot oi dee e bere fiet eques 1 us to 200 ms div Rolls 500 ms to 60 s div Dual inp t chopped i ttd ctt et edes 20 us to 60 s div heels aes 0 1 1 pixel Record Lengths ct te ette e S erue Pes 512 samples 20 divisions Trigger felle A B or TRIGGER external Sensitivity A Or B is dee eed
36. Smooth Function Chapter 5 Automotive Applications This chapter handles applications for the test tool including descriptions test setup probes and test leads used and how to connect them the operation sequence to perform the tests the results you should see on the display and analysis of the displayed results Chapter 6 User Maintenance This chapter describes the cleaning of the Automotive ScopeMeter test tool and proper use and replacement of the battery pack Periodic probe calibration is also covered here Chapter 7 Appendixes Appendix 7A Specifications Specifies the operating characteristics of the Automotive ScopeMeter test tool Appendix 7B Parts and Test Tool Accessories Kit contents and parts ordering information Appendix 7C 8907 Power Adapter Information Gives information about the Power Adapters for different local line voltages Appendix 7D Warranty and Service Centers Warranty terms and Service Center addresses Appendix 7E Terminology Defines terms you are likely to encounter when working with the Automotive ScopeMeter test tool About This Manual V Keystrokes Keystrokes are represented in this manual with graphics of the keys For example instructs you to press the MENU key Use of Terminology Consult Appendix 7E TERMINOLOGY at the back of the manual for explanations of unfamiliar terms UNPACKING Check that the following items are included with your Automotive ScopeMeter test
37. Voltage Drop Test 5 90 Fluke 98 Users Manual 24 Voltage Tests Voltage Reference and Ground High resistance among grounds can be among the most frustrating of electrical problems They can produce bizarre symptoms that don t seem to have anything to do with the cause once you finally find it The symptoms include lights that glow dimly lights that come on when others should gauges that change when the headlights are turned on or lights that don t come on at all Voltage sources below the specified amounts can cause similar symptoms Measurement Conditions e Refer to the vehicle manufacturer s wiring diagram for additional information on pin location and circuit descriptions Test Tool Key Sequence MENU SELECT SENSORS AIR FUEL IGNITION m ELECTRICAL SYSTEM SCOPE VEHICLE DATA INSTRUMENT SETUP QD MULTIMETER MENU SELECT DHM DIODE CONT INUITY IFs RPM F5 FREQUENCY DUTY CYCLE PULSE WIDTH AMP DC AC TEMPERATURE C F p Connect the test leads as displayed by the test tool s Connection Help and shown in Figure 5 58 OK 5 Starts the Voltage test Automotive Applications 5 91 STB068 Figure 5 58 Testing Voltage D 30 Js 40 204 Sus DIV MULTIMETER VOLT AC AC DC E Figure 5 59 Result Display from a Voltage Test 5 92 Fluke 98 Users Manual DIESEL Introductio
38. activated LL E a Connection Help A message on the display asks you to connect the red test lead to INPUT A and across the item to be tested For this measurement connect the red test lead to INPUT A the red alligator clip to TP 3 and the black alligator clip to the GND connection of the Demo Board The battery is not connected to the Demo Board Press OK to confirm your connection 2 8 Fluke 98 Users Manual Result AUTO 1 65 kn adi A sor a 8 E 5ms DIV MULTIMETER OHM IE b GEN tose En Do Turn the SWEEP potentiometer and watch the value change on the display ER To Tutorial 2 9 POTENTIOMETER TEST The test tool can reveal noise or irregularities on potentiometers variable resistors Exercise Measure the noise irregularity on the Demo Board potentiometer Press the MENU key to open the selection Menu Use the arrow keys to highlight MENU SENSORS AIR FUEL IGNITION ELECTRICAL SYSTEM Press SELECT to confirm your selection SENSORS VEHICLE DATA INSTRUMENT SETUP Use the arrow keys to highlight SENSORS MENU POTENTIOMETER DU ET DUAL OXYGEN SENSOR TEMPERATURE SENSOR i KNOCK SENSOR Press SELECT to confirm your selection POTENTIOMETER is activated Connection Help A message on the display asks you to connect the test lead from INPUT A to the signal output of the po
39. active highlighted OHM OPEN CLOSE function When you press OHM becomes the active function When you press rs J CONTINUITY becomes the active function The meaning of some general function key labels are described below Pressing p a second time will toggle between OPEN and CLOSE Using the Automotive ScopeMeter Test Tool 3 11 RANGE 4T CURSOR 1 REPEAT TEST SET ZERO The lt gt icon indicates that you can use the arrow a keys to change the measurement range if RANGE mv is highlighted or move the waveform position if 3 MOVE is highlighted Press the function key to toggle between RANGE and MOVE The 4 icon indicates that you can use the arrow CAR keys to move CURSOR 1 if 1 is highlighted or move CURSOR 2 if 2 is highlighted Press the 3 function key to toggle between CURSOR 1 and 2 V Cv This label is displayed for tests that perform single measurements for example the knock sensor and the potentiometer sweep test To repeat the test press the function key then perform the required action For example the knock sensor test tap the engine block for activation When you press the related function key the present reading is used as zero reference to delta measure change For example when the present reading is 100 mV at the time you press the function key all following readings display the difference from 100 mV For example 5 mV is displayed whe
40. bent tooth on the trigger wheel Specifications may vary Consult manufacturer s specifications Automotive Applications Camshaft Position Sensor Maximum peak oe Waveform shaped by physical characteristics of trigger wheel passing the magnetic coil Tooth approaching alignment Ground reference Tooth in alignment Toothe moving away from alignment ne cii Minimum peak Specifications may vary Consult manufacturer s specifications 5 26 Fluke 98 Users Manual 6 Ride Height Position Potentiometer Variable position sensors provide a dc voltage level that changes as the arm on a variable resistor potentiometer is moved A ride height sensor is simply a variable resistor connected between the vehicle frame and the rear axle or inside the strut assembly The changing dc voltage is used as an input to the electronic control unit to adjust ride height Some manufacturers use optical or hall effect sensors Use GENERAL SENSORS to test these types of sensors Measurement Conditions e urn the key ON engine OFF Backprobe the sensor s connector or use jumper wires Disconnect the moveable arm of sensor attached to the rear axle Move the arm from stop to stop to monitor the full e urn the key OFF engine OFF Test the sensor s resistance by carefully disconnecting the sensor from its associated wiring harness Use the resistance mode to determine if there is an open or shor
41. dy Minimum voltage indicates closed throttle plate ee DC offset indicates voltage at key on throttle closed Specifications may vary Consult manufacturer s specifications 5 20 Fluke 98 Users Manual Throttle Position Sensor Switch Type Throttle at position other than closed Not necessarily wide open throttle Reference voltage Ringing may indicate worn contacts or loose throttle return springs Transitions should be straight and vertical Throttle plate closed Throttle opening and voltage transitioning To insure proper results from your test verify the type of sensor under test Switches are often used to indicate closed throttle or wide open throttle WOT Specifications may vary Consult manufacturer s specifications Automotive Applications 5 21 5 Crankshaft Camshaft Position CPS Hall Effect Magnetic and Optical Sensors Magnetic Sensors Variable Reluctance Sensors do not require a separate power connection They have two shielded connecting wires for the stationary magnet s coil Small signal voltages are induced as the teeth of a trigger wheel pass through the magnetic field of this stationary magnet and coil The trigger wheel is made of a low magnetic reluctance steel Crankshaft Position Sensor CPS Anti Lock Brake Sensor ABS and Vehicle Speed Sensor VSS are examples of Variable Reluctance Sensors Output voltage and frequency vary as vehicle
42. for probe selection and connection information e Engine RUNNING Test the ignition system under varying load conditions to verify component integrity Primary ignition modules tend to fail under high demand and temperature conditions Test Tool Key Sequence x MENU SELECT Em SENSORS AIR FUEL ELECTRICAL SYSTEM SCOPE MULTIMETER VEHICLE DATA INSTRUMENT SETUP IGNITION MENU SELECT mV PRIMARY SECONDARY ADVANCE DWELL 2 Connect the test leads as displayed by the test tool s Connection Help and shown in Figure 5 42 OK 5 Starts the dwell test 5 68 Fluke 98 Users Manual BATTERY A ST8060 Figure 5 42 Testing Dwell 396 owe AUTO 1667 rem D20V aaa a SDN DWELL ET VEHICLE DWELL DATA ms MOVE Figure 5 43 Result Display from a Dwell Test Automotive Applications 5 69 17 Distributor Triggering Magnetic Hall Effect and Optical Triggering Devices MAGNETIC DISTRIBUTOR TRIGGERING Magnetic sensors used for distributor triggering have a permanent magnet and a pole piece Fine wire is wrapped around the pole piece to form a pickup coil A non magnetic trigger wheel is attached to the distributor shaft and has as many teeth as the engine has cylinders As a tooth of the trigger wheel passes through the magnetic field built up around the pickup coil a signal is generated Magnetic or variable reluctance
43. mV degree Amperes for optional current probes Scalig hh Reve 1 mV A 10 mV A 100 mV A 1 V A 1 mV mA GOUpIING fers set pe mete ue DC AC rms or AC DC rms ibus 2000A maximum 7 6 Fluke 98 Users Manual Resistance 300 3000 30 300 MQ 30 Accuracy 3000 to 30 0 5 5 counts Accuracy ente bete RE IE 2 5 25 counts Full Scale Reading nel anai a nace 3000 counts Measurement Current 500 pA 500 uA 70 pA 7 nA 700 nA 70 nA 70 nA Open Circuit Voltage caue nie aint pa tea eere d eet er tct lt 4V Full Scale Voltage 250 mV to 3 MO 2V to 30 MQ Diode Test Open Circuit Voltage dtt e e a d e ede lt 4V Eull Sc lesvoltage 5 taken teet Mad 2 800V Measuring Current 2 oie ute RR tels 0 5 mA Measurement Modifying Functions SMOOTH etus Moving average of readings up to last 8 seconds Fast Update Fast display update for IGNITION single cylinder test FREEZE HOLD nenne Holding of last stable reading on display SET ZERO epe Zeros present reading as a reference value Record Capabilities Plot Readings Plots up to 4 readings over time simultaneously Min Max Trendplot Logs minimum maximum and average readings to memory a
44. materials handler Contact your authorized Fluke Service Center for recycling information 6 Install a new NiCad battery pack PM9086 or new alkaline C Cell batteries type KR27 50 or R14 as shown in Figure 6 1 NOTE Ensure that the NiCad battery pack charging contact is aligned in the battery compartment as shown in Figure 6 1 Use only the PM9086 NiCad battery pack Reinstall the battery cover and secure the two screws User Maintenance 6 5 Figure 6 1 Battery Replacement FUSES NOT REQUIRED Since the test tool uses electronically protected inputs no fuses are required 6 6 Fluke 98 Users Manual CALIBRATING 10 1 TEST LEADS The following procedure describes dc calibration for 10 1 test leads Other test leads need no calibration NOTE To meet full user specifications use a 10 1 test lead only with the input on which it has been calibrated 10 1 Test Lead Calibration Procedure Make sure that the test lead to be calibrated is a 10 1 test lead Select 10 1 TEST LEAD setting in the INSTRUMENT SETUP MENU for INPUT A and or INPUT B depending on which input the test lead is to be calibrated Refer to Changing Test Lead Setup in Chapter 3 Set the test tool in SCOPE gt DUAL INPUT SCOPE This enables calibration on both inputs Perform the following procedure with the DUAL INPUT SCOPE function active Press to display the menu Use the arrow keys to highlight INSTRUMENT SE
45. or damaged by accident or abnormal conditions of operation or handling Fluke warrants that software will operate substantially in accordance with its functional specifications for 90 days and that it has been properly recorded on non defective media Fluke does not warrant that software will be error free or operate without interruption Fluke authorized resellers shall extend this warranty on new and unused products to end user customers only but have no authority to extend a greater or different warranty on behalf of Fluke Warranty support is available if product is purchased through a Fluke authorized sales outlet or Buyer has paid the applicable international price Fluke reserves the right to invoice Buyer for importation costs of repair replacement parts when product purchased in one country is submitted for repair in another country Fluke s warranty obligation is limited at Fluke s option to refund of the purchase price free of charge repair or replacement of a defective product which is returned to a Fluke authorized service center within the warranty period To obtain warranty service contact your nearest Fluke authorized service center or send the product with a description of the difficulty postage and insurance prepaid FOB Destination to the nearest Fluke authorized service center Fluke assumes no risk for damage in transit Following warranty repair the product will be returned to Buyer transportation prepaid FOB Destina
46. properly and are not misleading Verify test result by physical compression test prior to mechanical repair e Interpretation of test results is easier for engines with 6 cylinders or less It becomes increasingly more difficult as the number of cylinders increase due to more compression overlap and less difference in current draw of the starter motor e Disable engine run by momentarily interrupting the fuel supply Pull the fuel pump fuse or clamp the flexible fuel pressure line e some engines holding the throttle wide open during cranking will give the best results to get an evenly distributed air intake Test Tool Key Sequence MENU SELECT SENSORS AIR FUEL IGNITION ELECTRICAL SYSTEM SCOPE MULTIMETER VEHICLE DATA INSTRUMENT SETUP E SCOPE MENU SELECT SINGLE INPUT SCOPE DUAL INPUT SCOPE IFs REL COMPRESSION UNSYNC F5 REL COMPRESSION SYNC Read the display for connection information and instructions to perform the test See the test setup in Figure 5 46 Don t forget to connect the blue Filter Adapter on INPUT A The Inductive Pickup must be clamped on the spark plug wire of the first cylinder close to the spark plug otherwise the test may not work p OK 5 Starts the Synchronized Relative Compression test 5 74 Fluke 98 Users Manual Figure 5 46 Testing Relative Compression Synchronized If accessible connection to the starter
47. speed changes In a Hall Effect Sensor a current is passed through a semiconductor that is positioned close to a varying magnetic field These variations can be caused by the turning of a crankshaft or the rotation of a distributor shaft Hall Effect Sensors are used in Crankshaft Position Sensors and Distributors Output voltage amplitude is constant frequency changes as rpm changes Optical Sensors use a rotor disk that separates LEDs from optical pickups Small openings or slits in the rotor disk allow light from the LEDs to energize the optical pickups Each time a slit aligns with the LEDs and optical pickups the pickup sends out a pulse The resulting voltage variations can then be used as a reference signal for other systems The output voltage amplitude is constant frequency changes as rpm changes A cam sensor is commonly installed in place of the ignition distributor The sensor sends electrical pulses to the coil module and gives data on camshaft and valve position 5 22 Fluke 98 Users Manual Measurement Conditions e Look for presence of a signal If there is a signal the problem is somewhere else If there is no signal look for a defective sensor or a wiring problem e you are diagnosing NO START CONDITION connect the test tool as described in the test tool s Connection Help and crank the engine e f the engine runs connect the test tool as described in the test tool s Connection Help and start the engin
48. test tool s Connection Help and shown in Figure 5 39 and Figure 5 41 OK Starts the Secondary Ignition DIS test Automotive Applications SPARK PLUG SIDE 17 0 spark VOLTAGE 909 184 ms BURN TIME 1 40 BURN VOLTAGE 20 V SKY gt gt 2ms DIY SECONDARY CONVENTIONAL VEHICLE PARADE FAST DATA UPDATE 90 5 ren 25kV 5ky 360 x SECONDARY CONVENTIONAL VEHICLE _ DATA SINGLE SINGLE Cylinder Display PARADE Display Figure 5 38 Result Display from Secondary Ignition Conventional Fluke 98 Users Manual Figure 5 39 Testing Secondary Ignition DIS Single ST amp 018 568 kv spark VOLTAGE AUTO 2333 Rem 1 04 ms BURN TIME 1 88 kv BURN voltage 2ms DIV 5 0 SECONDARY DIS VEHICLE RPM SENS FAST DATA Hi GER 00 UPDATE MOYE Use the F3 key to set the optimal RPM SENSitivity level e Set RPM SENS LOW if the RPM reading is clearly too high due to a high noise level Set RPM SENS HIGH common setting when the RPM reading gets unstable most likely under high load and high RPM conditions Figure 5 40 Result Display from Secondary Ignition DIS Single Automotive Applications 5 65 HONDA HEI System Connection Figure 5 41 HEI System Connections with the CAP90 Secondary Pickup 5 66 Fluke 98 Users Manual Secondary Conventional Si
49. the display e Use screwdriver handle and gently tap on the sensor while performing this test Loose connections in the sensor can cause momentary hesitations and flat spots Test Tool Key Sequence for a Mass Air Flow Sensor Test 7 MENU SELECT AIR FUEL IGNITION ELECTRICAL SYSTEM SCOPE MULTIMETER VEHICLE DATA INSTRUMENT SETUP 2 SENSORS MENU SELECT OXYGEN SENSOR ffs DUAL OXYGEN SENSOR F5 TEMPERATURE SENSOR KNOCK SENSOR POTENTIOMETER Connect the test leads as displayed by the test tool s Connection Help and shown in Figure 5 21 OK 4 Starts the Mass Air Flow Sensor test If necessary use the arrow keys to range Automotive Applications 5 39 ST8050 Figure 5 21 Testing an Analog MAF Sensor Hz FREQUENCY 304 v PEAK PEAK 790 x v 156 s PULSE WIDTH v mA DIY GENERAL SENSORS PT CONTINUITY OHM OPEN CLOSE MOVE Figure 5 22 Result Display from an Analog MAF Sensor Test INTERMITTENT RECORD is a powerful function to watch the signal over time This function also gives you more time to activate the MAF Sensor and then stop recording See the example for Oxygen Sensor on page 5 10 5 40 Fluke 98 Users Manual 251 kHz FREQUENCY AUTO 496 v PEAK PEAK 480 DUTY v 199 ss PULSE WIDTH v cu 188ys DIV GENERAL SENSORS e 0 CONTINUITY OHM OPEN CLOSE MOVE
50. the procedure for a conventional ignition system IGNITION CONV 2 Press this key if the Vehicle Data are correct x MENU SELECT SENSORS AIR FUEL ELECTRICAL SYSTEM SCOPE MULTIMETER VEHICLE DATA INSTRUMENT SETUP I IGNITION MENU SELECT PRIMARY SECONDARY IFs ADVANCE F5 DWELL Connect the test leads as displayed by the test tool s Connection Help and shown in Figure 5 37 The Inductive Pickup must be clamped on the spark plug wire close to the spark plug OK 6 Starts the Secondary Ignition tests Fluke 98 Users Manual If you want to test SECONDARY IGNITION SINGLE do the following PARADE Press to highlight SINGLE Connect the test leads as displayed by the test tool s Connection Help and shown in Figure 5 37 The Inductive Pickup must be clamped on the spark plug wire close to the spark plug OK Starts the SINGLE Secondary Ignition test If you want to test SECONDARY IGNITION on a DIS you have to setup the test tool as follows assumed that you are in the secondary ignition test already QO VEHICLE DATA ma VEHICLE DATA MENU SELECT 3 CYLINDERS 4 mE CYCLES 4 irs E BATTERY 12V F5 ONU A SELECT m DIS l COP DIESEL L2 F5 a OK Selects DIS as the default ignition system Repeat steps 3 and 4 to re select INGITION gt SECONDARY Connect the test leads as displayed by the
51. the shielded test lead to enable access between the wire and weather pack seal Contact is made on the shielded connector 5 7820 Three pieces red grey and black You can plug the clips onto the tip of the shielded test lead or ground lead for test or ground terminals ST7918 Overview of Optional Probes and Probe Accessories 90i 610s Current Probe Used for all tests where current is measured These tests have the function key labels AMP and CURRENT PROBE Fluke 98 Users Manual Used for oil surface air and coolant temperature measurement in C or F This probe fits in the vehicle oil dipstick hole The probe has an adjustable slider so you can adjust the length to that of the oil dipstick Used for RPM injection pattern analysis and advance tests on diesel engines with 6 mm fuel pipes This set consists of a Piezo Pickup which is clamped on the fuel pipe a Probe to Piezo Pickup Adapter a Low Pass Filter Probe to be connected to the test tool and some additional accessories not shown Also see Appendix 7B under Optional Accessories This set includes a diesel pickup clamp for 4 55 mm fuel pipe Using the Automotive ScopeMeter Test Tool Preparations for Automotive Measurements Do the following before you start automotive measurements Follow the Safety Precautions as stated in the front of this manual Prepare the car to be tested for the desired measurement e g wa
52. this measurement we use the red test lead since the Demo Board is not able to generate a High Voltage Secondary Signal Connect the red test lead to INPUT A the red alligator clip to TP 2 SEC IGN and the black alligator clip to the GND connection of the Demo board Press OK to confirm your connection 2 18 Fluke 98 Users Manual Result 5kV DATA 182 kw SPARK VOLTAGE 1270 RPM 1 92 BURN TIME 1 20 ky BURN voLrasE 20kV SECONDARY DIS VEHICLE RPM SENS FAST Mia GRE LOW UPDATE AUTO 2ms DIV e MOVE Press FAST UPDATE to increase the update speed of the screen Note that the readings will disappear Use the arrow keys to change amplitude and time base Press Auto Range to select the default setting again Tutorial 2 19 INJECTION TEST The test tool s Injection test function displays the injection signal and automatically calculates all relevant parameters such as injection time and maximum peak voltage Exercise Measure the simulated injection signal from the Demo Board Press the MENU key to open the selection Menu Use the arrow keys to highlight AIR FUEL menu SENSORS PAIRCFUEL IGNITION Press SELECT to confirm your selection SYSTEM F5 AIR FUEL MULTIMETER VEHICLE DATA INSTRUMENT SETUP Use the arrow keys to highlight FUEL AIR FUEL MENU INJECTOR PFUEL INJECTOR NN POTENTIOMETER STEPPER MOTOR OXYGEN SENS
53. voltage e g charging ripple Press to use the present reading as zero reference to measure Press to measure ac dc difference A from now on true rms voltage Figure 3 9 MULTIMETER VOLT display AUTO indicates automatic ranging Pressing sets automatic ranging on and off Using the arrow keys for ranging turns automatic ranging off and extinguishes AUTO This indicates the dc ac or ac dc reading depending on which function F1 F2 or F3 is active Voltage zero line amplitude zero Timebase range horizontal range time per division Voltage range vertical range voltage per division Using the Automotive ScopeMeter Test Tool 3 49 Testing Resistance Continuity and Diode Use this menu option to test resistance diode forward voltage and the continuity of wiring and connections The test is done with the shielded test lead on INPUT A Connect the test lead tip and test lead ground across the object resistance wire diode etc to be tested J ss OHM DIODE CONTINUITY Function Keys and Result Screens 0185 B _ 0547 al gt CLOSE MULTIMETER OHM OHMI CONTINUI OPEN CLO 3 0 MULTIMETER OHM CONTINUI Press to measure OHM EHE ns resistance MULTIMETER OHM Press to test OHM deen amass diodes Press to test continuity of wiring and connections If you select OPEN the test tool beeps when the tested con
54. voltages to the effective DC value Engine speed expressed in Revolutions Per Minute of the crankshaft Appendixes TERM DESCRIPTION RS 232 C EIA 232 D International standard for serial data communication to which the optical interface of the FLUKE 98 conforms Sample A reading taken from an electrical signal A waveform is created from a successive number of samples Sampling Rate The number of readings taken from an electrical signal every second Saturated Driver Fuel injection circuit that maintains the same voltage level throughout its on time See Injector Secondary Pickup An accessory that can be clamped on the high voltage coil wire used to measure secondary ignition patterns Shielded Test Lead A test lead that is surrounded by a conductive screen to protect the measurement signal against environmental influences such as electrical noise or radiation Spike A high voltage pulse during a short period of time sharp pulse Timebase The time defined per each horizontal division on the display Trace The displayed waveform that shows the variations of the input signal as a function of time Trigger Determines the beginning point of a waveform Trigger Level The voltage level that a waveform must reach to start display Trigger Slope The voltage direction that a waveform must have to start display A positive Slope requires the voltage to be
55. 0 Automotive Applications 5 5 Manifold Absolute Pressure Sensor Map Digital The upper horizontal Voltage transitions lines should reach should be straight reference voltage and vertical Peak to peak voltage should equal reference voltage Voltage drop to ground should not exceed 400 mV The lower horizontal lines should almost If the voltage drop is greater reach ground than 400 mV look for a bad ground at the sensor or ECU Signal frequency increases as the throttle is opened vacuum decreases As the throttle closes the frequency decreases Manifold Absolute Pressure Sensor Map Analog A high voltage level indicates high intake manifold pressure low vacuum HIGH ENGINE LOAD E LOW ENGINE LOAD As the throttle plate opens manifold pressure rises manifold vacuum lowers CENE A low voltage level indicates low intake manifold pressure high vacuum Specifications may vary Consult manufacturer s specifications 5 6 Fluke 98 Users Manual 2a Oxygen Sensor Lambda O5 Zirconia and Titania An oxygen sensor provides an output voltage that represents the amount of oxygen in the exhaust stream The output voltage is used by the control system to adjust the amount of fuel delivered to the engine The zirconia type oxygen sensor acts as a battery providing high output voltage resulting from a rich condition and low output voltage ind
56. AC ripple riding on top AC coupling blocks the DC component and passes the AC component only When you measure charging voltage with AC coupling on you will only see the AC ripple voltage RIPPLE CHARGING VOLTAGE ST8122 DC Coupling Using the Automotive ScopeMeter Test Tool INPUT B Control Functions When you are in SINGLE or DUAL INPUT SCOPE you can control the INPUT B functions as follows SCOPE dii INPUT INPUT SINGLE B SHOT TRIGGER MOVE A SCOPE INPUT B INPUT Press to Back OFF INVERT MOVE B return to the previous menu Press to turn Press to invert the INPUT B INPUT B on or off signal waveform Press to select DC or AC coupling for INPUT B u When you entered the scope function via the SINGLE INPUT SCOPE menu option INPUT B is turned off by default but you can turn it on by pressing F2 When INPUT B is turned on GLITCH detection on INPUT A is turned off 3 42 Fluke 98 Users Manual Single Shot Function Normally the scope function automatically repeats the measurements to acquire waveforms This is called the recurrent acquisition mode SINGLE SHOT allows you to perform single acquisitions to snap events that occur only once REPEAT F3 is used to start a next single acquisition When you are in SINGLE or DUAL INPUT SCOPE you can perform single shot measurements as follows SCOPE ir INPUT INPUT SINGLE RANGE A B SHOT TRIGGER MOV
57. AST 38 x DOT SIZE MEDIUM ELECTRICAL sysTen f See page 3 8 DOT JOIN ON SCOPE TRACE PERSISTENCE OFF MULTIMETER INVERSE VIDEO VEHICLE DATA VEHICLE DATA MENU ed INSTRUMENT SETUP CYLINDERS 4 anes Fen DUDEN d PRINTER EPSON BATTERY 12V BAUD RATE 1200 JEMLTION CONV PRINT GREY YES OPTIONS MENU INSTRUMENT SETUP MENI CONNECTION HELP ON LLL _Lancuace ENGLISH OPTIONS TEST LEAD INPUT TEST LEAD INPUT A TEST LEAD INPUT B CURRENT PROBE 901 610s SEC PICKUP 10000 1 TEMP PROBE TR9D TEST LEAD CALIBRATE TEST LEAD INPUT B TEST LEAD SETUP TEST LEAD 1 CALIBRATE TEST LEAD Figure 3 13 Overview of the Setup Menus Using the Automotive ScopeMeter Test Tool 3 57 Changing Vehicle Data Use this menu option to set the vehicle data to match the vehicle under test If they do not match you could get incorrect test results and may not be able to select all available tests for this vehicle Because this menu is very important for the proper use of the test tool it also appears at power on as the start up display VEHICLE DATA VEHICLE DATA MENU CYLINDERS 4 CYCLES 74 BATTERY 12V IGNITION CONV CYLINDERS 1 2 3 4 default 5 6 or 8 Specifies the number of cylinders on the vehicle under test CYCLES 2 or 4 default Specifies a two or four stroke engine BATTERY
58. CE OR REPAIR CAPACITORS INSIDE MAY STILL BE CHARGED EVEN IF THE TEST TOOL HAS BEEN DISCONNECTED FROM ALL VOLTAGE SOURCES CLEANING Clean the test tool with a damp cloth and a mild detergent Do not use abrasives solvents or alcohol Do not use any type of paper to clean the display screen This will cause scratches and diminish the transparency of the plastic screen Use only a soft cloth with a mild detergent KEEPING BATTERIES IN OPTIMAL CONDITION When new the batteries typically provide 4 hours of use To keep batteries in optimal condition do the following Always operate the test tool on batteries until a blinking E appears in the top right of the display This indicates that the battery level is too low and the batteries need to be recharged CAUTION Frequent charging of the batteries when they are not completely empty can cause a memory effect This means that the capacity of the NiCad batteries decrease causing a decrease in the operating time of the test tool User Maintenance 6 3 You can revitalize a NiCad battery pack with too low capacity as follows Qo Ensure that the test tool is battery operated Power Adapter disconnected Press the power on key to turn the test tool on OK OK Press this key twice to enter the main MENU Press to select SENSORS SELECT es J SELECT Press to select GENERAL SENSORS F5 If Connection Help information is displayed press F1 Pre
59. Calculated variable signal from ignition or timing module Timing advance calculated from fixed pulse width signal top trace to variable calculated signal bottom trace Specifications may vary Consult manufacturer s specifications Automotive Applications 5 79 ELECTRICAL SYSTEM 20 Battery Test Charging system problems often come to you as a no start complaint The battery will have discharged and the starter will not crank the engine The first step is to test the battery and charge it if necessary Measuring System Voltage Bleed the surface charge from the battery by turning on the headlights for a minute Now turn the lights off and measure the voltage across the battery terminals When possible individual cell specific gravity should be checked with a hydrometer A load test should be done to indicate battery performance under load Voltage tests only tell the state of charge not the battery condition Measurement Conditions e Connect the test tool to the vehicle s battery as described on the test tool s help screen e Crank the engine while watching the instrument s display Test Tool Key Sequence SELECT SENSORS AIR FUEL IGNITION SCOPE MULTIMETER VEHICLE DATA INSTRUMENT SETUP p 3 ELECTRICAL SYSTEM MENU SELECT a CHARGING irs POTENTIOMETER F5 SOLENOID AND DIODE VOLTAGE DROP STEPPER MOTOR Read the display for connect
60. Clip Grey 5322 290 40472 Appendixes PART 4 mm Banana Adapter Red ORDERING NUMBER 5322 263 50242 4 mm Banana Adapter Grey 5322 263 50239 4 mm Banana Adapter Black 5322 263 50241 2 mm Adapter Red 5322 263 50238 2 mm Adapter Grey 5322 263 50236 2 mm Adapter Black 5322 263 50237 Back Probe Pin Red 5322 264 20104 Back Probe Pin Grey 5322 264 20105 Back Probe Pin Black 5322 264 20103 Users Manual English 4822 872 00786 Users Manual French Users Manual Spanish 4822 872 00787 4822 872 00788 Shielded Test Lead Set Consists of the following e Two Shielded Test Leads 1 5 m 60 inch Red and Grey e Two 2 mm Adapters Red and Grey e Two 4 Banana Adapters Red and Grey e Three Backprobe Pins Red Grey and Black e Two Ground Leads for the Shielded Test Leads 25 cm 10 inch e Two AC85A Alligator Clips Black STL90 All parts for the STL90 Shielded Test Lead Set are included in the Standard Kit Contents and are listed above with ordering numbers 7 16 Fluke 98 Users Manual Optional Accessories Consists of the following e 10 1 Low Pass Filter Probe plug Lead Red e Piezo Pickup 6 mm PART ORDERING NUMBER AC DC Current Probe 90i 610s Temperature Probe TR90 Diesel Probe Set DPS90 e Probe Tip Adapter with 2 mm tip e Probe Tip Adapter with 4 mm b
61. E A E e es EJ es Presto SCOPE SINGLE SHOT en single shot mode sso and return to the previous menu Tet e e Ea es Press to repeat a single shot acquisition BACK Using the Automotive ScopeMeter Test Tool 3 43 Trigger Control Functions TRIGGER is a set of conditions that determine whether and when acquisitions start The following will determine the trigger conditions Select INPUT A B or TRIGGER as the TRIGGER SOURCE input Use TRIGGERED or FREE RUNning acquisitions Select trigger to occur on a positive or negative SLOPE of the signal SET the trigger LEVEL If you change the trigger level the AUTO RANGE function is turned off so that vertical and horizontal timebase ranging and trigger level are set to manual control Also see Making an Easy Setup on page 3 39 When you are in SINGLE or DUAL INPUT SCOPE you can control the trigger functions as follows SCOPE 9 INPUT INPUT SINGLE A SHOT TRIGGER E A E e es EJ les J SCOPE TRIGGER TRIGGERED SLOPE SOURCE Back BTRIG se the arrow keys to e the trigger level 2 m pa F5 Press to select triggered or free running acquisitions Press to select the trigger source rs 4 Press to select the trigger slope 3 44 Fluke 98 Users Manual BTRIGGERED versus FREE RUNning acquisitions If you select FREE RUN default the test tool always performs acquisitions i
62. E MOVE Figure 5 20 Result Display from an Anti Lock Wheel Speed Sensor Test 5 36 Fluke 98 Users Manual Anti Lock Wheel Speed Sensor Analysis If the amplitude is low look for an excessive air gap between the trigger wheel and the pickup If the amplitude wavers look for a bent axle If one of the oscillations looks distorded look for a bent or damaged tooth on the trigger wheel Improper air gap from a tone wheel or missing teeth on a wheel speed sensor will produce an erratic signal Peak to peak values should be the same and the signal should look symmetrical Specifications may vary Consult manufacturer s specifications Automotive Applications 5 37 AIR FUEL 9 Air Flow Sensors Analog Digital and Potentiometer Sensors ANALOG MASS AIR FLOW SENSOR MAF This mass air flow sensor uses a heated metal foil sensing element to measure air flow entering the intake manifold The sensing element is heated to a temperature of about 170 F 77 C above the temperature of incoming air As air flows over the sensing element it cools the element causing resistance to drop This causes a corresponding increase in current flow which causes supply voltage to decrease This signal is seen by the ECU as a change in voltage drop an increase in air flow causes an increase in voltage drop and is used as an indication of air flow DIGITAL MASS AIR FLOW SENSOR MAF This type of air flow sen
63. ELECTRICAL SYSTEM MENU SELECT BATTERY TEST les POTENT IOMETER F5 SOLENOID AND DIODE VOLTAGE DROP STEPPER MOTOR Connect the test leads as displayed by the test tool s Connection Help and shown in Figure 5 52 OK 5 Starts the charging dc voltage test Use the F2 key to measure the charging ripple voltage Use the F3 key to measure the charging current with a Current Clamp Use the F4 key to measure the charging ripple current with a Current Clamp When using a Current Clamp you must set it to zero before using it for measurements 5 84 Fluke 98 Users Manual STB065 Figure 5 52 Testing Charging System Output Voltage 40 fe 30V 30V Bus DIV CHARGING e UM VOLT AMP AMP RIPPLE CHARGE RIPPLE Figure 5 53 Result Display from Charging System Voltage Test Automotive Applications 5 85 22 Solenoid and Clamping Diode Test When an electromagnetically controlled device is de energized a voltage spike can be induced by the collapse of the magnetic field Clamping or suppression diodes are used to filter out these inductive spikes Horn circuits relays blower motors air conditioning clutches and some injectors are examples of devices that use diodes for this purpose A faulty diode can cause induced noise often detectable over a car s audio system These noise spikes are seen as large overshoots when the waveform transitions from one level to anoth
64. Ee md ec d iridis 3 8 Min Max 1 3 4 2 4 6 Mixture Control 5 5 52 Multimeter Functions 3 47 N Navigating the Menu 3 9 NiCad Battery V 1 6 1 11 6 2 NOISE ss uer IG pee adhe Le Bt ot dale date EINER Au rg 1 14 Noise Pick p sun eae le eee ee a tee 1 21 Noise Bejectior sis sU deta te E Re a a BG 1 11 Numerical Results d 2 sere we ERE Ree das vata 1 17 O On Line oi euet ha bere Bestel eee ea i et ell 1 16 Optional 7 16 Optional Probes eR ake de Ree AERE ER 3 5 Options Menu oo ER im VPE Ie RI pee iE DIE 3 58 3 61 Oxygen SENSO xis EE YA wa Lem Rau re abunde 5 6 P Parade Result Screen isori Pee he ee A ahh ee EPIS 3 24 3 25 Parts and Accessories A 0 eee eens 7 14 Performance Characteristics 7 1 Piezo PICKUP ope su oae EA A Ae rece pus 3 6 Plot Readings c se ee e 1 3 4 2 Power Adapter Battery V 1 6 1 11 1 12 7 17 POWERSOUICESS ciuitas Lu id boton eke 1 11 Powering the Test 1 6 1 11 2 3 Primary Ighition con
65. Fluke 98 Users Manual Environmental Temperature Operating esi hie oa te teet te e oct te ta ted 0 C to 50 C 20 C to 70 C Humidity Operating doeet its 20 C to 30 90 RH noncondensing 30 C to 50 C 70 RH noncondensing ano e e i este REB EN eae ate 95 RH Altitude Operating s eto atti ah eL ctor dn 3 km 10 000ft Storage ste UR er OR BER ern RES 12 km 40 000ft Shock and Vibration eese per MIL T 28800 for Class 3 Electro Magnetic Interference meets the following specifications see also DECLARATION OF CONFORMITY on page X The Fluke 98 series II including standard accessories conforms with the EEC Directive 89 336 for EMI immunity as defined by IEC 801 3 with the addition of the following tables 1 to 12 Scope Mode Table 1 Susceptibility no visible disturbance Frequency range E lt 0 1 V m E 1 V m E 3V m 10 kHz 25 MHz Stand alone with 5 mV div 100 V div 5 mV div 100 V div 5 mV div 100 V div STL90 Table 2 Susceptibility no visible disturbance Frequency range E lt 0 1 E 1V m E 3V m 25 MHz 1 GHz Stand alone 5 mV div 100 V div 5 mV div 100 V div 5 mV div 100 V div With STL90 5 mV div 100 V div 200 mV div 100 V div 500 mV div 100 V div Appendixes Table 3 Susceptibility distu
66. IUM Dots displayed 2 pixel height default Waveforms appear medium thick LARGE Dots displayed 3 pixel height maximum Waveforms appear thick Can be set On or Off default is On Think of a waveform as being a sequence of single dots see Figure 3 14 When DOT JOIN is On the dots are connected together as a solid line Using the Automotive ScopeMeter Test Tool 3 59 DOT JOIN Off DOT JOIN On Figure 3 14 TRACE PERSISTENCE Can be set On or Off default is Off When set On INVERSE VIDEO this keeps the signal waveform on the screen longer so it is easier to see any fast detail on the signal It looks as if the waveform is refreshed at a slower rate Can be set On or Off default is Off Normally when set Off you see black text and graphics on a green background display When you set INVERSE VIDEO On you see green text and graphics on a black background display 3 60 Fluke 98 Users Manual PRINTER MENU PRINTER PRINTER MENU PRINTER EPSON BAUD RATE 1200 34 PRINT GREY YES See Tip PRINTER Defines the type of printer connected to the test tool BAUD RATE Defines the communication speed of the optical link between the test tool and the printer This must correspond with the settings of the printer PRINT GREY Can be set to Yes or No Yes is default When set to Yes grey parts as visible on screen are printed black When
67. Inductive Pickup TRIGGER as single input Used in SCOPE functions to start trigger acquisitions from an external source 1 20 Fluke 98 Users Manual COM as single input Used for safety grounding when the Inductive Pickup or the Secondary Pickup is connected to the ignition system A WARNING TO AVOID ELECTRICAL SHOCK CONNECT THE COM INPUT OF THE TEST TOOL TO VEHICLE GROUND BEFORE CLAMPING THE STANDARD SUPPLIED CAPACITIVE SECONDARY PICKUP OR THE INDUCTIVE PICKUP ON THE IGNITION WIRES THIS GROUND CONNECTION IS REQUIRED IN ADDITION TO THE NORMAL MEASUREMENT GROUND CONNECTIONS For other tests the COM input should not be connected to engine ground when the probes have their own ground connection at the probe end See the following GROUNDING GUIDELINES Introducing your Automotive ScopeMeter Test Tool 1 21 GROUNDING GUIDELINES Problems with Incorrect Grounding Incorrect grounding can cause various problems 1 You can create a ground loop when you use two ground leads connected to different ground potentials This can cause excessive current through the grounding leads INPUT A Aol 4 3 Figure 1 16 Incorrect Grounding Ground Loop by Double Grounding on Different Grounds INPUT A E n 7 M PN Sass 71 Figure 1 17 Correct Grounding Shield of Test Lead Connected to Ground 2 Excessive noise shown on t
68. L SENSORS OXYGEN SENSOR DUAL OXYGEN SENSOR TEMPERATURE SENSOR KNOCK SENSOR POTENTIOMETER SELECT SELECT Connect the test leads as displayed by the test tool s Connection Help and shown in Figure 5 44 OK Figure 5 44 Testing a Hall Effect Distributor Triggering System Starts the distributor triggering test 578061 Automotive Applications 5 71 127 Hz FREQUENCY AUTO 472 wv PEAK PEAK 420 gt DUTY v 306 ms PULSE WIDTH v 2 aa x 2ms DIV GENERAL SENSORS e ER on GTM Figure 5 45 Result Display from a Hall Effect Distributor Triggering Test Primary Distributor Triggering Hall Effect The upper horizontal Voltage transitions lines should reach should be straight reference voltage and vertical Peak to peak voltages should equal reference voltage The lower horizontal lines should almost reach ground The duty cycle of the signal remains fixed determined by the spacing between shutter blades Frequency of the signal increases as the speed of the engine increases Specifications may vary Consult manufacturer s specifications 5 72 Fluke 98 Users Manual Primary Distributor Triggering Magnetic Maximum peak levels should be equal to _ each other If one is shorter than the other look for a chipped or bent tooth on the trigger wheel The waveform signature
69. MEASUREMENT RESULT PROBES AND TEST LEADS KEYPAD TO OPERATE THE INSTRUMENT CONNECTION FOR PRINTER OR COMPUTER CONNECTION FOR AC POWER ADAPTER OR AUTOMOTIVE ADAPTER BATTERY COMPARTMENT WITH NiCAD BATTERY PACK PROTECTIVE HOLSTER ST8037 Figure 1 1 A look at the Test Tool Introducing your Automotive ScopeMeter Test Tool 1 5 Using the Tilt Stand RELEASE HERE Q eB sT7909 Figure 1 2 Tilt Stand Accessories Overview x3 M o o7 Figure 1 3 Accessories Overview Alternative country dependent delivery 1 6 Fluke 98 Users Manual Powering the Test Tool Perform the following steps to power the test tool see Figure 1 4 Make sure the Power Adapter is suitable for the local power line voltage see Appendix 7C Take the Power Adapter and connect the line power plug to the lines Connect the low voltage plug to the test tool as shown in Figure 1 4 This supplies the automotive test tool and charges the internal rechargeable NiCad Battery Pack At delivery the NiCad batteries may be discharged and must be charged for 16 hours to charge them completely 2 Press the key Power on off to turn the test tool on Power Adapter low voltage plug Power Adapter _ line plug Figure 1 4 Powering the Test Tool Introducing
70. MOTIVE SCOPEMETER TEST TOOL IN ENVIRONMENTS WHERE EXPLOSIVE PETROLEUM VAPOR MAY COLLECT SUCH AS IN BELOW GROUND PITS OR WITHIN 18 INCHES 45cm OF THE FLOOR 4 This instrument contains Nickel Cadmium batteries Do not Ge mix with the solid waste stream Spent batteries should be ses disposed of by a qualified recycler or hazardous materials Ni Cd handler Contact your authorized Fluke Service Center for recycling information X Fluke 98 Users Manual DECLARATION OF CONFORMITY for FLUKE 98 Automotive ScopeMeter Series II Manufacturer Fluke Industrial B V Lelyweg 1 7602 EA Almelo The Netherlands Statement of Conformity Based on test results using appropriate standards the product is in conformity with Electromagnetic Compatibility Directive 89 336 EEC Low Voltage Directive 73 23 EEC Sample tests Standards used EN 61010 1 1993 Safety Requirements for Electrical Equipment for Measurement Control and Laboratory Use EN 50081 1 1992 Electromagnetic Compatibility Generic Emission Standard EN55022 and EN60555 2 EN 50082 1 1992 Electromagnetic Compatibility Generic Immunity Standard IEC801 2 3 4 5 The tests have been performed in a typical configuration This Conformity is indicated by the symbol CE i e Conformit europ enne Chapter 1 Introducing your Automotive ScopeMeter Test Tool INTRODUCTION 2 5m Reb RR 1 3 QUICK TOUR Lada Ra ea 1 4 Look at the T
71. Multimeter RPM function displays the incoming signal either through INPUT A or the TRIGGER input and calculates the RPM value Exercise Measure the RPM of the GEN SENS Signal on the Demo board Use different Divide factors number of times the signal is present in 720 1 crankshaft revolution 360 Steps menu Press the MENU key to open the selection Menu Use the arrow keys to highlight MENU MULTIMETER E J IGNITION ELECTRICAL SYSTEM SCOPE Press SELECT to confirm your selection B MULTIMETER INSTRUMENT SETUP Use the arrow keys to highlight RPM MULTIMETER MENU VOLT DC AC e OHM DIODE CONTINUITY Press SELECT to confirm your selection FREQUENCY i i i PULSE WIDTH the RPM function is activated PULSE UID TEMPERATURE C F u 5 Connection Help A message on the display asks you to connect the RPM90 Inductive Pickup Skip making this connection Press OK to enter the RPM measurement Press to highlight INPUT A as the input for the RPM signal GS F1 2 16 Fluke 98 Users Manual Connection Help A message on the display asks you to connect the red test lead from INPUT A to any RPM signal For this measurement we use the General Sensor signal of the Demo board Connect the red test lead to INPUT A the red alligator clip to TP 4 GEN SENS and the black alligator clip to the GND connection of the Demo board Press OK to c
72. NTINUITY OHM OPEN CLOSE MOVE Figure 5 34 Result Display from an Idle Air Control Valve Test 5 56 Fluke 98 Users Manual Idle Air Compensation Valves MIC ORC DIC dU Idle Air Bypass waveforms may have unique shapes such as these and have a saw curved appearance due to inductance reactance Specifications may vary Consult manufacturer s specifications Automotive Applications 5 57 IGNITION 14 Knock Sensor Piezo Crystal Burst Pattern To optimize performance and fuel economy ignition timing should be adjusted so that combustion occurs during a specific number of degrees of crankshaft rotation beginning at TDC of the power stroke If ignition occurs later less power is produced by that cylinder and if it occurs too soon detonation will occur Most knock sensors contain a piezoelectric crystal that is screwed into the engine block This is a special type of crystal that generates a voltage when it is subjected to mechanical stress The crystal produces an electrical signal that has a unique signature based on the knock condition The output voltage is used by the ECU to adjust ignition timing to optimize engine performance Measurement Conditions Out Of Circuit Test Sensor Disconnected e Disconnect the knock sensor from the vehicle s wiring harness Connect the test tool to the sensor e Use a small mallet and gently tap the engine block near the sensor to generate a signal In C
73. ONTINUITY GENERAL SENSORS FREQUENCY DUTY CYCLE PULSE WIDTH Note 2 For DIESEL this menu is as follows AMP DC AC TEMPERATURE C F Figure 3 3 Automotive Test Functions Overview Using the Automotive ScopeMeter Test Tool 3 9 Navigating the Menu The navigation sequence is similar for all tests Therefore the following navigation example which shows how to select the secondary ignition test can help you learn navigate a menu Perform the following sequence step by step STEP KEY NUMBER PRESS DESCRIPTION DISPLAY O Press to display the MENU menu menu PSENSORS AIR FUEL IGNITION ELECTRICAL SYSTEM SCOPE MULTIMETER VEHICLE DATA INSTRUMENT SETUP Press to move the MENU 1 1 SENSORS highlight to IGNITION IGNITION ELECTRICAL SYSTEM SCOPE MULTIMETER VEHICLE DATA INSTRUMENT SETUP p SELECT Press to select IGNITIUN MENU ee IGNITION MENU F5 ADVANCE DWELL i Press to move the IGNITION MENU highlight to SECONDARY ADVANCE DWELL 5 SELECT Select SECONDARY irs from the IGNITION F5 MENU Before the selected test starts running information about the po INPUTA COM TRIGGER required connections INPUT Clamp the Secondary gt 1 aroun higl IS displayed voltase coil wire and connect OK the ground lead to ground If you were performing Sround tne mus F1 an actual ignitio
74. OR Press SELECT to confirm your selection DUAL OXYGEN SENSOR FUEL INJECTOR test is activated GENERAL SENSORS Connection Help A message on the display asks you to connect the red test lead from INPUT A to the signal wire of the injector and to connect the ground lead to ground For this measurement connect the red test lead to INPUT A the red alligator clip to TP 1 INJECTION and the black alligator clip to the GND connection of the Demo board Press OK to confirm your connection Fluke 98 Users Manual 2 20 Result 520 ms INJECTION PULSE 320 v maximum 1004 60 49 20 8 22900 ms TV FUEL INJECTOR e VEHICLE DATA MOVE Do potentiometer CD Change the injection time by changing the INJECTION Use the arrow keys to change the timebase and amplitude Tutorial 2 21 RECORD PLOT READINGS The test tool s PLOT READINGS function can record incoming signals by plotting up to FOUR different parameters over time Exercise Record the General Sensor signal frequency range from the Demo Board Steps menu Press the MENU key to open the selection Menu Use the arrow keys to highlight MULTIMETER EE IGNITION ELECTRICAL SYSTEM IFs Press SELECT to confirm your selection ES MULTIMETER Use the arrow keys to highlight MEIICIERIENI y FREQUENCY CONTINUITY RPH m Press SELECT to co
75. PLOT is activated If VIEW RECORDED SIGNAL there is old record data in memory press F1 YES to continue record memory will be lost fe Present contents of the Are you sure Result caua FUEL INJECTOR Present reading 076 ns 100 max soohrat 24 EEEE E R E 056 ave o00hro1 34 020 ooonroo 25 Max Scale 18 8ms L t i 8 0ms Min Scale 15s 60s Press any key to stop recording Do lt Change frequency by changing the INJECTION potentiometer p and watch the display gt Gy To stop the Recording press any key Tutorial 2 25 RECORD INTERMITTENT RECORD The test tool s INTERMITTENT RECORD function records up to 1280 divisions 128 screens of continuous signal data Exercise Record the Ignition signal on the Demo Board over a long period of time Refer to Vehicle Data on page 2 4 Steps menu Press the MENU key to open the selection Menu Use the arrow keys to highlight IGNITION menu SENSORS AIR FUEL Press SELECT to confirm your selection ELECTRICAL SYSTEM IGNITION MULTIMETER VEHICLE DATA INSTRUMENT SETUP Use the arrow keys to highlight IGNITION MENU DD SECONDARY ADVANCE DWELL irs Press SELECT to confirm your selection F5 SECONDARY ignition test is activated Connection Help A message on the display asks you to connect the Secondary Pick
76. PM90 Inductive TRIGGER Pickup around the spark plus wire of cylinder 1 and connect the COM input to ground OK ch ch ch ch d Figure 1 8 Connection Information During Test Selection Press to start the test For this example it is not necessary to make the actual connections The test tool now runs the secondary ignition parade test Note that PARADE is highlighted on the bottom display Press the information key to display information about the present test being performed Introducing your Automotive ScopeMeter Test Tool 1 11 POWER SOURCES You can power the automotive test tool from any of the following sources refer to Figure 1 9 e Internal Battery Pack PM9086 011 1 This is a rechargeable NiCad Battery Pack already installed e Four Cell batteries can be used in place of the NiCad Battery Pack These batteries can be used in 9087 002 combination with of the following adapters but charging is disabled e Power Adapter 8907 2 Ny The Power Adapter Battery Jo ome Charger powers the test tool from Figure 1 9 Powering the Test Tool a standard ac outlet and charges the installed PM9086 011 NiCad Battery Pack The test tool can be used during battery charging Verify that your local line voltage is appropriate before using the Power Adapter Battery Charger to power the test tool e Charging Adapter PM9087 002 optional This adapte
77. Press to select F5 When you enter VIEW RECORDED SIGNAL the display shows the readings that were on the display at the time you stopped recording A vertical cursor appears at the location where these readings are valid that is at the end of the record See Figure 4 2 Use the left right arrow SECONDARY SINGLE VIEW keys to move the cursor over the plots to read the sample values at the cursor location PRINT PETS T 65ms BURN TIME Press this key to print e F4 the record to a 1 298 connected printer This is only possible via START Imin the optionally available thd CURSOR 1 RS232 cable PRINT 0 BACK Press this key to exit F1 F2 F3 F4 F5 from this display to return to the normal test Figure 4 2 Display shown in display VIEW RECORDED SIGNAL Function 4 6 Fluke 98 Users Manual MIN MAX TRENDPLOT This function records the reading displayed at the top and keeps track of the maximum minimum and average value The present reading remains displayed at the top while the recorded values are listed below with their corresponding time stamps As the average value is calculated over all readings from the beginning of recording up to and including the most recent reading its time stamp indicates the complete recording time A graphical plot of the actual reading is displayed see Figure 4 3 Do the following to start the MIN MAX TRENDPLOT recording function S
78. RMITTENT RECORD VIEW RECORDED SIGNAL The group of functions in the RECORD MENU can help you to find faults that occur over time PLOT READINGS and MIN MAX TRENDPLOT are very suitable to find faults in slowly changing processes such as faults due to current change INTERMITTENT RECORD is a fast recording function that continuously records without interruptions FLIGHT RECORD records up to 40 successive screen snapshots in memory and is suitable to find irregularities in repetitive signal patterns The recording functions store the results in memory VIEW RECORDED SIGNAL allows you to examine the results later on Do the following to start a recording function Select and start the test you want to record 2 Press to enter the RECORD menu RECORD PLOT READINGS MIN MAX TRENDPLOT FLIGHT RECORD Press to move the highlight to the INTERMITTENT RECORD w A desired recording function VIEW RECORDED SIGNAL SELECT Press to select the highlighted recording function If the desired recording function is not possible for the selected test the corresponding menu is shown dimmed see the above figure Using the Additional Capabilities 4 3 PLOT READINGS This function allows you to see how different readings influence each other Information is presented as a graphical plot of each reading For example you can display graphical plots of the PEAK PEAK voltage and the DUTY CYCLE to see how the
79. RUMENT SETUP VEHICLE DATA MENU SELECT CYLINDERS 4 CYCLES 4 BATTERY 12V IGNITION RU A SELECT DIS COP DIESEL Return to the main MENU p gp OK 1 o d Proceed as follows to select the Diesel Injector test MENU SELECT SENSORS AIR FUEL ELECTRICAL SYSTEM SCOPE MULTIMETER VEHICLE DATA INSTRUMENT SETUP DIESEL MENU SELECT mV 65 ADVANCE V F5 Connect the test leads as displayed by the test tool s Connection Help and shown in Figure 5 60 OK 9 Starts the Diesel Injector test Automotive Applications Figure 5 60 Testing Diesel Injection ST8069 Analysis of Injection Pattern at Idle Speed When the injector opening pressure is The delivery valve opens and a pressure wave proceeds toward the injector 344 877 rem The injection pumps plunger moves in the supply direction and thus generating a high pressure in the pressure gallery VEHICLE DATA DIESEL INJECTOR reached gt 100Bar or 1 470 psi the needle valve overcomes its needle spring force and lifts INJECTION PULSE The injection process ends the delivery valve closes and the pressure in the line drops This quick drop causes the nozzle to close instantly preventing the nozzle from opening again and preventing backflow of combustion gases 2ms DIV 4 MOVE Figure 5
80. S is simply a variable resistor connected to the throttle shaft The changing dc voltage is used as an input to the electronic control module Switched Type of Sensor Some manufacturers use switches to determine the position of the throttle The signal to the ECU from this switch tells the ECU to control the idle speed switch closed throttle closed or not to control the idle speed switch open because the driver has moved the throttle linkage from the closed position Another switch closes to tell the ECU that the throttle is wide open The linear throttle position sensor is mounted to the throttle shaft and has two movable contacts traveling along the same axis as the throttle valve One is used for the throttle opening angle and the other for the closed throttle signal Insure that the correct wires are monitored to determine a malfunctioning sensor Testing the DC Voltage from the Throttle Position Sensor This is an in circuit test nothing disconnected on the Throttle Position Sensor to measure the dc voltage delivered Measurement Conditions for the Throttle Position Sensor Voltage Test e urn the key ON engine OFF Sweep the throttle to the wide open position and then to the closed position again or vice versa Automotive Applications Test Tool Key Sequence SENSORS 7 AIR FUEL IGNITION ELECTRICAL SYSTEM SCOPE MULTIMETER VEHICLE DATA INSTRUMENT SETUP SENSORS MENU GENERAL SEN
81. SORS OXYGEN SENSOR DUAL OXYGEN SENSOR TEMPERATURE SENSOR KNOCK SENSOR and shown in Figure 5 9 OK e SELECT SELECT Connect the test leads as displayed by the test tool s Connection Help Starts the potentiometer sweep test To obtain the waveform shown in Figure 5 10 Potentiometer type sensor or the waveform shown in Figure 5 11 Switched type sensor sweep the sensor arm from closed to full open and back to closed To obtain a continuous pattern while on a road test simply increase the time base to 500 ms or greater Figure 5 9 Testing a Throttle Position Sensor In circuit Voltage Test 5 18 Fluke 98 Users Manual 472 v maximum HOLD 680 my minimum Ziv 180ms DIV POTENTIOMETER e REPEAT TEST Figure 5 10 Result Display of a Voltage Test on a Potentiometer Type Throttle Position Sensor 148 v maximum HOLD 200 m minimum 180ms DIV POTENT I OMETER e REPEAT TEST Figure 5 11 Result Display of a Voltage Test on a Switched Type Throttle Position Sensor Automotive Applications 5 19 Throttle Position Sensor Potentiometer Defective TPS Pattern IN Spikes in a downward direction indicate a short to ground or an intermittent open in the resistive carbon strips Peak voltage indicates wide open throttle WOT Voltage decrease identifies enleanment throttle plate closing Voltage increase identifies enrichment
82. TOOL SAFETY The instrument described in this manual is designed to be used only by qualified personnel Safety Precautions To use this instrument safely it is essential that operating and servicing personnel follow both generally accepted safety procedures and the safety precautions specified in this manual Safety VII Specific warning and caution statements where they apply will be found throughout the manual Where necessary the warning and caution statements and or symbols are marked on the instrument A CAUTION identifies conditions and actions that may damage the Automotive ScopeMeter test tool A WARNING IDENTIFIES CONDITIONS AND ACTIONS THAT POSE HAZARD S TO THE USER International symbols used are explained below Caution see explanation in AN manual DOUBLE INSULATION Protection Class Common input symbol Recycling symbol equipotentiality 2 a DC Direct Current Earth ground terminal AC Alternating Current c BNC signal input symbol T The terms Isolated or Electrically floating are used in this manual to indicate a measurement in which the Automotive ScopeMeter test tool COM common also called ground is connected to a voltage different from earth ground The term Grounded is used in this manual to indicate a measurement in which the Automotive ScopeMeter test tool COM common is connected to an earth ground potential The Automotive ScopeMe
83. TUP Press to select the INSTRUMENT SETUP MENU Use the arrow keys to highlight TEST LEAD INPUT A or TEST LEAD INPUT B B s 95 n m sd m 4 Press this key to select TEST LEAD SETUP for INPUT A or INPUT B Check that TEST LEAD displayed in the present menu is set to 10 1 Otherwise set it to 10 1 ul 4 Use the arrow keys to highlight CALIBRATE TEST LEAD 3 lt oO O0 O9 Press to select the CALIBRATE TEST LEAD procedure Tee User Maintenance 6 7 Make the connections as displayed by the test tool See Figure 6 2 Read the instructions displayed to complete the calibration procedure la FE 7 Ag INPUT A INPUT A INPUT B Test Lead Calibration Setup Test Lead Calibration Setup Figure 6 2 Test Lead Calibration Setup APPENDIX 7A APPENDIX 7B APPENDIX 7C APPENDIX 7D APPENDIX 7E Chapter 7 Appendixes 7 1 Parts Accessories 7 14 PM8907 Information 7 17 Warranty and Service Centers 7 19 Terminology 7 25 Appendixes 7 1 APPENDIX 7A Specifications INTRODUCTION Performance Characteristics FLUKE guarantees the properties expressed in numerical values with the stated tolerance Specified non tolerance numerical values indicate those that could be nominally expected from the mean of a range of ide
84. The test tool can store and recall screens and instrument setups instantly Exercise Save the Hall Effect sensor output signal and recall it Steps Connect the test tool to display the simulated Hall Effect sensor signal Refer to General Sensors test on page 2 13 for menu selection and connection information The test tool automatically scales and displays the waveform on the screen 757 Hz FREQUENCY AUTO 440 v PEAK PEAK 500 x v 660 ws Purse WIDTH v 2 w _ _ _ S80ys7DIV GENERAL SENSORS P OHM OPEN CLOSE The Next Step Press to freeze the signal on the screen HOLD is displayed on inis the top right 757 Hz FREQUENCY HOLD 448 wv PEAK PEAK 495 x DUTY CYCLE v 660 WIDTH v 1 S88ys DIV SAVE RECALL SAVE CLEAR BACK SCREEN RECALL PRINT MEMORY D Press SAVE SCREEN to save the current screen into memory N Press OK to confirm the saving of the signal in the memory Disconnect the signal and press F1 Back The signal will disappear from the screen o ui 2 d aaa Press to display the SAVE RECALL menu Press to recall the stored sensor signal 757 gt FREQUENCY HOLD 448 wv PEAK PEAK 495 x DUTY CYCLE v 660 us Purse WIDTH v 2 TA 0 50 nDECA I The screen from memory 1 is displayed OK Press to recall the displayed screen NOTE
85. UNNING after you have connected the test tool to the mixture control solenoid by using a back probe or jumper wire Some vehicles have a pigtail harness near the solenoid for ease of connection Insure that the engine management system is under fuel control pulse width varying and that the engine is in closed loop e Create a large vacuum leak brake booster and watch the signal change as the ECU enriches the mixture to compensate for the vacuum leak e Close the choke or use propane enrichment to enrich the mixture Watch the signal change as the ECU compensates for the lack of oxygen at the oxygen sensor Test Tool Key Sequence x MENU SELECT ay SENSORS IFs IGNITION F5 ELECTRICAL SYSTEM SCOPE MULTIMETER VEHICLE DATA INSTRUMENT SETUP 2 AIR FUEL MENU SELECT em FUEL INJECTOR POTENTIQMETER irs STEPPER MOTOR F5 OXYGEN SENSOR DUAL DXYGEN SENSOR Connect the test leads as displayed by the test tool s Connection Help and shown in Figure 5 31 OK 5 Starts the Mixture Control test Automotive Applications 5 53 Figure 5 31 Testing a Mixture Control Solenoid 100 Hz FREQUENCY AUTO 120 v PEAK PEAK 730 x cvce v ms PULSE WIDTH v 71M 20ms DIV BENERAL SENSORS EN Uu CONTINUITY OHM OPEN CLOSE MOVE Figure 5 32 Result Display from a Mixture Control Solenoid Test 5 54 Fluke 98 Users Manual 13 Idle Air Co
86. Users Manual CAP 90 Secondary Pickup with HEI plates Used for secondary ignition tests Ground lead connected to engine ground Used as trigger synchronization for conventional ignition systems with distributor and for RPM measurements on spark leads Connected to COM and TRIGGER inputs Used to connect the test tool COM input to the engine ground This is necessary for safety reasons on all IGNITION tests The ground lead has 4 mm shrouded banana plugs at each end The ground lead extension has a 4 mm banana jack at one end and a 4 mm banana plug at the other end Used for oxygen sensor tests to provide 10 MQ 3 5pF input impedance This low pass Filter Adapter eliminates noise over 4 kHz One side of the adapter is connected to INPUT A or B the other side is used to connect the shielded test lead Using the Automotive ScopeMeter Test Tool 3 5 4 mm Banana Adapters Three pieces red grey and black You can plug the 4 mm banana adapter on the tip of the shielded test lead for use as a exposed test tip or for connection to 4 mm breakout box jacks 2 mm Adapters Three pieces red grey and black You can plug the 2 mm adapter onto the tip 3x of the shielded test lead to enable access to narrow contacts 2 mm or wider or to connect to 2 mm breakout box jacks ST7819 Back Probe Pins Three pieces red grey and black You can plug the spring loaded back probe pins onto the tip of
87. YSTEM COPE lt Press SELECT to confirm your selection 5 AIR FUEL VEHICLE DATA INSTRUMENT SETUP 20 Use the arrow keys to highlight OXYGEN atR FUEL MENU FUEL INJECTOR SENSOR POTENTIOMETER STEPPER MOTOR OXYGEN SENSOR 1 i DUAL OXYGEN SENSOR Press SELECT to confirm your selection PESE a SENSORS B 5 OXYGEN SENSOR test is activated Connection Help A message on the display asks you to connect the blue filter adapter and the red test lead from INPUT A to the oxygen sensor For this measurement connect the red test lead to the blue filter adapter on INPUT A the red alligator clip to TP 5 OXYGEN SENS and the black alligator clip to the GND of the Demo Board Press OK to confirm your connection 2 12 Fluke 98 Users Manual Result 940 mv AUTO 559 mv average 120 sv minimum 25061 2000 4500 o DTV OXYGEN SENSOR iur Do Change the RPM potentiometer and watch the OXYGEN SENS signal behavior on the display LS Tutorial 2 13 GENERAL SENSORS TEST The test tool s General Sensors function optimally displays any signal varying in amplitude and frequency Exercise Measure the simulated Hall Effect sensor output signal from the Demo Board GEN SENS signal Press the MENU key to open the selection o e o Menu Use the arrow keys to highlight MENU V SENSORS AIR FUEL IGNIT ION
88. a 1 14
89. ages should be at least 600 mV or greater with an average of 450 mV Minimum peak voltages should reach at least 200 mV or less Specifications may vary Consult manufacturer s specifications Automotive Applications 5 9 Oxygen Sensor test with RECORD PLOT READINGS The PLOT READINGS function allows you to record the minimum maximum and average voltage readings over time This is useful for tracking a coated sensor or one that has an intermittent ground on the exhaust manifold Test Tool Key Sequence for an Oxygen Sensor Test with Flight Record Start the OXYGEN SENSOR test as described above 2 Press to display the RECORD menu x RECORD SELECT PPLOT READINGS o E MIN TRENDPLOT les FLIGHT RECORD F5 INTERMITTENT RECORD VIEW RECORDED SIGNAL If there is still record data in memory that may be cleared perform step 3 to start recording YES 3 Press start recording OXYGEN SENSOR soon s NO Mae 440mV un C 20 64 mV MINIMUM 50 8mV imin Press any key to stop recording 4 Press any key to stop recording 5 Use the arrow keys to move the cursor to the desired position to read the MAXIMUM AVERAGE and MINIMUM values at that position You can turn the test tool off and read this record later via the RECORD DISPLAY RECORDED SIGNAL function See Chapter 4 for more information 5 10 Fluke 98 User
90. anana e Two Alligator Clips Red and Black e Retractable Hook Tip with Ground Probe to Piezo Pickup Adapter No replacement part 5322 264 20087 5322 264 20096 AC85 5322 210 70136 L0 8L68lNd 5322 263 50244 5322 263 50245 Diesel Extension Set Consists of the following e Piezo Pickup 4 55 mm e Probe to Piezo Pickup Adapter DPE90 No replacement part 5322 263 50245 Optically isolated RS 232 Adapter Cable for connection to a printer or a computer PM9080 001 FlukeView 98 Software Optically isolated RS 232 Adapter Cable for connection to the computer is included SW98W 011 Isolated 12V Charging Adapter fits automotive cigarette lighter socket PM9087 002 Isolated 24V Charging Adapter fits automotive cigarette lighter socket PM9087 021 Appendixes 7 17 APPENDIX 7C PM8907 Information Your ScopeMeter test tool is powered by a PM8907 Power Adapter Battery Charger The version you use depends on the configuration ordered N WARNING TO AVOID ELECTRICAL SHOCK CONNECT THE PM8907 POWER ADAPTER TO THE AC OUTLET BEFORE CONNECTION TO THE TEST TOOL The following versions are used with the test tool PM8907 801 Universal European line plug 230V 10 PM8907 803 North American line plug 120V 10 PM8907 804 United Kingdom line plug 240V 10 PM8907 806 Japanese line plug 100V 10 PM8907 807 Australian line plug 240V 10 PM8907 808 North America
91. and Hold Peak and Hold injector circuits actually use two circuits to energize the injectors Both circuits come on to energize the injector this sends a high initial current to the injector allowing it to open quickly Then after the injector opens one circuit releases leaving the second circuit to hold the injector open through the duration of its on time This circuit adds a resistance to the circuit to reduce the current flow through the injector When the second circuit shuts off the injector closes ending the injector s on time To measure on time look for the falling edge of the on time pulse and the second rising edge which indicates where the second circuit shut off Throttle Body Injection TBI The throttle body assembly was designed to replace the carburetor The pulse width represents the amount of time the injector is energized or ON The pulse width is varied by the ECU in response to changes in engine operation and driving conditions Conventional Saturated Switch The injector driver transistor applies constant current to the injector Some injectors use a resistor to limit the current flow others have a high internal resistance These injectors have a single rising edge Aut omotive Applications 5 47 Pul se Width Modulated Injectors Pulse modulated injectors have a high initial current applied to energize the inje ctor quickly Then after the injector is open the ground begins pulsing on a
92. anical Size exclusive holster 60 x 130m x 260 mm 2 4 x 5 1 x 10 2 inches Size inclusive holster 65 x 140 x 275 mm 2 5 x 5 5 x 10 8 inches Weight exclusive holster ssseeenmen 1 5 kg 3 3 Ibs Weight inclusive holster eeeeen 1 8 kg 4 0 Ibs Safety Designed to Category Ill per IEC 1010 approved for 600V measurements on industrial power distribution systems Overload protection on INPUT A or INPUT 300 Vrms Overload protection on EXTernal input 300 Vrms Surge Protection s ue ER eR Qiii 4 kV per IEC 664 and ANSI IEEE C62 41 test method Maximum Isolation to 600 Vrms from any terminal Optical Optically Isolated to 600 Vrms NOTE The input impedance of INPUT A or INPUT B drops significantly when the voltage on the input exceeds 400 Vrms 7 12 Fluke 98 Users Manual Accessory Information Standard Accessories included with your Automotive ScopeMeter Test Tool Shielded Test Leads STL90 Gece ocio o Ere DEN RE Rue 0 to 200 Mhz Test lead capacitance 240 pF Voltage to ground uideri ree d de De eer rat P P e n den 600V Maximum input voltage esseesesss
93. ata and start recording 3 lt n m e m Oo 4 1 B 171 Hz FREQUENCY GENERAL SENSORS 4 08 v PEAK PEAK 507 x DUTY CYCLE v 296 ms PULSE WIDTH v 4 2ms DIV 201 017 GENERAL SENSORS im de Goyrmurmy Range l ress any ey stop recording Normal test display Display during INTERMITTENT example GENERAL SENSORS RECORD 1 Figure 4 4 Normal test display and INTERMITTENT RECORD display 1 For slow timebase settings the display will be blank for a certain time Using the Additional Capabilities 4 9 The time base setting during INTERMITTENT RECORD is 20 ms per division or slower time base gt 20 ms division If the current time base is faster than 20 ms per division INTERMITTENT RECORD records at 20 ms per division Viewing the stored results from INTERMITTENT RECORD Do the following to view the results from INTERMITTENT RECORD If you are in the INTERMITTENT RECORD mode press any key to stop recording and continue the following procedure from step 4 In all other cases perform the next procedure through Use the same procedure as used for Viewing the stored results from PLOT READINGS to enter the INTERMITTENT RECORD function steps 1 through 3 a 2 1 SEARCH these keys to browse through the recorded Fo Fs screens to search for the desi
94. connected For the voltage test F1 key this is a single shot measurement which means that the signal is displayed only once To get a new test result press the F3 key and reapply the signal from the stepper motor 3 22 Fluke 98 Users Manual O PEAK PEAK Indicates the difference in voltage between the lowest and the highest value of the displayed waveform J LIO EE OXYGEN SENSOR This menu option performs the same as OXYGEN SENSOR in the SENSORS MENU Refer to the description of this menu option on page 3 15 Dual Oxygen Sensor F L DUAL OXYGEN SENSOR This menu option performs the same as DUAL OXYGEN SENSOR in the SENSORS MENU Refer to the description of this menu option on page 3 16 General Sensors Lus GENERAL SENSORS This menu option performs the same as GENERAL SENSORS in the SENSORS MENU Refer to the description of this menu option on page 3 13 Using the Automotive ScopeMeter Test Tool 3 23 USING IGNITION FUNCTIONS Use this menu option to test the vehicle s ignition system MENU IGNITION MENU gt SENSORS PRIMARY AIR FUEL SECONDARY ADVANCE ELECTRICAL SYSTEM DWELL SCOPE MULTIMETER VEHICLE DATA INSTRUMENT SETUP Primary This test is done with the shielded test lead on INPUT A connected to the primary side of the ignition system In addition for conventional systems the
95. d aes 3 26 Dwell inc Pies xe Rmo RR EEG rper ice P RE eT 3 27 USING DIESEL FUNCTIONS 3 28 Diesel injector eens 3 28 Advance Diesel 3 29 3 2 Fluke 98 Users Manual USING ELECTRICAL SYSTEM FUNCTIONS 3 30 Charging a it cR s RR UR igo adus 3 31 Battery Testi isse b ieri pen ok ee E REY 3 32 Potentiometer 3 33 Solenoid and Diode 3 34 Voltage Drop seil MR et ee le eee ee 3 35 Stepper M tor AE re eae er mead 3 36 USING SCOPE FUNCTIONS 3 37 When Using the Scope 3 37 Using Single and Dual Input Scope 3 38 Making an Easy Setup 3 39 INPUT A Control Functions 3 40 INPUT B Control Functions 3 41 Single Shot Function 3 42 Trigger Control Functions 3 43 Testing Relative Compression 3 45 USING MULTIMETER FUNCTIONS 3 47 Making Connections 3 47 Testing Volt DCAC 2 Leni ELLA Up dence dud tas 3 48 Testing Resistance Continuity and Diode
96. d the lead to the side nearer the battery negative terminal or ground Current must be flowing for the instrument to register the voltage drop found The Voltage Drop test is helpful on components and connections both on the feed side and ground side except solenoids which read battery voltage if you measure across them when the engine is being cranked Voltage drops should not exceed the following 200 mV Wire or cable 300 mV Switch 100 mV Ground 0 mV to lt 50 mV Sensor Connections 0 0V Connections Measurement Conditions e Current must be flowing for the instrument to register the voltage drop found e he positive lead should be connected to the side of the device nearer the positive terminal of battery Test Tool Key Sequence MENU SELECT SENSORS AIR FUEL IGNITION SCOPE MULTIMETER VEHICLE DATA INSTRUMENT SETUP ejr 5 ry ELECTRICAL SYSTEM MENU SELECT a CHARGING BATTERY TEST IFs POTENTIOMETER F5 SOLENOID AND DIODE VOLTAGE DROP STEPPER MOTOR Connect the test leads as displayed by the test tool s Connection Help and shown in Figure 5 56 OK Starts the Voltage Drop test Automotive Applications Figure 5 56 Testing Voltage Drop AUTO 080 w 000 max 300 290 max min 8 0m 455 60s 7480 0mV VOLTAGE DROP REPERT TEST 4 RANGE Figure 5 57 Result Display from a
97. ded test lead connected via the Filter Adapter on INPUT A The test tool automatically adapts for different types of sensors J EE OXYGEN SENSOR Result Screen 93B se werk AUTO Maximum value of the displayed waveform 566 mv AVERAGE 128 my Average value of the displayed waveform Minimum value of the displayed waveform 200mV 5 z gt 15 017 OXYGEN SENSOR Use the arrow keys for ranging Press to return to the default range 3 16 Fluke 98 Users Manual Dual Oxygen Sensor This menu option is used to test the efficiency of the catalytic converter by comparing the signals from the oxygen sensor before and after the converter Both STL90 probes are used each connected via a blue filter adapter on the test tool s input A and B The red probe is connected to the leading sensor the sensor before the catalytic converter and the grey probe to the trailing sensor the sensor after the catalytic converter J EE DUAL OXYGEN SENSOR Result Screen 373 mv AVERAGE A AUTO 421 sv AVERAGE B58Omv sev DUAL OXYGEN SENSOR RANGE MOVE B MOVE A Using the Automotive ScopeMeter Test Tool 3 17 Temperature Sensor This menu option tests the dc voltage or resistance from a temperature sensor The test is done with the shielded test lead on INPUT A EM TEMPERATURE SENSOR Function
98. e it always displays the signals on the input If TRIGGERED is selected a trigger is always needed to start an acquisition TRIGGER SLOPE If you select T trigger occurs at a rising positive edge of the signal If you select L trigger occurs at a falling negative edge of the signal TRIGGER SOURCE If you select TRIGGER SOURCE A default acquisitions start when the signal on INPUT A fulfills the selected trigger conditions SLOPE LEVEL If you select TRIGGER SOURCE B the previous rule is valid for INPUT B INPUT B must be ON If you select TRIGGER SOURCE TRIG the previous rule is valid for the signal on the TRIGGER input TRIGGER LEVEL SET LEVEL This function allows you to set the level the signal must cross to trigger acquisitions Normally after you enter the scope function the AUTO RANGE function automatically sets and maintains an optimal trigger level as the signal changes Move the trigger level icon or icon if trigger slope is set to negative to the desired level ww NOTE If you selected TRIG as the trigger source you can select only 2V or 0 2V as trigger level Using the Automotive ScopeMeter Test Tool 3 45 Testing Relative Compression This test is used to compare compression of cylinders during cranking Engine start is disabled The principle of this test is based on battery voltage drop or current change during cranking Use unsynchronized UNSYNC RELATIVE COMPRESSION if you wan
99. e Inductive Pickup on the COM TRIGGER input This selection is not Automatic ranging is on to track the RPM signal 2 8417 MULTIMETER RPM INI IGGER PUT A 4 1 n 720 NORMAL RPM You can use the arrow AUTO keys for manual ranging wy RPM signal waveform 20ms DIV Press to use the presentRPM as zero reference to measure SET ZERO displayed for diesel RPM change A Press to decrease Press to increase These keys are used to set the number of test pulses to the test tool per 720 two crank shaft revolutions NOTE You can use the arrow keys to change sensitivity and time base Press to restore the default value settings stored in VEHICLE DATA Fluke 98 Users Manual Testing Frequency Duty Cycle or Pulse Width enw J MULTIMETER Function Keys and Result Screens FREQUENCY gt DUTY CYCLE Eus Ez AL 4494 0500 3 0V MULTIMETER FREQL Hz m Press to test frequency ven umsmn AUTO 3 0 3 0 MULTIMETER DUTY He vms Press to test duty cycle 1 0111 7 S 0s DIV MULTIMETER PULSE WIDTH He 5 ZERO Press to test pulse width 2 1 You can also enter this test via DUTY CYCLE in MULTIMETER MENU 2 You can also enter this test via PULSE WIDTH in MULTIMETER MENU For more details about the function key
100. e Run the test at idle and at higher rom values Test Tool Key Sequence MENU SELECT RUF M IGNITION ELECTRICAL SYSTEM SCOPE MULTIMETER VEHICLE DATA INSTRUMENT SETUP SENSORS MENU SELECT OXYGEN SENSOR ffs DUAL OXYGEN SENSOR F5 TEMPERATURE SENSOR KNOCK SENSOR POTENTIOMETER Connect the test leads as displayed by the test tool s Connection Help and shown in Figure 5 12 OK 2 Starts the Crankshaft Position Sensor test Automotive Applications 5 23 597 gt FREQUENCY 656 v PEAK PEAK 940 v 158 ms PULSE WIDTH v cw _ a GENERAL SENSORS usan CONTINUITY OHM OPEN CLOSE MOVE Figure 5 13 Result Display from a Magnetic Crankshaft Position Sensor Test 5 24 Fluke 98 Users Manual Crankshaft Position Sensor Hall Effect The upper horizontal Voltage transitions lines should reach should be straight reference voltage and vertical 7 Peak to peak voltages should equal reference 1 voltage The lower horizontal lines should almost reach ground Crankshaft Position Sensor Magnetic Maximum peak levels should be equal to each other If one is shorter than another look for a chipped or bent ween tooth on the trigger wheel These two pulses identify Maximum peak levels should be cylinder 1 TDC equal to each other If one is shorter than another look for a chipped or
101. e User Manual of the Current Probe Using the Automotive ScopeMeter Test Tool 3 55 Testing Temperature Use this menu option to test temperature with the optional Temperature Probe or a probe that has a temperature sensitivity of 1 mV per degree Celsius or Fahrenheit CMM TEMPERATURE F Function Keys and Result Screen 0886 MULTIMETER TEMPERATURE Press to select between oF Press to use the present measuring degrees temperature reading as Celsius and degrees zero reference to measure Fahrenheit temperature change A Figure 3 12 MULTIMETER TEMPERATURE Display SET ZERO In TEST LEAD SETUP you can select TR90 Temperature Probe or a thermocouple probe with sensitivity 1 mV C or 1 mV F Use the F1 key to set the corresponding temperature unit C or F Fluke 98 Users Manual CHANGING SETUP THE VEHICLE DATA AND INSTRUMENT There are two groups of setups in the main menu see Figure 3 13 VEHICLE DATA Use this menu option to enter the correct vehicle data such as the number of cylinders on the vehicle under test INSTRUMENT SETUP Use this menu option to set the following e Optimal settings for display Correct settings for hard copy to a printer Language for menus and help text Connection Help turned ON or OFF Correct probe and test lead data Setup Overview MENU SENSORS DISPLAY OPTIONS MEN CONTR
102. e ek LEE ties 1 15 2 29 Scope FUNCIONS e eae nick ete RAM EEUU MR RAD RT RUE 3 37 Secondary Ignition 5 60 Secondary Pickup 0 cece eee eee eee 3 3 3 62 Service lt 7 19 Set Zero ede Be ee dae Bae T PA DOM 3 48 Shielded Test VI 1 11 3 3 Signal Noise eo ee eae ey Gad ee oa 1 11 Single Cylinder Result Screen 3 24 3 25 Single lhput Scope ena wees ari a RR em Re aces See ad 3 38 Single Shot 3 42 s be tants fas ek atta due sities Genet apd Song acted cn that ee Sete ad nate 4 16 Solenoid and Clamping 3 34 Solenoid 2 adn BAe Be prd 5 85 Spark Voltage ue eg wee Epor S eben MO bes bam 3 25 Specifications zx s acere den t eestor had Sea RS cede aioe 7 1 SpIKeS sehr roe x CPP ESPERA Arne HEUTE SUE ee 1 14 Standard Kit 7 14 Symbols za Heian ERE ORE ERE e a p VII T TDG Sensor lee I4 ue SA Ga EG 3 26 3 29 Temperatures ise Hae te SO MA EAA eee 3 55 5 13 1 6 Fluke 98 Users Manual Temperature Probe
103. ect input on the test tool and to the vehicle to be tested application information Chapter 5 gives you additional Fluke 98 Users Manual MENU OVERVIEW Figure 3 3 shows an overview of available test functions from the MENU key The menu choices represent categories of applications that are listed in sub menus as shown in the following figure I SENSORS MENU GENERAL SENSORS OXYGEN SENSOR DUAL OXYGEN SENSOR TEMPERATURE SENSOR KNOCK SENSOR Note 1 For DIESEL this menu is as follows AIR FUEL MENU DIESEL INJECTOR DIESEL MENU INJECTOR ADVANCE DIESEL can be selected via the VEHICLE DATA menu see Changing Vehicle Data on page 3 57 MENU POTENTIOMETER SENSORS AIR FUEL AIR FUEL MENU See IGNITION FUEL INJECTOR Note 1 ELECTRICAL SYSTEM POTENTIOMETER SCOPE STEPPER MOTOR MULTIMETER OXYGEN SENSOR VEHICLE DATA L See the section DUAL OXYGEN SENSOR GENERAL SENSORS INSTRUMENT SETUP CHANGING THE VEHICLE DATA IGNITION MENU See AND INSTRUMENT PRIMARY Note 2 SETUP on SECONDARY ade 3 56 ADVANCE pag DWELL ELECTRICAL SYSTEM MENU CHARGING BATTERY TEST POTENTIOMETER SOLENOID AND DIODE VOLTAGE DROP STEPPER MOTOR SCOPE MENU SINGLE INPUT SCOPE DUAL INPUT SCOPE REL COMPRESSION UNSYNC REL COMPRESSION SYNC MULTIMETER MENU VOLT DC AC POTENTIOMETER STEPPER MITUR PERLE C
104. ed XEM eet t KEEPING BATTERIES IN OPTIMAL CONDITION REPLACING AND DISPOSING OF BATTERIES FUSES NOT REQUIRED CALIBRATING 10 1 5 5 APPENDIXES APPENDIX 7A 5 APPENDIX 7B Parts and Accessories APPENDIX 7C PM8907 1 APPENDIX 7D Warranty and Service Centers APPENDIX 7E Terminology INDEX IV Fluke 98 Users Manual About This Manual Chapter 1 Introducing Your Automotive ScopeMeter test tool This chapter introduces Automotive ScopeMeter test tool features and capabilities It starts with a Quick Tour to give you a quick introduction to the Automotive ScopeMeter test tool Chapter 2 Tutorial This chapter provides many demonstrations with use of the Demo Board to help you understand how the Automotive ScopeMeter test tool works Chapter 3 Using the Automotive ScopeMeter Test Tool This chapter describes how to use the main functions of the Automotive ScopeMeter test tool This includes the Automotive Test Functions the Scope and the Multimeter Chapter 4 Using the Additional Capabilities This chapter describes the Automotive ScopeMeter test tool capabilities beyond the normal measurement functions such as Recording Saving and Recalling Screens Cursors and the
105. ed in conjunction with the vehicle s ignition system 4 ELECTRICAL SYSTEM Measurements on devices used in the vehicle s electrical system NOTES This chapter provides many typical automotive tests These tests are designed to help you learn how to use the Automotive ScopeMeter test tool These tests DO NOT REPLACE test procedures that apply to particular vehicles Therefore consult your vehicle manufacturer s service manual to use correct test procedures The application examples given in this chapter represent often used applications with typical specifications Some vehicle manufacturers use other systems with different specifications and require test methods different from those mentioned in this application chapter Automotive Applications 5 3 SENSORS 1 Manifold Absolute Pressure MAP The manifold absolute pressure sensor provides an electrical signal to the ECU that represents engine load This data in the form of a frequency modulated square wave or voltage level depending on the manufacturer is used by the computer to alter the fuel mixture and other outputs High pressure occurs when the engine is under a heavy load and low pressure high intake vacuum occurs when there is very little load A bad MAP sensor can affect the air fuel ratio when the engine accelerates and decelerates It serves the same basic function as a power valve in a carburetor It may also have some effect on ignition timing and other computer o
106. eed sensor or use a breakout box Place the transmission in drive and slowly accelerate the drive wheels To test the non drive wheels use the procedure outlined above in Key OFF Engine OFF Fluke 98 Users Manual Test Tool Key Sequence mV e t mV v MENU AIR FUEL IGNITION ELECTRICAL SYSTEM SCOPE MULTIMETER VEHICLE DATA INSTRUMENT SETUP SENSORS MENU GENERAL SENSORS OXYGEN SENSOR DUAL OXYGEN SENSOR TEMPERATURE SENSOR KNOCK SENSOR POTENTIOMETER SELECT SELECT Connect the test leads as displayed by the test tool s Connection Help and shown in Figure 5 19 OK O y Starts the ABS Wheel Speed Sensor test See Figure 5 19 and 5 20 Use the RECORD PLOT READINGS function to monitor the sensor over time and find intermittents that can cause the MIL Malfunction Indicator Lamp to light Press the RECORD button Select PLOT READINGS and press F5 to Select GENERAL SENSORS 30 0 4 2 168 Hz FREQUENCY 150 Hz 1 v 1 16 V x 60 0 50 0 X DUTY CYCLE v 3 18ms 3 lIms PULSE T s 3min Press any key to stop recording OK Automotive Applications IANI 20 gt ST8049 Figure 5 19 FREQUENCY PEAK PEAK CYCLE v PULSE WIDTH 71000mv Sms D1 GENERAL SENSORS is Ms CONTINUITY G OHM OPEN CLOS
107. eeeeenenneennenenneen nennen nennen 300V Maximum CUETert tire RERO a cea MG d eee 3A Maximum cable resistance sss 100 Temperature ndo deterret ec cep Tee c e 0 50 operating 40 70 non operating Inductive Trigger Pickup RPM90 Maximum 16 000 RPM Q 4 stroke 4 cylinder 8 000 RPM Q 2 stroke 1 cylinder crm M 5 of reading Current range of measured 0 to 10 amperes Cable length chests em adie dian Hee erede 3 meters 10 feet Suitable spark plug lead 10 mm maximum Capacitive Secondary Pickup PM9096 101 Europe only iate Rete cerit abe 10000 1 Cable length 3 ciet c ce er dence eren 3 meters 10 feet Suitable spark plug lead 6 to 8 mm Capacitive Secondary Pickup CAP90 2 tients tc en ence oa hte ER ptt ds 10000 1 Gable lengthi ii eR RERUM e PORE 1 5 meter 5 feet Suitable spark plug lead gt 6mm CLAMP Width fe Ake eene 25 4 mm 1 inch Clamp heat resistance gt 110 C 230 F HEl adapters fot Eie du
108. eform This can be caused by a momentary disruption in the tested circuit Ground Controlled Circuit A circuit that energizes by applying ground voltage is already supplied Hall Effect Sensor Inductance A semiconductor moving relative to a magnetic field creating a variable voltage output Used to determine position The signal caused by the sudden change of a magnetic field For example when you turn off the current through a solenoid a voltage spike is generated across the solenoid Intermittent Irregular a condition that happens with no apparent or predictable pattern Invert To change to the opposite polarity Puts the waveform display upside down Lambda Sensor Oxygen sensor or sensor Liquid Crystal Display A display that uses liquid crystals to display waveforms and text on its screen LCD Liquid Crystal Display Master Reset Menu Resets the test tool to the factory Default Set up You can do this by turning power on while pressing the F5 function key A list of choices for selecting a test a function or a setting 7 24 Fluke 98 Users Manual TERM DESCRIPTION Noise Extraneous electrical signal that can interfere with other electrical signals The noise can disturb the function of the signal when it exceeds a certain electrical level NTC A resistor that has a Negative Temperature Coefficient resistance decreases as te
109. elect and start the test you want to record RECORD Press to enter the RECORD menu Move the highlight to MIN MAX ER TRENDPLOT HIR REX TRENDPDT E FLIGHT RECORD INTERMITTENT RECORD Press to select MIN MAX TRENDPLOT VIEW RECORDED SIGNAL If there is still existing record data in memory press to preserve this data or press to overwrite this data and start recording n m r m Oo 4 e QOO ul 1226 ooohroo 00 1200 ave 21 1037 2 41 1 22 Bs un 193 AUTO 30V edad adil ad 13 6 v m x 30s E 120s 9 00 V MULTIMETER VOLT SET any key to stop recording AC DC ZERO Normal test display Display during MIN MAX example MULTIMETER VOLT TRENDPLOT Figure 4 3 Normal test display and MIN MAX TRENDPLOT display The graphical plot is displayed in the same way as PLOT READINGS except in this function time base rescaling does not stop after 16 minutes Recording stops when you press any key on the Automotive ScopeMeter test tool Using the Additional Capabilities 4 7 Viewing the stored results from MIN MAX TRENDPLOT Use the same procedure as used for Viewing the stored results from PLOT READINGS to enter the VIEW RECORDED SIGNAL function When you enter this function the display shows the same information that was shown when you stopped rec
110. en until the engine is placed under load For this reason a road test or dyno may be necessary Sensor CAUTION Perform the following tests on a cold engine to prevent personal injury e Key ON Engine OFF Back probe the position sensor on top of the EGR valve and carefully with a cold engine raise the EGR from its seat position If there is limited or no access to the EGR diaphragm running the vehicle under a load may be necessary to move the EGR valve e Key OFF Engine OFF Disconnect the sensor from the engine wiring harness and carefully raise the EGR from its seated position Some position sensors can be separated from the EGR valve to allow access to the sensor plunger e test the position sensor use POTENTIOMETER SWEEP TEST under GENERAL SENSORS Fluke 98 Users Manual Test Tool Key Sequence Vv C mV V v MENU AIR FUEL IGNITION ELECTRICAL SYSTEM SCOPE MULTIMETER VEHICLE DATA INSTRUMENT SETUP SENSORS MENU GENERAL SENSORS OXYGEN SENSOR DUAL OXYGEN SENSOR TEMPERATURE SENSOR KNOCK SENSOR POTENTIOMETER SELECT SELECT Connect the test leads as displayed by the test tool s Connection Help and shown in Figure 5 26 OK O y Starts the EGR test Figure 5 26 Testing an EGR Valve 578052 Automotive Applications 6 00 gt FREQUENCY AUTO 512 v PEAK PEAK 460 gt v 83 3 ms PULSE WIDTH v ZA 5 28
111. er They can also cause interference in other more sensitive areas of the car s sensor and control system Measurement Conditions e Activate the item under test and watch the test tool s display Test Tool Key Sequence SELECT SENSORS AIR FUEL IGNITION SCOPE MULTIMETER VEHICLE DATA INSTRUMENT SETUP p ELECTRICAL SYSTEM MENU SELECT mV CHARGING BATTERY TEST irs POTENTIOMETER F5 SOLENOID AND DIODE VOLTAGE DROP STEPPER MOTOR Connect the test leads as displayed by the test tool s Connection Help and shown in Figure 5 54 OK 5 Starts the Solenoid and Clamping Diode test 5 86 Fluke 98 Users Manual Figure 5 54 Testing a Solenoid and Clamping Diode 202 v maximum HOLD 200 my minimum 710 2 5 S ys DIV SOLENOID AND DIODE e REPERT OHM TEST Figure 5 55 Result Display from a Solenoid and Clamping Diode Test Automotive Applications 5 87 Clamping Diodes Voltage increases Peak is clamped due to the collapse against the diode of coil voltage wee threshold voltage Battery voltage Ground Specifications may vary Consult manufacturer s specifications 5 88 Fluke 98 Users Manual 23 Voltage Drop In automotive circuits even the smallest loss of voltage will cause poor performance Connect the instruments lead to the side of the device nearer the battery positive terminal an
112. er Cable PM9080 001 Serial Printer Interface EPSON FX LQ HP Thinkjet HP Laserjet Print screens Full PC Interface Transfer setups screens measurements etc 7 14 Fluke 98 Users Manual APPENDIX 7B Parts and Accessories Service Manual Part Number 4822 872 05371 Replacement Parts for the Standard Kit Contents PART ORDERING NUMBER Yellow Holster PM9083 001 NiCad Battery Pack PM9086 001 Power Adapter Battery Charger PM8907 80 See Appendix 7C 1 for Universal Europe 230V 50 Hz 3 for North America 120V 60 Hz 4 for United Kingdom 240V 50 Hz 6 for Japan 100V 60 Hz 7 for Australia 240V 50 Hz 2 8 Universal 115V 230V US Plug Automotive Hard Carrying Case C98 Shielded Test Lead STL90 Red 5322 321 63017 Shielded Test Lead STL90 Grey 5322 321 63018 Ground Leads for STL90 Shielded Test Leads 25 cm 10 inch Black 5322 321 63019 Ground Lead unshielded with banana plugs 1 5 m 60 inch Black 5322 397 60156 Ground Extension Lead unshielded 1 5 m 60 inch Black 5322 321 61945 BNC Extension Lead for STL90 5322 321 63021 Secondary Pickup with Ground Lead or Secondary Pickup with three HEI plates PM9096 101 Europe only CAP 90 2 Inductive Pickup RPM90 Filter Adapter Blue 5322 263 50246 Alligator Clips Red and Black AC85A Alligator
113. ess to select VEHICLE ee RANGE B RANGE A the arrow keys DATA MOVE MOVE A for ranging or moving the primary 1 re rs 55 a ignition signal Press to select the arrow keys Press to select the arrow keys for moving CURSOR 1 or 2 for ranging or moving the TDC sensor signal on INPUT B Place the cursors as indicated on the above screen Using the Automotive ScopeMeter Test Tool 3 27 Dwell The test is done with the shielded test lead on INPUT A connected to the primary side of the ignition coil LL 5 AUEEEEEN Function Keys and Result Screens 396 gt owe AUTO 1667 rem 720v Sms DIV DWELL VEHICLE DWELL DATA ms M MOVE Press to select between readings in 96 degrees crankshaft rotation or in ms 3 28 Fluke 98 Users Manual USING DIESEL FUNCTIONS The diesel test functions are selected if IGNITION DIESEL has been set in the VEHICLE DATA menu See Changing Vehicle Data on page 3 57 MENU AME i AIR FUEL ADVANCE DIESEL ELECTRICAL SYSTEM SCOPE MULTIMETER VEHICLE DATA INSTRUMENT SETUP Diesel injector Use this menu option to check injection pressure pulses on a diesel engine with use of the optional Diesel Probe The Diesel Probe should be clamped on a straight and clean part of the fuel pipe close to the injector menu EL
114. est Tool 1 4 Using the Tilt Stand hee ees 1 5 Accessories Overview 1 5 Powering the Test Tool 1 6 Adjusting the Display Contrast 1 7 Resetting the Test Tool 1 7 Performing a Navigation Exercise 1 8 POWER SOURCES 1 11 Minimizing Signal Noise 1 11 CHARGING THE BATTERY 1 12 Saving Battery Life 1 12 USING THE KEYS 1 13 Keypad Overview 1 13 Key Descriptions 1 14 READING THE DISPLAY 1 16 Menu Display and ON LINE HELP 1 16 Getting Extended Information During Menu Selection 1 16 Result Display and ON LINE HELP 1 17 Getting Information About the Function Keys During a Running Test 1 18 MEASUREMENT CONNECTIONS 1 19 INPUTZA Red eve eS 1 19 INPUT B Grey a 1 19 COM TRIGGER nep ee OX eee 1 19 TRIGGER as single
115. evious settings are activated m 2 m m N m gt m Freezes the display HOLD is displayed at the top right Also displays a menu to save recall and print screens m m o gt E E Takes you back to the main navigation menu 1 16 Fluke 98 Users Manual READING THE DISPLAY Menu Display and ON LINE HELP During menu selection the bottom part of the screen is used to display the function key menu Above it brief information is displayed about the highlighted menu option to help you in making the right choice MENU SENSORS Highlighted n AIR FUEL Menu selection Menu Option c window lists selectable ELECTRICAL SYSTEM NC ILS SCOPE MULTIMETER VEHICLE DATA INSTRUMENT SETUP Information about highlighted Gives a list of measurements Menu Option for the ignition system Function Key Menu E 1 BACK SELECT Figure 1 11 Example of Menu Selection Display Getting Extended Information During Menu Selection When you press this key you get extended information about the highlighted menu option See Figure 1 12 Introducing your Automotive ScopeMeter Test Tool 1 17 Function info IGNITION Highlighted menu option The IGNITION that you can Primary menu gives Functions use to measure the ignition system Extended Information For each measurement the optimal settings are auto
116. functions and the related result screens see the following Using the Automotive ScopeMeter Test Tool 3 53 Hz DUTY CYCLE PULSE WIDTH I SET ZERO Press to test the signal frequency in Hz screen Q Press to test the duty cycle of the signal screen If you select the duty cycle of the negative going pulse is displayed If you select the duty cycle of the positive going pulse is displayed Press to test the pulse width of the signal screen 3 If you select the width of the negative going pulse is displayed If you select the width of the positive going pulse is displayed Press to use the present reading as zero reference display A 3 54 Fluke 98 Users Manual Testing Current Test current with the optional Current Probe j MULTIMETER A OAE AMP DC AC Function Keys and Result Screen Deo 1008 1008 Sus D1V MULTIMETER AMPERE AC DC MA Aio Press to use the present Press to measure reading as zero reference dc current Fo rs F4 rs display A F2 F3 F4 F5 Press to measure Press to select between 1 mV A tms eurent and 10 mV A only if CURRENT PROBE 90i 610s has been selected in TEST LEAD SETUP Press to measure ac dc true rms voltage Figure 3 11 MULTIMETER AMPERE Display Don t forget to set the Current Probe to zero before using it for measurements refer to th
117. he measured signal Figure 1 18 Incorrect Grounding Noise Pickup on Unshielded Ground Lead 3 Measurement faults or short circuit with the DUAL INPUT SCOPE function This occurs when you perform floating measurements with grounding at different points INPUT A INPUT B Er NL E Figure 1 19 Incorrect Grounding Shortcircuit by Grounding on Different Potentials INPUT A INPUT Figure 1 20 Correct Grounding Grounding at One Point 1 22 Fluke 98 Users Manual Test Tool Grounding for Measurements on the Ignition System For the safe use of the test tool you must connect the COM input to engine ground before you perform measurements on the ignition system with the Secondary Pickup or the Inductive Pickup To prevent ground loops connect all ground leads to the SAME engine ground Chapter 2 Tutorial INTRODUCTION 1 2 POWER ON OFF BACKLIGHT CONTRAST 1 3 VEHICLE DATA SETUP 1 4 BATTERY VOLTAGE TEST 1 5 RESISTANCE MEASUREMENT 1 7 POTENTIOMETER TEST 1 9 OXYGEN SENSOR TEST 141 GENERAL SENSORS TEST 1 13 RPM MEASUREMENT
118. hicle This test is done with the shielded test lead on INPUT A to test voltage or with the optional current probe to test current ue J ELECTRICAL SYSTEMS m CHARGING Function Keys and Result Screens OO 0431 7 n 1985 10V i 2 5 20 CHARGING m Pressto oie cos dc charging x Sms DIV voltage 1 CHARGING PP VOLT VOLT gittis AMP Press to measure CHARGE RIPPLE RIPPLE ripple voltage 4 Press to measure P Press to measure dc charging current 2 ripple current 2 1 Use shielded test lead 2 Use current probe These screens display the dc voltage and the rms ripple voltage from the vehicle s alternator CHARGE Indicates the dc voltage output of the alternator RIPPLE Indicates the rms voltage of the ripple that rides on top of the alternator output voltage These screens display the dc current output from the alternator 4 CHARGE Indicates the dc charging current RIPPLE Indicates the rms ripple current during battery charging Fluke 98 Users Manual Battery Test Use this menu option to test the battery performance while cranking the engine The test is done with the shielded test lead on INPUT A to test voltage or with the optional current probe to test current LEGI M BATTERY TEST Function Keys and Result Screens 648 maximum 11 2 END OF SIGNAL v BEGINNING oF steve HOLD 121
119. icating a lean condition The titania sensor used on some vehicles changes resistance as the oxygen content of the exhaust gas changes This results in a low output voltage from a rich condition and a high output voltage from a lean condition Measurement Conditions for the Oxygen Sensor Test e un the engine until the oxygen sensor is warmed to at least 600 F 315 in closed loop Use jumper leads or back probe to make connection at the sensor wiring connector e Run the engine at idle while increasing engine speed Test Tool Key Sequence P MENU SELECT CO menu m s F5 IGNITION ELECTRICAL SYSTEM SCOPE MULTIMETER VEHICLE DATA INSTRUMENT SETUP SENSORS MENU SELECT GENERAL SENSORS irs DUAL OXYGEN SENSOR F5 TEMPERATURE SENSOR KNOCK SENSOR POTENTIOMETER Connect the test leads as displayed by the test tool s Connection Help and shown in Figure 5 3 OK Starts the oxygen sensor test Automotive Applications ST8043 Figure 5 3 Testing an Oxygen Sensor 936 nv AUTO 566 nv AVERAGE 128 my minimum 1005 is 7DIV 2 0 0 OXYGEN SENSOR e RANGE Figure 5 4 Result Display from an Oxygen Sensor Test 5 8 Fluke 98 Users Manual Oxygen Sensor Zirconia Maximum peak voltages Rise and Fall times increase should reach at least by aging and poisoning 800 mV or more of the sensor Peak to peak volt
120. ie cepe et Be ee BR end V 7 17 Battery Life een oh pele eee E HEIL ee 1 12 Battery 1 6 5 Battery Test sie 65 4 6 tank add qm deca eite 3 32 5 79 iss anti 3 60 BNC Extension VI Burn Times scu aed Es IM Ven e d 3 24 3 25 Burn Voltages 33 25 isto m obedire i UR durent t RO s 3 24 3 25 C Calibrating the Test Leads 3 62 6 6 Charging suce n ae ee b uma tst oes 3 31 5 81 Charging Adapter 2 4 2 ren 1 11 Charging CUrrent sosis rame i Ne WAG AS EUH 3 31 Charging the Batteries 6 2 Charging the 1 12 Charging Voltages sai iier sadade Dno a A a AA AE tees 3 31 Clamping Diode 5 85 Cleaning a e E bis 6 2 Compression 5 73 Compression test 3 45 Connection Helpe one aat eeni aine g ne sees 1 10 3 9 3 61 Connection 1 10 Connections rb morer IAN oe SR pe E Ni 1 19 Contih lby erem each A ERR AR 3 49 1 2 Fluke 98 Users Manual NIC PL 1 14 2 3 3 58 Conventional 5
121. increasing as it crosses the Trigger Level a negative Slope requires the voltage to be decreasing Trigger Source The test tool input that supplies the signal to provide the trigger Vertical Scale The scale used for vertical display vertical sensitivity expressed in certain units per division Voltage Drop Voltage loss across a wire connector or any other conductor Voltage drop equals resistance in ohms times current in amperes Ohm s Law Waveform The pattern defined by an electrical signal Index 1 4 A AG us oad bedi b Eri but eel RE RSS eee 3 40 Adapters dro eoe shes neds ate ata tate VI 3 4 s 6o aas be Me taces dots Pd mos pec oat 3 26 Advance Diesel ups P e Rie Eso etg 3 29 Air Flow Sensors oon eee Be lae y Terga sv d 5 37 Alligator Clips OR ee Rate decr ce vrac ROC tg eus VI 3 5 Amplitude s EAD Raw teas dE a PA AE ERE 1 14 Anti Lock Wheel Speed Sensor 5 33 Auto Ranges o eerie atte ede eee ines 1 3 1 15 3 39 3 48 Automatic Power Shutdown 1 12 B Back Probe Pins 0 ee hrs VI 3 5 Backlight riore EY ER a ee en 1 14 2 3 Banana Adapters aa ede a e aa a E a E E a i 3 5 Batteries in Optimal 6 2 Battery Chargers n
122. ion information and instructions to perform the test See the test setup in Figure 5 50 OK The battery test will now start Fluke 98 Users Manual Figure 5 50 Testing Battery Condition AMP BEGINNING OF srana HOLD MINIMUM END DF SIGNAL WIL isa un ou ld BATTERY TEST REPEAT TEST 200ms DIV t RANGE Figure 5 51 Result Display from a Battery Condition Test Automotive Applications 5 81 21 Charging Ripple Voltage Output Voltage Diode Test and Field Control CHARGING OUTPUT TEST Late model electronic voltage regulators maintain a charging voltage of about 13 to 15 volts Sufficient output from the charging system is required to maintain battery charge and meet vehicle demands RIPPLE VOLTAGE MEASUREMENT An alternator generates current and voltage by the principles of electromagnetic induction Accessories connected to the vehicle s charging system require a steady supply of direct current at a relatively steady voltage level You can t charge a battery with alternating current so it must be rectified to direct current A set of diodes part of the alternator s rectifier bridge modifies the ac voltage produced in the alternator to the dc voltage used by the car s systems When analyzing a charging system look for both ac and dc levels The ac level is called ripple voltage and is a clear indication of diode condition Too high a level of ac v
123. ircuit Test of the Knock Sensor Retarding Test e Perform the Timing Advance test as described in Application 19 e Use a small mallet and gently tap the engine block near the sensor to activate the knock sensor e Watch the ignition timing to insure that the timing retards as a knock signal is received by the ECU Fluke 98 Users Manual Test Tool Key Sequence for the Out of circuit Knock Sensor Test MENU mV SENSORS 7 AIR FUEL IGNITION ELECTRICAL SYSTEM SCOPE MULTIMETER VEHICLE DATA INSTRUMENT SETUP SENSORS MENU GENERAL SENSORS OXYGEN SENSOR DUAL OXYGEN SENSOR TEMPERATURE SENSOR KNOCK SENSOR POTENTIOMETER SELECT SELECT Connect the test leads as displayed by the test tool s Connection Help and shown in Figure 5 35 OK 2 Starts the Knock Sensor test If necessary use the arrow keys to adjust the range and press F3 to repeat the test Figure 5 35 Testing a Knock Sensor Disconnected ST8057 Automotive Applications 5 59 222 PEAK PEAK HOLD amp 33 FREQUENCY 4S08mV 1500mV id 5000 01 KNOCK SENSOR e REPEAT TEST RANGE Figure 5 36 Result Display from a Knock Sensor Test Knock Sensor Amplitude changes Frequency change The pattern from this sensor is directly related to the cause and severity of the knock For this reason each signal looks slightly different
124. irect input 100 mV 300 mV 1V 3V 10V 30V 100V 250V Accuracy valid from 5 range 50 Hz to 60 Hz 1 10 counts cds eid 20 Hz to 20 kHz 2 15 counts Nguoi DIT MM MILIUM M MICI 5 Hz to 1 MHz 396 20 counts Full Scale ei tte tete 1000 or 3000 counts Crest Factor Automatic ranging on crest factor overload Common Mode Rejection Ratio gt 60 dB DC to 60 Hz Frequency enses rede IEEE pepe is 1 Hz to 5 MHz Resolutio r aede e t dede 4 digits AGGULae y osse rette RR NR UN ERE ROG 0 5 2 counts RPM ubi Rui selectable n pulses 720 Range dde banned eredi cr e d tva Eie 600 RPM to 5 000 RPM i EE EUR cea 4 digits RESORT 1 5 counts Duty Cycle positive or negative pulse nt 2 096 to 98 096 Accuracy logic or pulse 0 5 2 counts Pulse Width positive or negative pulse Range a ettet dS cx Rc 250 us to 50 ms Flesoltitions 3 digits focum 0 5 2 counts F Temperature for optional temperature probes TROOS Range tte e ede recu 50 C to 200 C 58 to 392 F 0 esesecsessesssseesessesecseseesesscsesscsessesussecueseeuesesseauesecussesseseeseeueseenees 1 0 5 C Other Scaling isis cei ear ne te gcc enna 1
125. is created from the unique shape of the trigger wheel tooth passing the pickup coil Minimum peak levels should be equal to each other If one is shorter than the other look for a chipped or bent tooth on the trigger wheel Primary Distributor Triggering Optical Voltage transitions should The Upper horizontal lines should reach be straight and vertical reference voltage fg 2 Peak to peak voltages should equal reference voltage Hd mM lt 1 ne W The lower horizontal lines should almost reach ground SIGNAL PULSE WIDTH MAY VARY DUE TO SIZE VARIATIONS IN THE TRIGGER WHEEL WINDOW Specifications may vary Consult manufacturer s specifications Automotive Applications 5 73 18 Relative Compression The test tool calculates the relative compression of the cylinders by measuring the voltage drop or current increase created from each cylinder during cranking For the synchronized SYNC relative compression test the Trigger Pickup clamped on the spark plug wire of cylinder 1 is used to identify the cylinders in the result display This is a very useful test to determine compression differences between cylinders and identify a weak cylinder The Synchronized Relative Compression test does not work on DIS and COP systems and on Diesel engines Measurement Conditions e This test requires several conditions to get test results that can be interpreted
126. it with actual test results RECALL Displays the screen last saved in The screen From memory 5 is displayed F3 memory ok OK Press this key to remove the message HH a Gee Use these keys to move RECALL the screen memory pointer BACK FO SEARCH 5 PRINT SELECT L1 to the left F2 or the right F3 to display the previous or the next screen in memory The pointer can move only if more than one screen has been saved in memory Look up the desired screen PRINT Press this key if you want to copy the screen to the printer The printer must be connected via the optionally available RS232 cable SELECT irs Press to select the displayed 17 F5 screen The test tool activates 488 v coum the settings that are valid for the 454 x cycle v recalled screen The 280 waveform s from the recalled screen are displayed in grey to enable distinction from the active waveform s for comparison 2 4 gt r 2ms DIV GENERAL SENSORS e vM CONTINUITY OHM OPEN CLOSE MOVE Figure 4 6 Comparison of recalled screen grey with active result 4 14 Fluke 98 Users Manual USING CURSORS A cursor is a vertical line placed over the displayed waveform to measure values at certain points This function is not possible for all tests Use cursors as follows Press to display the Function Key Menu for cursor operation If cu
127. ke 98 Users Manual Measurement Conditions CHARGING OUTPUT TEST e Connect the test tool to the vehicle s alternator e Engine RUNNING Test the alternator at idle and under load Slowly increase engine speed e Load the charging system by turning on vehicle accessories such as the headlights heater blower motor fan and windshield wipers RIPPLE VOLTAGE MEASUREMENT NOTE This measurement is made at the rear case half of the alternator and not the battery The battery can act as a capacitor and absorb the ac voltage e Connect the test tool to the vehicle s alternator BAT terminal e Engine RUNNING Test the alternator at idle and under load Slowly increase engine speed e Load the charging system by turning on vehicle accessories such as the headlights heater blower motor fan and windshield wipers e AC ripple voltage should not exceed 500 mV ac CHARGING FIELD CONTROL TEST e Connect the test tool to the alternator s field connection e Engine RUNNING Test the field control with the engine idling and under load RECTIFIER DIODE TEST e lest the alternator s rectifier bridge diode set and trio with the alternator disassembled e Follow the vehicle manufacturers recommendations for diagnosing a defective alternator Automotive Applications 5 83 Test Tool Key Sequence MENU SELECT ay SENSORS AIR FUEL IGNITION SCOPE MULTIMETER VEHICLE DATA INSTRUMENT SETUP p
128. l dai ret fae ih rU ee 5 46 12 Mixture Control Solenoid MC Pulse Width 5 52 13 Idle Air Control Idle Speed Control IAC ISC 5 54 IGNITION ex noy ti as ee ee 5 57 14 Knock Sensor Piezo Crystal Burst Pattern 5 57 15 Secondary 5 60 16 Primary Ignition 5 67 17 Distributor Triggering 5 69 18 Relative Compression 5 73 19 Timing Advance 0 cece 5 76 ELECTRICAL SYSTEM 5 79 20 Battery Test redria se edie eme bebo bU headed 5 79 21 Charging cc estos ed ee eee ses oet Ve er VER EE 5 81 22 Solenoid and Clamping Diode Test 5 85 23 Voltage Drop ze ia dock Ae ES 5 88 24 Voltage Tests mde RR E ed eet re 5 90 DIESEL vsus TE EA WAV eee te ee 5 92 25 Diesel RPM Measurements and Diesel Injection Pattern Display 5 94 26 Diesel Advance 5 96 5 2 Fluke 98 Users Manual AUTOMOTIVE APPLICATIONS Applications are divided into four groups 1 SENSORS Measurements on sensor type devices 2 AIR FUEL Measurements on devices used in the vehicle s air and fuel management system 3 IGNITION Measurements on devices us
129. l Injector The test is done with the shielded test lead on INPUT A J FUEL INJECTOR Result Screen 368 Duration of ms INJECTION PULSE the injection 896 v maximum pulse Maximum voltage of the induced peak D20V 2ms D1 Press to display FUEL INJECTOR ie Press to select the vehicle data VEHICLE the arrow keys menu You can make DATA MOVE for ranging or changes to match moving the primary the vehicle under test Fo Fs Fa p ese ignition signal INJECTION PULSE WIDTH Using the Automotive ScopeMeter Test Tool 3 21 Potentiometer re J DUE mmm POTENTIOMETER This menu option performs the same as POTENTIOMETER in the SENSORS MENU Refer to the description of this menu option on page 3 19 Stepper Motor Use this menu option to test the voltage pulse that controls a stepper motor or to test the resistance of the stepper motor The test is done with the shielded test lead on INPUT A J LIONE STEPPER MOTOR Function Keys and Result Screens 156 m HOLD 10182 600 20 300 10 Press to test STEPPER MOTOR e voltage REPEAT 2 um pulse that i subo ox oe 8 Msi controls the STEPPER MOTOR p stepper motor rs Sand Press this key to Press this key to measure the resistance repeat the test F2 ofthe stepper motor dis
130. lp and shown in Figure 5 16 OK 2 Starts the Vehicle Speed Sensor test 5 30 Fluke 98 Users Manual ST8048 Figure 5 16 Testing a Vehicle Speed Sensor 198 Frequency AUTO 164 v PEAK PEAK 520 x v 265 ws PULSE WIDTH v SD o u a ar ae SaN GENERAL SENSORS e uus CONTINUITY OHM OPEN CLOSE MOVE Figure 5 17 Result Display from a Magnetic Vehicle Speed Sensor Test Automotive Applications 5 81 55 7 gt FREQUENCY AUTO 780 v PEAk PEAK 530 v 920 ms PULSE WIDTH v n ona ok es STI GENERAL SENSORS e 0 CONTINUITY OHM OPEN CLOSE MOVE Figure 5 18 Result Display from a Hall Effect Vehicle Speed Sensor Test Vehicle Speed Sensor Magnetic If the amplitude is low look for an excessive air gap between the trigger wheel and the pickup If the amplitude waivers look for a bent trigger wheel or shaft If one of the oscillations look distorted look for a bent or damaged tooth on the trigger wheel Peak to peak values should be identical and the signal should look symmetrical at constant speed V VY V V V Improper air gap or missing teeth on a trigger wheel will cause an erratic signal 5 32 Fluke 98 Users Manual Vehicle Speed Sensor Optical The upper horizontal lines should reach Voltage transitions reference voltage should be straight and vertical m nm n Mw mc Peak t
131. lt 3 24 3 25 Coolant Temperature Sensor 5 13 Crankshaft Camshaft 5 5 21 C rtent i eed satay ORC e 3 54 Current Proben uae ewe da be edd RES 1 3 3 5 3 62 UISOTS 3 a ettet de ete UR et x E be hime ea RR xe ad 1 14 1 15 2 32 4 14 D Danmping iei bees meet eel ge Beate aaa Rusa 1 14 DC Goupling mm ed Pa we a 3 40 Demo Board 52 2 ww ae Decr erp err Ander VI 2 2 Diesel ena UCET 5 92 Diesel Advance 5 96 Diesel Extension 3 6 Diesel Injection Pattern Display 5 94 Biesel Injector nli Peed ee deed HERI 3 28 Diesel Probe Set nir inie pa e aa ERE EA eee 3 6 Diesel RPM lt 5 94 Diesel Test 3 28 Diode so enim hacker WERE a eee tes Lee p REI 3 49 Display Contrast 0 0 cece e 1 7 Display Recorded 510 4 9 Disposing of Batteries liliis 6 4 Distributor 5 69 Distributorless Ignition 5 5 60 Divisions c tik ki ch le 3
132. matically chosen Function BACK L Key Menu ABOUT INFO Figure 1 12 Example of Extended Information Display when the i Key is pressed during Menu Selection BACK Press this key to return to the menu selection display Result Display and ON LINE Most measurement results are displayed as a waveform with related numerical values See an example display in Figure 1 13 Numerical Results relating to the waveform below Waveform Result 170 w 909 ren 1 84 BURN TIME 1 40 kv BURN voLTAGE SPARK YOLTAGE Horizontal Range Vertical Range value 5 kV per Division Menu test selection 2 ms per Division 20kV This icon indicates that you can use the arrow keys to change the time base and voltage scale S5kV 2ms DIV Function Key Menu ECT ceret P EAE E Functions accessible Data EMIEN3 UPDATE MOVE through Function Keys F1 to F5 Figure 1 13 Example of Result Display 1 18 Fluke 98 Users Manual Getting Information About the Function Keys During a Running Test When you press this key during a running test you get information about the function keys that can be used for the test For the test shown in Figure 1 13 this will display the information shown in Figure 1 14 Function info page 1 of 2 VEHICLE PARADE FAST DATA EMIEN3 UPDATE VEHICLE Gives a list of options to DATA define
133. motor terminal is preferred 2 The RPM90 Inductive Pickup is not used for the unsynchronized UNSYN Relative Compression test 28 5 mn REL COMPRESSION SYNC VEHICLE PROBE REPEAT DATA MMM AMP TEST Figure 5 47 Result Display from a Synced Relative Compression Test Automotive Applications 5 75 When using the synchronized Relative Compression test REL COMPRESSION SYNC do not interrupt the ignition system to disable engine run as the ignition system is needed to trigger the measurement via the RPM90 Inductive Pickup Instead disable fuel supply e g remove the fuel pump fuse or disconnect fuel injector wires Tip speed your diagnosis start your evaluation of the engine s mechanical condition by using the REL COMPRESSION UNSYNC mode This will quickly identify any low compression cylinders causing problems To identify which cylinder is at fault use the REL COMPRESSION SYNC mode Remember that the REL COMPRESSION SYNC mode needs an electrical signal from cylinder number one s spark plug firing so disable fuel not spark 5 76 Fluke 98 Users Manual 19 Timing Advance Two channels of the ScopeMeter test tool are utilized to determine actual timing advance of the ignition system INPUT A is connected to cylinder number one or the primary side of the ignition coil module and INPUT B is connected to the TDC signal Using the cursors the calculated timing advance is shown in degrees of advance
134. mperatue increases Sensor Oxygen sensor Off time The part of an electrical signal during which an electrical device is energized On time The part of an electrical signal during which an electrical device is de energized Optically Isolated RS 232 Adapter Cable An accessory that allows data communication between the FLUKE 98 and a computer with RS 232 serial port or it allows you to print Peak Value The highest and lowest value of a waveform Peak and Hold A method for regulating the current flow through electronic fuel injectors Supplies higher current necessary to energize the injector then drops to a lower level just enough to keep the injector energized Pixel The smallest graphic detail possible for the liquid crystal display LCD PTC A resistor having a Positive Temperature Coefficient resistance increases as temperature increases Pulse A voltage signal that increases or decreases from a constant value then returns to the original value Pulse Modulated A circuit that maintains average voltage levels by pulsing the voltage on and off Range Specified limits in which measurements are done Reference Voltage An unaltered voltage applied to a circuit Battery plus and ground are examples of reference voltages Roll Visual log of a waveform activity that is useful when measuring lower frequencies Root Mean Square RMS RPM Conversion of AC
135. ms DIV GENERAL SENSORS P 0 CONTINUITY OHM OPEN CLOSE MOVE Figure 5 27 Result Display from an EGR Valve Test Exhaust Gas Recirculation EGR valve Position Sensor EGR valve open nearly all the way allowing flow of exhaust gas E Specifications may vary Consult manufacturer s specifications EGR valve closed restricting the flow of exhaust gas 5 46 Fluke 98 Users Manual 11 Fuel Injection FI Current Controlled Peak and Hold including Throttle Body Injection TBI Conventional Saturated Switch and Pulse Width Modulated Injectors Electronic fuel injectors are controlled by the ECU and influenced by a variety of operating conditions including temperature engine load and feedback from the sensor during closed loop operation Fuel injection on time can be expressed in ms pulse width and indicates the amount of fuel delivered to the cylinder Greater pulse width means more fuel provided the fuel pressure stays the same The ECU provides a ground path for the injector through a driver transistor When the transistor is on current flows through the injector winding and the transistor to ground opening the injector valve There are three main fuel injector systems each with its own method for controlling fuel injection All injectors have some method for limiting the electrical flow through the injector too much current flow could burn out the injector Current Controlled Peak
136. n During the compression stroke of a diesel engine the intake air is compressed to about 50 Bar 735 psi The Temperature hereby increases to 700 to 900 C This temperature is sufficient to cause automatic ignition of the Diesel fuel which is injected into the cylinder shortly before the end of the compression stroke and very near to the TDC Fuel is delivered to the individual cylinders at a pressure of between 350 and 1200 Bar 5145 psi and 17 640 psi The start of the injection cycle must be timed within 1 Crankshaft to achieve the optimum compromise between engine fuel consumption and combustion noise A timing device controls the start of the injection and will also compensate for the propagation times in the fuel delivery lines Diesel rom measurements are necessary for idle speed adjustments maximum RPM checks and for smoke tests at fixed rpm values Measurement Conditions Cleaning The fuel lines to measure on should be cleaned in order to assure a good metal contact of the fuel line itself to the piezo pickup and ground clip Use sandpaper and preferably a de greaser to clean the lines Positioning and Probe connection The Piezo adapter should be placed as close as possible to the Diesel injector on a straight part of the fuel line Use the piezo to probe tip adapter and slide the faston to the pickup clamp the ground clip close to the piezo pickup Make sure that the groundclip does not make contact to the piezo itself
137. n line plug and switchable line voltage 115V 10 or 230V 15 The line frequencies for all units are 50 60 and 400 Hz 10 7 18 Fluke 98 Users Manual 8907 803 8907 806 8907 807 sre Figure 7C 1 PM8907 Versions CAUTION At delivery the PM8907 808 is set to 230V and is provided with a Power Supply Cord and Attachment Plug that is for use at the 115V setting only When operating the unit at the 230V setting you need a North American to European line plug adapter Before you connect the PM8907 808 to the local line first check the preselected voltage setting on this unit You can find the voltage selector switch on the bottom of the PM8907 808 If necessary select the corresponding line voltage with the slide switch and ensure that the proper voltage is visible in the window of the slide selector see Figure 7C 1 Appendixes 7 19 APPENDIX 7D Warranty and Service Centers LIMITED WARRANTY amp LIMITATION OF LIABILITY Each Fluke product is warranted to be free from defects in material and workmanship under normal use and service The warranty period is three years and begins on the date of shipment Parts product repairs and services are warranted for 90 days This warranty extends only to the original buyer or end user customer of a Fluke authorized reseller and does not apply to fuses disposable batteries or to any product which in Fluke s opinion has been misused altered neglected
138. n test the CUM input to ground the connection infor mation would help you make the connections ul OK Figure 3 4 Connection Help Screen However for this example it is not necessary to make the connections shown Press F1 OK to actually enter the test The bottom display shows the Function Key Labels for the SECONDARY IGNITION test function 3 10 Fluke 98 Users Manual SECONDARY CONVENTIONAL STA E 4 Function Key Labels Figure 3 5 Function Key Labels for SECONDARY IGNITION Using the Function Keys The labels displayed on the bottom display above the function keys F1 to F5 indicate what the keys do when you press them See the example in Figure 3 5 above For each test one or more Function Key Labels are displayed depending on the sub selections possible Pressing a function key that has no label blank area on the display has no effect The same Function Key Label can appear in several tests In each case it performs a similar function Examples of Function Key Labels The following is an example of two separate functions on the same function key The highlighted function is the active one You can use the function key to toggle between the functions This is the F3 Function Key Label for SECONDARY IGNITION SINGLE See Figure 3 5 When you press rs can select between PARADE and SINGLE cylinder test F3 CONTINUITY VOLT AND TIME is the
139. n the actual reading would be 105 mV The present reading is replaced by a new zero reference value Reading Test Results on the Display Measurement results can be displayed as numeric values referred to as readings and waveform The types of readings depend on the test taking place For example during a GENERAL SENSORS test PEAK PEAK FREQUENCY DUTY CYCLE and PULSE WIDTH are displayed as readings see Figure 3 6 The values you see on the display most often depend on the vehicle under test Refer to the Service Manual of the vehicle manufacturer In Chapter 5 Automotive Applications you can find typical results of certain applications 3 12 Fluke 98 Users Manual PEAK PEAK DUTY CYCLE V PULSE WIDTH v 757 4 FREQUENCY AUTO 5 TE cael d ow 3 nj gt 50005 01 GENERAL SENSORS P a CONTINUITY OHM OPEN CLOSE MOVE Figure 3 6 Result Display from the GENERAL SENSORS Test Oo Zero line for the horizontal timebase This point in time represents the trigger event Zero line for vertical signal amplitude OV line Vertical range 2V per division You can change this with the n up down arrow keys Notice when you do so that automatic ranging is turned off See 5 Press 5 to reactivate automatic ranging Horizontal timebase range 500 us per division You can change this with the left right arrow keys Notice
140. n you are in the SCOPE function 2 E Performs one of the following actions e anges Time Base up and down e Moves a waveform right and left e Moves cursor left and right Displays information about the highlighted menu choice during menu selection Displays information about the function keys when a selected test is running Changes the LCD Backlight intensity low medium high You can change the display contrast when you keep the key depressed Allows you to increase and decrease the damping of the displayed waveform and readings By increasing the damping you can remove noise from the signal so that the displayed waveform looks smoother and readings become more stable When you decrease the damping noise and glitches spikes may be visible Introducing your Automotive ScopeMeter Test Tool 1 15 ITEM DESCRIPTION A m lt o AUTO RANGE Sets automatic ranging on and off toggle When on the top right display shows AUTO When this function is set on it searches for the best range and time base settings and once found it tracks the signal When this function is off you should manually control ranging Allows you to use cursors for measurements on waveforms A cursor is a vertical line that you can move over the waveform like a ruler to measure values at specific points Turns the power on and off toggle When you turn the power on pr
141. nd display such a problem This record function can record up to 1280 divisions of continuous information The Flight Record function records screen snapshots from 200ms per division up to full time base speed The Plot Readings function allows you to plot up to four different readings of a signal over time with a single connection Min Max Trendplot continuously monitors the minimum maximum and average value of a signal s readings with time stamp The Automotive ScopeMeter test tool has a wide variety of accessories designed to enhance the test tool s measurement power The optional diesel accessories allows you to set injection pump timing and rpm with confidence The optional 90i 610s Current Probe will let you measure and analyze electrical system problems quickly and easily The optional TR90 Temperature probe makes oil surface and air temperature measurements safe and easy Test lead extensions are included for most of your long distance measurements A wide variety of probes and clips are included to make connection to the vehicle quick and easy Additional probes are available as accessories easily connecting to the test leads Even though your instrument has been designed to configure itself to almost any test review the following chapters to find out how easy test and measurement can be 1 4 Fluke 98 Users Manual QUICK TOUR A Look at the Test Tool RECESSED AREA FOR MEASUREMENTS DISPLAY SHOWS CONNECTIONS
142. nd off to extend injector on time while limiting the current applied to the injector Measurement Conditions Engine RUNNING after you have connected the test tool to the ground side of the fuel injector by using a back probe jumper wire or breakout box Begin the test with the engine idling and slowly increase engine speed while monitoring the injector signal Increase engine load by varying the MAP sensor signal or by changing the output signal from the oxygen sensor One method is to disconnect the oxygen sensor from its harness and ground the lead harness side This will cause the voltage signal going to the ECU to decrease The ECU will respond by widening the injector pulse width However this method may set an error code Hold the harness connector in one hand and touch the positive side of the battery This will cause an increase in oxygen sensor signal voltage going to the ECU The ECU will respond by narrowing the pulse width of the fuel injector Test Tool Key Sequence 5 MENU SELECT A SENSORS IFs IGNITION F5 ELECTRICAL SYSTEM SCOPE MULTIMETER VEHICLE DATA INSTRUMENT SETUP AIR FUEL MENU SELECT POTENTIOMETER IFs STEPPER MOTOR F5 OXYGEN SENSOR DUAL OXYGEN SENSOR GENERAL SENSORS Connect the test leads as displayed by the test tool s Connection Help and shown in Figure 5 28 OK Starts the Fuel Injector test Fluke 98 Users Manual
143. ndary Voltage 0 to 80 kV Burn Time 0 6 ms to 5 ms Burn Voltage 0 to 80 kV Relative Compression 0 to 100 contribution Alternator Ripple Voltage 0 to 300V Battery Condition Test 0 to 40V Fuel Injection Pulse Width 0 to 1800 ms Systems Automatically Tested Saturated Driver Conventional Throttle Body Injection Systems Current Controlled Peak And Hold Pulse Modulated Diesel Tests with Optional DPS90 Diesel Probe Set Engine Speed 400 to 10 000 RPM Advance Diesel Pump Timing in of crankshaft rotation Injection Pulse 10 us to 1200 ms Automated Sensor Tests The Sensors menu gives direct access to a wide variety of sensor measurements The best operating mode is automatically selected A few of the sensors tested automatically include Mass Air Flow Sensor MAF Manifold Absolute Pressure MAP Oxygen Sensor Zirconium and Titanium Dual Oxygen Sensor Temperature Sensors Position Sensors Camshaft Position Exhaust Gas Recirculation EGR Ride Height Sensors Magnetic Sensors Speed Sensors Knock Sensors Distributor Triggering Appendixes 7 3 Air fuel Systems Tested Mixture Control Feedback Frequency Control Valve CIS E Air Flow Meter Idle Air Compensation Exhaust Gas Recirculation EGR Electrical System Tests Battery Condition Test Charging Diode Test Field Control Ripple Voltage Measurement Cranking Voltage Reference And Ground Voltage Drop Clamping Diode Solenoid Tests Stepper
144. nection is open If you select CLOSE it beeps when the tested connection is closed 3 50 Fluke 98 Users Manual This screen displays the measured resistance in ohms OL This is displayed when the resistance is outside the test tool s maximum range This occurs when the resistance of the sensor is too high or the connection to the sensor is interrupted or open 2 This screen displays the forward voltage across a diode The test tool sends a small current through the diode to test the voltage across it Depending on the type of diode this voltage should be in the range from 300 to 600 mV A diode that has an internal short will display about OV OL This is displayed when the diode is defective or when it is connected in reverse See Figure 3 10 to verify the correct polarity of the connection If you are not certain about the polarity of the diode try the reverse connection If this also displays OL the diode is defec tive A good diode must display OL when connected in reverse Figure 3 10 Connection for Diode Test 5 This screen displays the continuity of a connection as follows OPEN If the connection is open or interrupted C L 0 e E fthe connection is closed or shorted Using the Automotive ScopeMeter Test Tool 3 51 Measuring RPM CS RPM Function Keys and Result Screens Press to select the shielded test lead on INPUT A or th
145. nfirm your selection BUTY CYCLE FS FREQUENCY test is activated DC AC TEMPERATURE C F Connection Help A message on the display asks you to connect the red test lead from INPUT A to the signal under test For this measurement connect the red test lead to INPUT A the red alligator clip to TP 4 GEN SENS and the black alligator clip to the GND connection of the Demo board Press OK to confirm your connection 2 22 Fluke 98 Users Manual Result 3Bep 3 08 A ims DIV MULTIMETER FREQUENCY HE w n umsn E The Next Step Press to display the RECORD menu Use the arrow keys to select RECORD PLOT READINGS M NN PLOT READINGS MIN MAX TRENDPLOT FLIGHT RECORD A Press SELECT to confirm your selection d F5 PLOT READINGS test is activated If there is old record data in memory press F1 YES to continue VIEW RECORDED SIGNAL record memory will be lost present contents of the Are you sure YES NO Result Max Scale en Present value Min Scale odd inin Press any key to stop recordins Do Change frequency by changing the RPM potentiometer and watch the display T To stop the Recording press any key Tutorial 2 23 RECORD MIN MAX TRENDPLOT The test tool s MIN MAX TRENDPLOT function records incoming signals and plots Minimum Maximum and Average o
146. ngle Firing Line spark initiated Points close or transistor turns ON Spark Line Spark is extinguished Points open or transistor turns OFF Coil oscillations Dwell Section Intermediate Section Firing Section Secondary Conventional Parade Firing lines should be equal A short line indicates low resistance in the wire A high line indicates high resistance in the wire Firing lines clearly displayed for easy comparison Available voltage should be about 10 kV on a conventional ignition System and even greater with an electronic system Spark lines can be viewed side by side for ease of comparison Cylinders are displayed in firing order Specifications may vary Consult manufacturer s specifications Automotive Applications 5 67 16 Primary Ignition DWELL Each time the breaker points or transistor opens the coil secondary winding discharges high voltage to a spark plug When closed the points or transistor allow magnetic saturation to develop in the coil The distributor or ignition dwell angle is the number of degrees of distributor rotation during which the points or transistor are closed or magnetic saturation time in degrees It normally takes about 10 to 15 milliseconds 010 to 015 second for an ignition coil to develop complete magnetic saturation from primary current Measurement Conditions e Follow the test tool s instructions
147. nly A signal with constant voltage and current DIS Distributorless Ignition System Division A specific segment of a waveform as defined by the grid on the display Dot One two or three vertically adjoining display pixels depending on the dot size forming a graphical unit for waveform display Duty Cycle On time or off time to period time ratio expressed in a percentage ECM Electronic Control Module on a vehicle ECU Electronic Control Unit on a vehicle EIA 232 D RS 232 C International standard for serial data communication to which the optical interface PM9080 of the FLUKE 98 conforms Electromagnetic Interference Mutual disturbance of signals mostly caused by signals from adjacent wiring EMI Electromagnetic Interference Appendixes TERM DESCRIPTION Feed Controlled Circuit A circuit that energizes by applying voltage it already has a ground Filter Frequency Electrical device that only passes or blocks certain signal frequencies An application can be removing noise from a signal The number of times a waveform repeats in one second measured in Hertz Hz where 1 Hz equals one cycle per second Function Key Labels Labels shown on the bottom display that indicate the function of the blue function keys F1 to F5 Function Key Menu The function key labels listed on the bottom display Glitch A momentary spike in a wav
148. ntical ScopeMeter test tools Automated tests including Engine Diesel Sensor Electrical System and Meter tests are specified for input A Scope specifications apply to both inputs A and B Banana jacks are used for external trigger input only For definitions of terms refer to IEC Publication 351 1 Safety Characteristics The ScopeMeter test tool has been designed and tested in accordance with IEC Publication 1010 Safety Requirements for Electronic Measuring Apparatus This manual contains information and warnings that must be followed by the user to ensure safe operation and to keep the instrument in a safe condition Use of this equipment in a manner not specified by the manufacturer may impair protection provided by the equipment Environmental Data The environmental data mentioned in this manual are based on the results of the manufacturer s verification procedures Engine Tests RPM 600 15 000 RPM 1 RPM resolution 1000 RPM 10 RPM resolution gt 1000 RPM Dwell Range Degree 0 to 360 1 resolution Milliseconds 0 to 1 000 ms 1 ms resolution Percentage 0 100 resolution 3 digits Timing Advance TDC degrees crankshaft rotation Ignition Patterns e indicates the test tool can measure it IGNITION PRIMARY SECONDARY TYPE SINGLE PARADE SINGLE PARADE Conventional DIS Coil on Plug 7 2 Fluke 98 Users Manual Primary Voltage 0 to 300V Seco
149. ntil the engine is cranked e when you press F3 REPEAT TEST until the engine is cranked BUSY This is displayed for about 6 seconds during cranking HOLD This is displayed when the test is completed Then stop cranking If WAIT remains displayed check the connections The peak value of the cylinder with the highest compression is displayed as the 0 reference The peak values of the other cylinders are displayed relative to the 0 reference Using the Automotive ScopeMeter Test Tool 3 47 USING MULTIMETER FUNCTIONS MENU MULTIMETER MENU SENSORS VOLT OC AC AIR FUEL OHM DIODE CONTINUITY IGNITION RPM ELECTRICAL SYSTEM FREQUENCY SCOPE DUTY CYCLE MULTIMETER PULSE WIDTH VEHICLE DATA AMP DC AC INSTRUMENT SETUP TEMPERATURE C F Making Connections INPUT A is used for all MULTIMETER tests The probes and test leads to be used depend on the type of test performed When you select a MULTIMETER test a connection help screen will guide you This tells you which probe or test lead to use and where to connect it 3 48 Fluke 98 Users Manual Testing Volt DC AC Use this menu option to test dc and ac voltages and ac dc voltage ue J Lu RR VOLT DC AC Function Keys and Result Screen 13515 ase ei oe a N PT 2 B Sms DIV MULTIMETER VOLT Press to measure AC AC DC E dc voltage e g battery voltage me E e E es Press to measure ac true rms
150. ntrol Idle Speed Control IAC ISC Duty Cycle and Voltage The idle air control IAC is controlled by the ECU to regulate or adjust engine idle speed and prevent stalling Some idle air control systems use a stepper motor to control the amount of air allowed to bypass the throttle plate and others use a bypass valve that receives a square wave signal from the ECU Due to solenoidsoleniod reactance this signal may be shaped differently Measurement Conditions e Engine RUNNINGafter you have connected the test tool to the Idle Air Control valve Monitor the valve s operation with the engine cold warming up and hot e Introduce a small vacuum false air leak and watch the signal from the ECU as it adjusts the valve s opening Test Tool Key Sequence menu SELECT SENSORS les IGNITION F5 ELECTRICAL SYSTEM SCOPE MULTIMETER VEHICLE DATA INSTRUMENT SETUP I AIRZFUEL MENU SELECT FUEL INJECTOR POTENT IOMETER ffs STEPPER MOTOR F5 OXYGEN SENSOR DUAL OXYGEN SENSOR 5 Connect the test leads as displayed by the test tool s Connection Help and shown in Figure 5 33 OK 2 Starts the Idle Air Control test Automotive Applications 5 8056 Figure 5 33 Testing an Idle Air Control Valve 250 gt FREQUENCY AUTO 385 v PEAK PEAK 47 7 x DUTY cycle v 200 ms PULSE WIDTH v gala RU Ve E 25 10V E E 2ms DIV GENERAL SENSORS 205 CO
151. nu A ag Use the arrow keys to highlight WERU MULTIMETER AIR FUEL a4 ELECTRICAL SYSTEM SCOPE Press SELECT to confirm your selection MULTIMETER INSTRUMENT SETUP Use the arrow keys to highlight MULTIMETER MENU 4 np VOLT DC AC CONTINUITY RPM FREQUENCY DUTY CYCLE Press SELECT to confirm your selection PULSE WIDTH MULTIMETER VOLT DC AC is ia EE bw activated Connection Help A message on the display asks you to connect the red test lead from INPUT A to the item under test For this measurement connect the red test lead to INPUT A the red alligator clip to the of the 9 volt battery and the black alligator clip to the of the battery The battery is not connected to the Demo Board for this test Press OK to confirm your connection Fluke 98 Users Manual Result 0 30 J 10 ae eee ee Sms D1 MULTIMETER VOLT AC DC He ZERO Tutorial 2 7 RESISTANCE MEASUREMENT A Multimeter Resistance measurement Exercise Measure the resistance of the potentiometer on the Demo Board Press MENU key to open the selection Menu Use the arrow keys to highlight MENU MULTIMETER E IGNITION ELECTRICAL SYSTEM Press SELECT to confirm your selection MULTIMETER INSTRUMENT SETUP Use the arrow keys to highlight MULTIMETER MENU OHM DIODE CONTINUITY FREQUENCY Press SELECT to confirm your selection Purse MULTIMETER OHM is
152. nverter clutch lockup electronic transmission shift levels and other functions from this signal There are three main sensor types used for the Vehicle Speed Sensor magnetic Hall effect and optical Variable Reluctance Sensors magnetic do not require a separate power connection and have two connecting wires for the stationary magnet s coil Small signal voltages are induced as the teeth of a trigger wheel made of a low magnetic reluctance steel pass through the magnetic field of a stationary magnet and coil Optical sensors use a rotor disk that separates LEDs from optical pickups Small openings or slits in the rotor disk allow light from the LEDs to energize the optical pickups Each time a slit aligns with the LEDs and optical pickups the pickup sends out a pulse Measurement Conditions e Raise the drive wheels off the ground and place the transmission in drive e Connect the test tool to the sensor according to the instruments Connection Help and start the engine e Monitor the VSS output signal at low speed while gradually increasing the speed of the drive wheels Test Tool Key Sequence MENU SELECT O En IGNITION ELECTRICAL SYSTEM SCOPE MULTIMETER VEHICLE DATA INSTRUMENT SETUP 2 SENSORS MENU SELECT GENERAL SENSORS OXYGEN SENSOR irs DUAL OXYGEN SENSOR F5 TEMPERATURE SENSOR KNOCK SENSOR POTENTIOMETER Connect the test leads as displayed by the test tool s Connection He
153. o peak voltages should equal reference voltage d Cni dul Tas an hd Je CES dm nic PU E Pa Voltage drop to ground should not exceed 400 mV The lower horizontal lines should almost If the voltage drop is greater reach ground than 400 mV look for a bad ground at the sensor or ECU Signal frequency increases as the speed of the vehicle increases Specifications may vary Consult manufacturer s specifications Automotive Applications 5 33 8 Anti Lock Wheel Speed Sensor ABS Magnetic The ABS computer compares the frequencies but not voltage levels from magnetic wheel sensors and uses this information to maintain wheel speeds while braking The frequency is directly related to the wheel speed and increases as the wheel speed increases Variable Reluctance Sensors do not require a separate power connection and have two connecting wires for the stationary magnet s coil Small signal voltages are induced as the teeth of a trigger wheel made of a low magnetic reluctance steel pass through the magnetic field of a stationary magnet and coil Measurement Conditions e Raise the vehicle off the ground e Key OFF Engine OFF Disconnect the wheel speed sensor from the vehicle s wiring harness Connect the test tool to the wheel speed sensor connector and rotate the wheel or e Engine RUNNING Back probe the connector leading to the wheel sp
154. o test efficiency of the catalytic converter The signal amplitude from the trailing sensor will increase when the efficiency of the catalytic converter declines over years The difference in voltage amplitude from the sensors is a measure for the ability of the catalytic converter to store oxygen for the conversion of harmful exhaust gases Measurement Conditions for the Oxygen Sensor Test e Hun the engine until the oxygen sensor is warmed to at least 600 F 315 C in closed loop Use jumper leads or back probe to make connection at the sensor wiring connector e Run the engine at idle while increasing engine speed Test Tool Key Sequence for the Temperature Sensor Test i MENU SELECT O s F5 IGNITION ELECTRICAL SYSTEM SCOPE MULTIMETER VEHICLE DATA INSTRUMENT SETUP 2 SENSORS MENU SELECT GENERAL SENSORS OXYGEN SENSOR ffs F5 TEMPERATURE SENSOR KNOCK SENSOR POTENTIOMETER Connect the test leads as displayed by the test tool s Connection Help and shown in Figure 5 5 OK Start the temperature sensor test now 5 12 Fluke 98 Users Manual Figure 5 5 Testing a Dual Oxygen Sensor ST8123 Catalytic Converter OK Catalytic Converter Efficiency poor Figure 5 6 Example Result of a good and bad working Catalytic Converter Automotive Applications 5 13 3 Temperature CTS Coolant Temperature Sensor and IAT Intake Air Temperat
155. ocate an authorized service center visit us on the World Wide Web http www fluke com or call Fluke using any of the phone numbers listed below 1 800 443 5853 in U S A and Canada 31 402 678 200 in Europe 1 206 356 5500 from other countries Appendixes APPENDIX 7E Terminology TERM DESCRIPTION ABS Antilock Brake System AC Alternating Current AC Coupling A mode of signal transmission that passes the dynamic AC signal component to the input INPUT A or INPUT B but blocks the DC component Useful to observe an AC signal that is normally riding on a DC signal e g charging ripple Acquisition The process of gathering measuring data into the test tool s memory Acquisition Rate Alternating Current The number of acquisitions performed per second An electrical signal in which current and voltage vary in a repeating pattern over time Amplitude The difference between the highest and lowest level of a waveform Attenuation The decrease in amplitude of a signal Bottom Display Auto Range Activates an automatic adaptation of the test tool to the input signal in amplitude timebase and triggering Backlight Light that illuminates the test tool s display from the back of the LCD Baud Rate Communication parameter that indicates the data transfer rate in bits per second BNC Coaxial type input connector used for INPUT A and INPUT B The lower part of the display
156. oltage can indicate a defective diode and discharge the battery RECTIFIER DIODE TEST Three phase alternators use three pairs of diodes to rectify output current These diodes are typically found in an insulated heat sink or rectifier bridge A diode must pass current in one direction and block it in the other If a diode is shorted it will pass current in both directions If it is open it will block current in both directions To test a diode for an open or a short circuit touch one test lead of the instrument to the diode lead and the other lead to the heat sink or alternator frame Then reverse the test leads The instrument should show continuity in one direction but not in the other If continuity is indicated in both directions the diode is shorted If continuity is not indicated in either direction the diode is open CHARGING FIELD CONTROL TEST A voltage regulator controls alternator output by adjusting the amount of current flowing through the rotor field windings To increase alternator output the electronic voltage regulator allows more current to flow through the rotor windings If the battery is discharged the regulator may cycle the field current on 9096 of the time This will increase output If the electrical load is low the regulator may cycle the field current off 9096 of the time to decrease output Depending on the vehicle type the signal may be a pulsewidth modulated square wave or a fixed voltage level 5 82 Flu
157. onfirm your connection Result The test tool automatically scales and displays the waveform on the screen 2040 2ms DIV MULTIMETER RPM TRIGGER n SET HWIZUNE 1 720 4 NORMALI ZERO Do At Turn the RPM potentiometer and watch the result on the screen T Press or and change the dividing factor accordingly Then watch the RPM number change accordingly 1 DIS waste spark 2 conventional ignition system etc Tutorial 2 17 SECONDARY IGNITION SINGLE ON DIS The test tool s Ignition function optimally displays the ignition signal and automatically calculates all relevant ignition parameters such as spark voltage rpm burn time and burn voltage Exercise Measure the simulated Secondary DIS Ignition signal from the Demo Board For setting DIS refer to Vehicle Data Setup on page 2 4 Press the MENU key to open the selection Menu Use the arrow keys to highlight IGNITION menu SENSORS AIR FUEL IGNITION Press SELECT to confirm your selection ELECTRICAL SYSTEM IGNITION MULTIMETER VEHICLE DATA INSTRUMENT SETUP Use the arrow keys to highlight IGNITION MENU SECONDARY EXC ADVANCE DWELL Press SELECT to confirm your selection SECONDARY ignition test is activated Connection Help A message on the display asks you to connect the Secondary Pickup to INPUT A and around the spark plug wire and to connect the COM input to engine ground For
158. or to adjacent fuel lines Slide the probe tip onto the probe tip adapter and connect the Probe to your ScopeMeter Notice that the groundwire is shorter than the signal wire in order to have the weight of probe and cable on the groundwire and not on the signal wire The piezo element may not bounce or rattle on the line or make contact to other fuel lines or any other material close by Caution The piezo adapter is made of a ceramic material and may be damaged if it falls on a concrete floor Be careful Automotive Applications 5 93 Some general suggestions to keep in mind Always position the piezo pickup on the fuel line at about the same distance frome the Injector Place the pickup on a straight part of the fuel line Do not place it on a bent part of the line Always compare results with signals performed on a good engine to get acquainted with the signal shape Always compare signals at the same engine speed Pump timing is critical and should occur within 1degree of crankshaft rotation The test tool is not a pump timing device The test tool can be used to reveal ECU problems concerning timing and delivery start 5 94 Fluke 98 Users Manual 25 Diesel RPM Measurements and Diesel Injection Pattern Display Test Tool Key Sequence Set DIESEL in the VEHICLE DATA MENU as follows menu Displays the main MENU EN f 7 5 AIR FUEL v IGNITION ELECTRICAL SYSTEM SCOPE MULTIMETER VEHICLE DATA INST
159. ording Unlike PLOT READINGS in this function there is no cursor available to scan the displayed plot 4 8 Fluke 98 Users Manual INTERMITTENT RECORD This recording function can help you find faults that occur during short periods of time Such a fault also called an intermittent can for example be a signal that disappears occasionally due to a poor connection or broken wire The test tool display has about 9 5 horizontal divisions to show a waveform The length in time of the waveform which depends on the time base setting may be too short to capture a faulty signal However the INTERMITTENT RECORD function can store the signal waveform for a period that corresponds to 1280 divisions in a cyclic memory endless loop The length in time equals 1280 times the time base setting For example if the time base is set to 100 ms per division the recorded waveform is 128 seconds long From that time on the first waveform sample will shift out of memory to make space for a new sample and so forth until you stop recording by pressing any key Do the following to start INTERMITTENT RECORD Select and start the test you want to record Press to enter the RECORD menu Move the highlight to INTERMITTENT RECORD HIN TRENDPLOT FLIGHT RECORD Press to select INTERMITTENT VIEW RECORDED SIGNAL RECORD If there is still existing record data in memory press to preserve this data or press to overwrite this d
160. ory press Press to enter the RECORD menu RECORD PLOT READINGS MIN MAX TRENDPLOT INTERMITTENT RECORD VIEW RECORDED SIGNAL FLIGHT RECORD to preserve this data and cancel recording or press r to overwrite this data and start recording 17 0 ky SPARK VOLTAGE 909 184 ms BURN TIME 1 40 kv BURN VOLTAGE 20 V 21 3 SPARK VOLTAGE 925 200 BURN TIME 1 20 BURN VOLTAGE 20k 2ms DIV SECONDARY CONVENTIONAL VEHICLE PARADE FAST RANGE DATA UPDATE MOVE aSkY 2ms DIV Press any key to stop recording Ignition Single Cylinder Display Display during FLIGHT RECORD Figure 4 5 Normal Test Display and FLIGHT RECORD Display Using the Additional Capabilities 4 11 Viewing the storeds results from FLIGHT RECORD Do the following to view the results from FLIGHT RECORD If the FLIGHT RECORD function is busy recording press any key to stop recording and perform step 4 in the next procedure skip steps 1 through 3 In all other cases perform next steps through Use the same procedure as used for Viewing the stored results from PLOT READINGS on page 4 5 to enter the VIEW RECORDED SIGNAL function steps 1 through 3 peres pieni 2 SEARCH Use these keys to browse through the recorded Screens 20 0 kv SPARK VOLTAGE VIEW S3 1 68 ms BURN TIME
161. ould minimize clamp the voltage spike due to the self inductance of the solenoid when switching it off The test is done with the shielded test lead on INPUT A we J ELECTRICAL SYSTEM KS SOLENOID AND DIODE Function Keys and Result Screens 202 v maximum HOLD 200 mnmum 0 0 92 i 300 104 SOLENOID AND DIO REPEAT TEST Press to DUM Sen SOLENOID AND DIODE e voltage rs VOLT FA F3 Press to repeat the test Press to measure resistance F2 For the voltage test F1 key this is a single shot measurement which means that the signal is displayed only once To get a new test result press the F3 key and reapply the signal from the solenoid This screen displays the voltage across the solenoid MAXIMUM Indicates the maximum voltage measured MINIMUM Indicates the minimum voltage measured 2 This screen displays the resistance in ohms measured across the solenoid Using the Automotive ScopeMeter Test Tool 3 35 Voltage Drop Use this menu option to find high resistance or a loss of voltage across switches wiring and connectors Loss of voltage voltage drop in wiring harnesses and connectors will cause poor performance of the connected device NOTE A voltage drop occurs only when current flows through the wiring or connector This test performs a Min Max TrendPlot like test as described in Chapter 4 However the
162. r charges the test tool s NiCad Battery Pack from a standard 12V dc cigarette lighter outlet e Charging Adapter PM9087 021 optional This adapter charges the test tool s NiCad Battery Pack from a standard 24V dc cigarette lighter outlet 1 Refer to Chapter 6 USER MAINTENANCE for battery replacement instructions 2 Refer to Appendix 7C for information about local versions Minimizing Signal Noise In general noise pickup is minimized when you use the test tool on its internal battery power Using the STL 90 Shielded Test Leads will help in noise rejection 1 12 Fluke 98 Users Manual CHARGING THE BATTERY A WARNING TO AVOID ELECTRICAL SHOCK USE A BATTERY CHARGER THAT IS AUTHORIZED FOR USE WITH THE AUTOMOTIVE SCOPEMETER TEST TOOL Use the following procedure to charge the battery pack and to power the test tool 1 Connect the Power Adapter Battery Charger to line voltage 2 Insert the Power Adapter Battery Charger low voltage plug into the Power Adapter connector of the test tool You can now use the test tool while the NiCad batteries charge slowly If the test tool is turned off the batteries charge more quickly During operation when the batteries are low a blinking battery symbol 2 appears on the top right of the display When this occurs there is about 10 minutes of operating time left 3 The Power Adapter Battery Charger uses a trickle charge for the batteries so no damage can occur if you lea
163. rbance less than 10 of full scale Frequency range E lt 0 1 V m E 1 V m E 3 V m 25 MHz 1 GHz Stand alone N A N A N A With STL90 N A 50 mV div 100mV div 100 mV div 200 mV div For conditions not specified in tables 1 2 and 3 a susceptibility effect of more than 1096 is possible N A Not Applicable Multimeter Mode Table 4 Susceptibility no visible disturbance Frequency range E lt 0 1 V m E 1V m E 3V m 10 kHz 25 MHz Stand alone with 100 mV 300V 100 mV 300V 300 mV 300V STL90 Table 5 Susceptibility no visible disturbance Frequency range E lt 0 1 V m E 1 V m E 3V m 25 MHz 1 GHz Stand alone 100 mV 300V 100 mV 300V 100 mV 300V With STL90 100 mV 300V 100 mV 300V 300 mV 300V Table 6 Susceptibility disturbance less than 10 of full scale Frequency range E lt 0 1 V m E 1V m E 3V m 25 MHz 1 GHz Stand alone N A N A N A With STL90 N A N A 100 mV N A Not Applicable 7 10 Fluke 98 Users Manual Automated Oxygen Sensor Test Table 7 Susceptibility no visible disturbance Frequency range 10 kHz 25 MHz Stand alone with STL90 filter adapter E lt 0 1 V m 50 mV div 10 V div E 1V m 50 mV div 10 V div E 3V m 50 mV div 10 V div Table 8 Frequency range 25 MHz 1 GHz Susceptibility no visible disturbance E lt 0 1 V m E 1V m
164. red signal event CURSOR 2 Press to select the cursor GENERAL SENSORS VIEW F5 you want to move CURSOR 1 B5 uU A CURSOR 2 9 0 v 15 9ms5 29 00 8 Use the left right arrow keys to move the selected cursor to the location where you want to read the sample 2 v values PRINT A Press this key to copy the 8 a AON F4 screen to the connected mes printer This is only possible sk e seamen mum HUS via the optionally available RS232 cable F2 F3 F4 F5 BACK m Press this key to exit from this display and return to the normal F1 test display 4 10 Fluke 98 Users Manual FLIGHT RECORD This function stores up to 40 successive screen snapshots in memory You can view the last 40 or less if memory is not full screens stored in the record memory This function is suitable for repetitive signals such as ignition patterns not for intermittents The time base setting possible during FLIGHT RECORD is 200 ms per division or faster time base lt 200 ms division If the current time base is slower than 200 ms per division FLIGHT RECORD records at 200 ms per division Perform the following to start the FLIGHT RECORD function 9 Select the function and start the the test you want to record RECORD 3 lt RECORD n m m 4 ul Move the highlight to FLIGHT Press to select FLIGHT RECORD If there is existing data in mem
165. result is not stored in memory You can restart the test by pressing the F3 REPEAT TEST key re J le VOLTAGE DROP Function Keys and Result Screen 9 080 OOO max AUTO 300 mn 280 MAX MIN 8 0m 3s 68s 748 0mV VOLTAGE DROP 46 REPEAT TEST IRANGE Press to repeat the test P Indicates the actual voltage drop MAX Indicates the maximum voltage drop during the test MIN Indicates the minimum voltage drop during the test MAX MIN Indicates the difference between the maximum and minimum voltage drop during the test 3 36 Fluke 98 Users Manual Stepper Motor J ELECTRICAL L 5 STEPPER MOTOR This menu option performs the same as STEPPER MOTOR in the AIR FUEL MENU Refer to the description of this menu option on page 3 21 Using the Automotive ScopeMeter Test Tool MENU SCOPE MENU SENSORS SINGLE INPUT SCOPE AIR FUEL DUAL INPUT SCOPE IGNITION REL COMPRESSION UNSYNC ELECTRICAL SYSTEM REL COMPRESSION SYNC SCOPE MULTIMETER VEHICLE DATA INSTRUMENT SETUP When Using the Scope e Use the scope function if you want to simultaneously measure two ne on INPUT B DUAL INPUT SCOPE waveforms one on INPUT A and o e RELATIVE COMPRESSION allows cylinders you to compare the compression of all Fluke 98 Users Manual Using Single and Dual Input Scope Use SINGLE INPUT SCOPE if you want
166. rm up the engine In Chapter 5 Automotive Applications you can find the conditions required for each application Make sure that the test tool settings correspond with the data of the vehicle to be tested To verify this look at the display when you switch the power on The display shows VEHICLE DATA MENU with a list of settings that must correspond with the vehicle to be tested Also see the section Changing VEHICLE DATA MENU CYCLES 4 BATTERY 12V IGNITION CONV Figure 3 1 Display at Power On Vehicle Data on page 3 57 If you use other probes or test leads than those supplied with the test tool you may have to change the setup for probes and test leads See Changing Test Lead Setup on page 3 62 Select the desired test from the menu The Online Help information displayed above the menu can help you make the right choice from the menu Before the test starts a message is displayed indicating the probes or test leads to use and how to connect them see Figure 3 2 Use the eo TRIGGER INPUT Clans the Secondary Pickup 0000 15 around the high voltace coil wire and connect the ground lead to ground com Clamp the RPM90 Inductive TRIGGER Pickup around the spark plus wire of cylinder 1 mie connect the COM input to sround OK Figure 3 2 Connection Help correct probe s or test leads and connect them to the corr
167. rsor operation is not possible for the actual measurement the test tool beeps to alert you Two cursors vertical lines appear on the display The left cursor is named CURSOR 1 the right CURSOR 2 CURSORS AUTO OFF Press to set CURSORS ON or 160 mV k 10 0ms 9 4 88 V F2 CURSOR 2 Select the cursor you want to move 1 or 2 i 4 2ms DIV Left right arrow keys move the CURSORS s cursor CURSOR CURSOR BACK 1 The top display shows a rectangular box containing readings related to values at the cursor positions See Figures 4 7 and 4 8 Figure 4 7 Cursor display single output CURSOR 1 _ CURSOR 2 160 mV Sample value at CURSOR 2 position Sample value at CURSOR 1 position Difference between the Time difference sample values at between CURSOR 1 CURSOR 1 and and CURSOR 2 CURSOR 2 positions positions Figure 4 8 Cursor reading for single input use Using the Additional Capabilities 4 15 When you use cursors in DUAL INPUT SCOPE the display also gives cursor 20 0 1 1 Samy DC 1 1 readings for INPUT There is no Ar 150 mV k eeg may A 69 98 B 24 0mV B 98 0mV difference in sample values given at the cursors as seen in single input mode See Figure 4 9 and 4 10 eo f80ns DIV CURSORS Ae CURSOR 1 CURSOR BACK OFF Figure 4 9 Cursor display
168. rte tug Gasoline Diesel Ignition Systems eene Conventional DIS Coil on Plug Electrical System Voltages eee 6 12 24V Use gasoline settings for alternative fuel tests The accuracy of all measurements are within of reading number of counts from 18 C to 28 C Add 0 1 x specific accuracy for each C 18 C or gt 28 Display eode trat Foil Compensated Super Twisted Liquid Crystal 84 84 4 7 diagonal ReSolUtiOn reo 240 x 240 pixels CORE AS diii at ee del gui eee User adjustable Backlight 5 Ires Cold Cathode Fluorescent CCFL Tube High Brightress ite eee eb ends 50 cd m A External Power Requirements Internal Battery Pack esee NiCad 4 8V nominal Operating Time 2 i uie nete ene ted derives Typically 4 hours Power Adapter Battery Charger Charging TIme uiii rot epe DA Een Typically 16 hours Alternate 4 Alkaline C cells non rechargeable External 8 to 20V DC 5 W typical via 5 mm jack THE MINUS VOLTAGE IS CONNECTED TO COMMON WHEN USING A POWER SUPPLY THAT IS NOT DOUBLE INSULATED CONNECT COMMON TO PROTECTIVE GROUNDING Memory back up battery sssssseeeeeeeeeneeneen nennen CR2032 save screens for up three years with main batteries removed 7 8
169. s Manual Oxygen Sensor test with RECORD gt INTERMITTENT RECORD The Intermittent Record function is an endless loop recorder that allows you to continuously record the oxygen sensor screens for over 21 minutes The oxygen sensor is useful for emission system analysis which allows easy fuel and ignition system diagnosis 17 Start the OXYGEN SENSOR test as described above 2 Press to display the RECORD menu 4 RECORD SELECT PLOT READINGS MIN MAX TRENDPLOT irs FLIGHT RECORD F5 VIEW RECORDED SIGNAL If there is still record data in memory that may be cleared perform step 3 to start recording YES Press to start recording F1 OXYGEN SENSOR VIEW CURSOR 1 CURSOR 2 248 nV BO zB mv 4 168 nV 280mV E s s w o t CURSOR BACK lt a SEARCH PRINT 1 a 2 Press to scroll backward through the record Press to scroll forward through the record You can turn the test tool off and read this record later via RECORD gt VIEW RECORDED SIGNAL function See Chapter 4 for more information Automotive Applications 5 11 2b Dual Oxygen Sensor Dual Lambda or Dual Both oxygen sensors provide an output voltage that represent the amount of oxygen in the exhaust stream respectively before and after the catalytic converter The leading sensor signal is used as feedback for mixture control The signal from the trailing sensor is used by the vehicle computer t
170. se GM Toyota Honda 10 1 Filter Adapter This adapter raises the input impedance of your Automotive ScopeMeter to 10 It also eliminates noise over 4 kHz It is useful for high impedance low voltage measurements ATOM ATION PIE HUE 10 1 Bandwidth p ey 4 kHz Input impedance eeeeeeeeeneeennnee 10 MQ in parallel with 3 5 pF eben 1 in parallel with 30 pF Maximum input voltage ssseeessseeeeeenenneeenneenneen nennen nnne 300V Appendixes 7 13 Optional Accessories abbreviated specifications Current Probe 90i 610s C rrent ranges dne edie ke 0 5 to 100 A dc or ac peak 0 5 to 600 A dc or ac peak Working Voltages clamps jaws to ground 600V ac rms Installation Category II ACGUL OV on i cras en m cus wirt 296 to 3 596 range dependent Temperature Probe TR90 Temperature Range 40 to 200 40 to 392 ACCUIACY mm m 196 0 5 C Response Time 30 seconds in static oil environment Diesel Probe Set DPS90 Piezo Pickup Diameter nnne 6 00 mm Useful Bandwidth 5 3 1 2 eere RENI Enter DC to 4 kHz Input Impedance at DC 10 MQ in parallel with 12 pF Cable toa orit le otc tte 2 5 m 8 feet Optically isolated RS 232 Adapt
171. se readings behave as FREQUENCY changes Do the following to start the PLOT READINGS recording function Select and start the test you want to record REcorp Press to enter the RECORD menu RECORD MIN MAX TRENDPLOT 3 Move the highlight to PLOT READINGS VIEW RECORDED SIGNAL SELECT les Press to select F5 The Automotive ScopeMeter test tool displays a message when there is still an existing record in Heo eae will be lost 1 r re record memory that has to be overwritten before Ees wo recording can start This will not affect the 15 memory storage locations Press to preserve the record and cancel recording or press to overwrite the record and start recording 4 4 Fluke 98 Users Manual When this function starts a plot will start for each reading See the following example for a single cylinder ignition test The figure on the left shows the normal test display with the readings at the top The figure on the right shows the display of each reading in the same order from top to bottom as displayed in the left figure 17 0 spark VOLTAGE SECONDARY SINGLE SS RPM 9 RP 909 25 0k 17 6k M PRRK HOLTAGE 184 ms BURN TIME Ln rM S 1 40 kv BURN VOLTAGE 1 0 lebky UU EL pen 20 V 840 RPM 2 00ms 1 69ms BURN TIME ee T Amel 1 KS T 60k VOLTAGE
172. sensors typically have only two wires and generate their own signal voltage HALL EFFECT DISTRIBUTOR TRIGGERING A Hall effect switch has a stationary sensor and a rotating trigger wheel and requires a small input voltage to generate an output voltage When a shutter blade enters the gap between the magnet and the Hall element the output voltage changes This signal is sent as a square wave to the ignition module to trigger the coil OPTICAL DISTRIBUTOR TRIGGERING An optical signal alternator uses the light from a light emitting diode LED to strike a photo transistor and generate a voltage signal The trigger wheel is a slotted disc that passes between the LED and the photo transistor Measurement Conditions e f are diagnosing a NO START CONDITION connect the test tool as described in the test tool s Connection Help and crank the engine Look for presence of a signal If there is a signal the problem is somewhere else If there is no signal or the amplitude is small look for a defective sensor or a wiring problem e f the engine runs connect the test tool as described in the test tool s Connection Help and start the engine Run the test at idle and at different rpm s and under various load conditions Fluke 98 Users Manual Test Tool Key Sequence mV Vv e t mV w MENU AIR FUEL IGNITION ELECTRICAL SYSTEM SCOPE MULTIMETER VEHICLE DATA INSTRUMENT SETUP SENSORS MENU GENERA
173. set to No grey parts are not printed Tip Highlight this menu option and press to get extended information about the settings needed for a connected printer Using the Automotive ScopeMeter Test Tool 3 61 OPTIONS MENU INSTRUMENT SETUP OPTIONS OPTIONS MENU CONNECTION HELP ON LANGUAGE ENGLISH CONNECTION HELP Can be set On default or Off This setting is used to enable or disable display of connection help information during selection of a test LANGUAGE This setting is used to select the local language or English for the information text display This option is not available if only one language is implemented 3 62 Fluke 98 Users Manual Changing Test Lead Setup This menu option is used to configure the test tool for probes and test leads used for measurement It is also used to calibrate a 10 1 test lead to match INPUT A or INPUT B When you use the standard test leads and probes supplied with the test tool you do not need to make changes to the default setup Use this menu option to make the setup for non standard test leads or probes INSTRUMENT SETUP TEST LEAD INPUT A TEST LEAD INPUT A CURRENT PROBE 90i 610s SEC PICKUP 10000 1 TEMP PROBE TRIO TEST LEAD 11 1 CALIBRATE TEST LEAD TEST LEAD INPUT INPUT B TEST LEAD SETUP 11 1 TEST LEAD 1 CALIBRATE TEST LEAD CURRENT PROBE Defines the type of current probe or its sensitivity in mV A SEC PICKUP
174. sor receives a 5 volt reference signal from the electronic control unit and sends back a variable frequency signal that is equivalent to the mass of air entering the engine The output signal is a square wave with amplitude fixed at 0 and 5 volts Frequency of the signal varies from about 30 to 150 Hz Low frequency equals low air flow high frequency equals high air flow AIR FLOW METER Potentiometer Air flow meters have a spring loaded vane that pivots on a shaft as it opens and closes in response to a volume of incoming air A variable resistor potentiometer is connected to the vane at its pivot point causing the output voltage signal to change as the air vane angle changes When the vane is wide open the ECU knows that a maximum amount of air is being drawn into the engine and when it is closed a minimum amount of air is entering the engine The ECU responds by increasing or decreasing fuel injector pulse width accordingly The electronic control units use these signals to calculate fuel injector pulse width or ON time and ignition timing Engine coolant temperature engine speed manifold air temperature and the air flow sensor signals enable the computer to make the necessary calculations and adjustments 5 38 Fluke 98 Users Manual Measurement Conditions e Connect the test tool to the output signal from the air flow sensor or meter e Start the engine and allow the engine to idle Slowly accelerate the engine while watching
175. ss to display the RECORD menu tee Press to select PLOT READINGS If a message is displayed telling that memory data will be lost press F1 YES to start recording The recording function disables the battery save feature when no key entry is made for 5 minutes Wait until the test tool is automatically turned off Then the NiCad batteries are completely discharged Depending on the condition of the NiCad batteries the discharging can last up to 8 hours When the test tool is turned off connect the Power Adapter Battery Charger PM8907 to the test tool and the local line power Charge for more than 21 hours Repeat steps 1 through 9 once more 6 4 Fluke 98 Users Manual REPLACING AND DISPOSING OF BATTERIES A WARNING TO AVOID ELECTRICAL SHOCK REMOVE THE TEST LEADS PROBES AND BATTERY CHARGER BEFORE REPLACING THE BATTERIES Disconnect the test leads probes and battery charger both at the source and at the test tool Separate the test tool from its holster Locate the battery cover on the bottom rear Loosen the two screws with a flat blade screwdriver Lift the battery cover away from the test tool oO OW Remove the NiCad battery pack or alkaline batteries type KR27 50 or R14 from the battery compartment ee NOTE Ni Cd This instrument contains a Nickel Cadmium battery Do not dispose of this battery with other solid waste Used batteries should be disposed of by a qualified recycler or hazardous
176. t full accuracy and displays all three as graphs Uses automatic vertical scaling and horizontal time compression for hands off recording from a minimum of 60 seconds to a maximum 32 days full screen The horizontal time compression process records data until the screen is full Then it selects the greater maximum and the lesser minimum between each pair of readings These readings are then compressed to fill half the screen The process then repeats itself until up to 32 days have passed Intermittent Record Monitors and records signal continuously for a full 128 screens single channel or 64 screens dual channel of data Intermittent recording is initiated on entry and is terminated at any time by pressing any key on the instrument except ON OFF Time base ranges 20 ms per division and slower gt 20 ms division Flight Record Records up to 40 successive screen snapshots in memory Preserves the last 40 screens in an endless loop fashion Time base ranges 200 ms per division and faster lt 200 ms division Appendixes 7 7 Screen Memories Save or Recall Memo ene ct eset ite 15 complete display screens including setup Test Lead Calibration DC adjustment for 10 1 test leads only General Specifications Functional on These Engine Types Number of Cylinders 1 2 3 4 5 6 8 Engine Stroke te a e E e i OH De Re e E 2 or 4 stroke F el Types ig ea o
177. t in the potentiometer e Reconnect the movable arm to the rear axle and adjust the ride height sensor to the specifications found in the vehicle s service manual Test Tool Key Sequence D menu MENU SELECT SENSORS mV AIR FUEL IGNITION ELECTRICAL SYSTEM SCOPE MULTIMETER VEHICLE DATA INSTRUMENT SETUP 2 SENSORS MENU SELECT GENERAL SENSORS OXYGEN SENSOR irs DUAL OXYGEN SENSOR F5 TEMPERATURE SENSOR KNOCK SENSOR 9 Connect the test leads as displayed by the test tool s Connection Help and shown in Figure 5 14 OK 2 Starts the sweep test Automotive Applications 5 27 Figure 5 14 Testing a Ride Height Sensor 332 v maximum HOLD 1 96 WY 100m POTENTIOMETER e REPEAT TEST Figure 5 15 Result Display of a Voltage Test on a Ride Height Sensor 5 28 Fluke 98 Users Manual Ride Height Sensor Vehicle shocks fully extended vehicle height at maximum Weight added to the vehicle causing vehicle height to lower Potentiometer on height sensor reducing output voltage Lower voltage is interrupted by the electronic control module causing the air suspension to extend Specifications may vary Consult manufacturer s specifications Automotive Applications 5 29 7 Vehicle Speed Sensor VSS Magnetic Hall Effect and Optical The VSS output signal is directly proportional to vehicle speed The ECU controls torque co
178. t to check if all cylinders have equal compression From the compression graph on the display you cannot identify cylinder numbers because there is no synchronization signal used for the test In order to identify cylinder numbers use synchronized SYNC RELATIVE COMPRESSION Synchronization is done with the Inductive Pickup RPM 90 on the spark plug wire close to the spark plug Cylinder display is in firing order IMPORTANT The relative Compression test can only be used on reciprocating piston engines This test cannot be used on rotary Wankel engines Also on odd fired engines you may not be able to correctly interpret the rsults Also see the Relative Compression application in Chapter5 SCOPE REL COMPRESSION UNSYNC REL COMPRESSION SYNC Fluke 98 Users Manual Function Keys and Result Screens RPM during cranking Cylinder 1 for the SYNCED relative compression test Cylinders are displayed in firing order Press to display the vehicle data menu Press to use a current probe or a shielded test lead on INPUT A Maximum compression cylinder 28 5 REL COMPRESSION SYNC VEHICLE PROBE REPEAT DATA MEN TEST HOLD 0 Low compression cylinder Y Press to repeat the test Figure 3 8 Relative Compression Test on a 4 Cylinder Engine 1 WAIT This is displayed in the following cases e when you enter the test u
179. tentiometer and to the ground of the potentiometer For this measurement the battery is connected to the Demo Board Connect the red test lead to INPUT A the red alligator clip to TP 3 potentiometer slider and the black alligator clip to the GND of the Demo Board lt Rotate the SWEEP potentiometer on the board completely counterclockwise cay ES Press OK to confirm your connection 2 10 Fluke 98 Users Manual Result fao m ud Turn SWEEP potentiometer from completely counterclockwise to clockwise and watch the result The waveform shows a rising edge 412 v maximum HOLD 400 mv minimum sy Fat CN 188ms DIV POTENTIOMETER e REPEAT TEST Reset the test tool for a new measurement by pressing REPEAT TEST Turn SWEEP potentiometer counterclockwise The waveform shows a falling edge 412 v maximum HOLD 400 mv ninm Sy CIV ooa A 188ms DIV POTENTIOMETER e REPEAT TEST RANGE Tutorial 2 11 OXYGEN SENSOR TEST The test tool automatically adjusts for any type of oxygen sensor automatically shows the signal output of the sensor and calculates the Maximum Average and Minimum values Exercise Measure the simulated Oxygen sensor output signal from the Demo Board Steps Press the MENU key to open the selection Menu D Use the arrow keys to highlight AIR FUEL menu SENSORS IGNITION ELECTRICAL S
180. ter test tool common connections BNC shields of INPUT A and INPUT B and the black 4 mm banana jack COM are connected internally via self recovering fault protection The input connectors have no exposed metal and are fully insulated to protect against electrical shock The black 4 mm banana jack COM common can be connected to a voltage above earth ground for isolated electrically floating measurements and is rated up to 600V rms above earth ground Vill Fluke 98 Users Manual USING YOUR AUTOMOTIVE SCOPEMETER TEST TOOL SAFELY Follow safe servicing practices as described in your vehicle service manual To ensure that you use your Automotive ScopeMeter test tool safely follow the safety guidelines below e Avoid working alone e Disconnect the power and discharge all high voltage capacitors before connecting the Automotive ScopeMeter test tool to make resistance measurements e Inspect the test leads for damaged insulation or exposed metal Check test lead continuity Replace damaged leads before use e Do not use the Automotive ScopeMeter test tool if it looks damaged e Select the proper function and range for your measurement e Use caution when working above 60V dc 42V peak or 30V rms Such voltages pose a shock hazard e When using the probes keep your fingers away from probe contacts Keep your fingers behind the finger guards on the probes e Disconnect the live test lead before disconnecting the common test lead
181. the pattern for each cylinder s ignition cycle in the engine s firing order For example if the firing order for a given engine is 1 4 3 2 the scope will display the ignition cycles for each cylinder as shown starting with cylinder number 1 then 4 then 3 and then 2 DISTRIBUTORLESS IGNITION SYSTEM DIS Single Most distributorless ignition systems use a waste spark method of spark distribution Each cylinder is paired with the cylinder opposite to it 1 4 or 3 6 or 2 5 The spark occurs simultaneously in the cylinder coming up on the compression stroke and in the cylinder coming up on the exhaust stroke The cylinder on the exhaust stroke requires very little of the available energy to fire the spark plug The remaining energy is used as required by the cylinder on the compression stroke The same process is repeated when the cylinders reverse roles Automotive Applications 5 61 Measurement Conditions e Follow the test tool s instructions for probe selection and connection information e Engine RUNNING Test the ignition system under varying load and speed conditions to verify component integrity Spark plugs ignition wires and other secondary ignition components may fail when a high demand is present Run these tests under load on a dyno or road test to accurately determine system malfunctions Test Tool Key Sequence OK At power on check the settings in the VEHICLE DATA MENU The following steps 2 to 9 describe
182. the type of vehicle you are measuring PARADE PARADE displays the SINGLE ignition pattern of all cylinders in Firing order SINGLE displays the ignition pattern of one single cylinder FAST Turns all readings off to UPDATE make the measurement Faster and more reliable For more information press F4 ABOUT BACK PAGE 2 INFO Figure 1 14 Information About the Function Keys Press this key to read further information on page 2 BACK Press this key to return to the test display or press the key again Introducing your Automotive ScopeMeter Test Tool 1 19 MEASUREMENT CONNECTIONS INPUT B IHE A TRIGGER IEC 1010 1 III ZAN300V Xy ALL INPUTS 600V ZN300V 5 Xy WARNING RISK OF SHOCK OR FIRE SEE WARNING ON REAR 577727 Figure 1 15 Measurement Connections INPUT A Red INPUT A is used for all single channel measurements sometimes combined with use of the other inputs You may need various test leads and adapters depending on the type of measurement selected INPUT B Grey INPUT B is used in conjunction with INPUT A e For ADVANCE measurements e For DUAL OXYGEN SENSOR measurements e n SCOPE functions you can use the test tool as a dual trace oscilloscope with INPUT A and INPUT B connected COM TRIGGER Used as external trigger for probes with dual banana plugs such as the RPM90
183. timeter Functions section Testing Temperature 14 Fluke 98 Users Manual 5 8044 Figure 5 7 Testing a Temperature Sensor 031 Sas BIV TEMPERATURE SENSOR SET OHM ZERO Figure 5 8 Result Display from a Temperature Sensor Test Automotive Applications 5 15 Coolant and Intake Air Temperature Sensors NTC Thermistors Temperature HOT Temperature is decreasing causing the resistance to increase Temperature COLD Temperature sensors are normally Temperature sensor readings are typically Negative Temperature Coefficient made over a long period of time thermistors NTC Specifications may vary Consult manufacturer s specifications 5 16 Fluke 98 Users Manual 4 Throttle Position Sensor TPS Potentiometer and Switched Throttle position sensors TPS are a common source of faults in today s on board computers Some people think of a TPS as a replacement for an accelerator pump on throttle body or port fuel injected engines but it is much more A TPS tells the on board computer how far the throttle is open whether it is opening or closing and how fast As the resistance of the TPS changes so does the voltage signal returning to the computer Potentiometer Sensor Variable position sensors provide a dc voltage level that changes as the arm on a variable resistor potentiometer is moved A TP
184. tion If Fluke determines that the failure was caused by misuse alteration accident or abnormal condition of operation or handling Fluke will provide an estimate of repair costs and obtain authorization before commencing the work Following repair the product will be returned to the Buyer transportation prepaid and the Buyer will be billed for the repair and return transportation charges FOB Shipping Point 7 20 Fluke 98 Users Manual THIS WARRANTY IS BUYER S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE FLUKE SHALL NOT BE LIABLE FOR ANY SPECIAL INDIRECT INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES INCLUDING LOSS OF DATA WHETHER ARISING FROM BREACH OF WARRANTY OR BASED ON CONTRACT TORT RELIANCE OR ANY OTHER THEORY Since some countries or states do not allow limitation of the term of an implied warranty or exclusion or limitation of incidental or consequential damages the limitations and exclusions of this warranty may not apply to every buyer If any provision of this Warranty is held invalid or unenforceable by a court of competent jurisdiction such holding will not affect the validity or enforceability of any other provision Fluke Corporation or Fluke Industrial B V P O Box 9090 P O Box 680 Everett WA 7600 AR 98206 9090 Almelo USA The Netherlands Service Centers To l
185. tion the test tool automatically optimizes vertical range timebase and trigger settings thus creating a stable display mV When you press one of the arrow keys the test tool switches to manual control of range timebase and vertical range and trigger settings Press this key to toggle between automatic and manual control of range and trigger settings Use this key if you cannot get a stable display using manual control 3 40 Fluke 98 Users Manual INPUT A Control Functions When you are in SINGLE or DUAL INPUT SCOPE you can control the following INPUT A functions SCOPE e INPUT INPUT SINGLE a B SHOT TRIGGER MOVE A 6 2 fa 6 SCOPE INPUT A e GLITCH RANGE A Press to BACK ON AC INVERT return to the piene c Press to turn 40 ns Press to invert the INPUT A glitch detection on or off signal waveform Press to select DC or AC coupling The GLITCH function enables you to capture and display events such as spikes that occur between two samples on INPUT A which would otherwise not be visible INPUT B is turned off when the GLITCH function is activated The events can be glitches or other asynchronous waveforms that are 40 ns or wider GLITCH detection is not possible in the DUAL INPUT SCOPE function DC Coupling allows you to measure and display both the DC and AC components of a signal For example you can measure and display battery charging voltage with
186. tion is open or closed If you select OPEN the test tool beeps when the tested connection is open If you select CLOSE it beeps when the tested connection is closed 3 14 Fluke 98 Users Manual This screen displays volt and time values of the signal PEAK PEAK Indicates the difference in voltage between the lowest and highest value of the displayed waveform FREQUENCY Indicates the number of signal periods waveform repetitions per second Signal period 20 ms 0 02s Frequency 1 0 02 50 Hz lt 2Q ms gt N Signal period DUTY CYCLE Indicates the ratio between the negative part of the signal and its period time expressed as a percentage Duty cycle 15 ms 20 ms x 100 75 Pulse with 15 ms PULSE WIDTH Indicates the width of the negative part of the signal 2 This screen displays the measured resistance in ohms This is displayed when the resistance is outside the test tool s measurement range This occurs when the resistance of the sensor is too high or the connection to the sensor is interrupted or open This screen displays the continuity of a connection as follows 0 N n If the connection is open C L 0 e E e lf the connection is closed Using the Automotive ScopeMeter Test Tool 3 15 Oxygen Sensor This menu option is used to test an oxygen sensor also called sensor or Lambda sensor The test is done with the shiel
187. to use a single signal INPUT B is turned off Use DUAL INPUT SCOPE if you want to simultaneously measure two signals em SCOPE gt SINGLE INPUT SCOPE DUAL INPUT SCOPE Function Keys and Result Screen Press to display the function key labels for INPUT A control Soom DC 1 1 18 1Y 0 1 1 auro 4 1 ix mM 2ms DIV SCOPE INPUT INPUT SINGLE Press to select dd SHOT TRIGGER MOVE A the arrow keys for ranging or moving the INPUT A signal Press to display the function Press to display the function key key labels for INPUT B control labels for trigger control Press to display the function key labels for single shot control Figure 3 7 SCOPE display Using the Automotive ScopeMeter Test Tool 3 39 oS XR eu Automatic ranging and signal tracking is on Pressing sets automatic ranging and signal tracking on and off If on AUTO is displayed if off AUTO is extinguished INPUT B zero level INPUT A zero level Timebase range Timebase zero line trigger event Trigger icon Indicates the trigger source a indicates INPUT A the trigger slope L indicates negative slope and the trigger level the vertical position of the icon INPUT B range setting and probe identification This label displays OFF when INPUT B is turned off INPUT A range setting and probe identification Making an Easy Setup When you enter the scope func
188. tool Carrying Case Contents 1 Automotive Hard Carrying Case C98 2 Automotive ScopeMeter test tool in Yellow Holster installed with NiCad Battery Pack PM9086 011 3 1 Power Adapter Battery Charger PM8907 80 4 for UK 240V 50Hz 1 for rest of Europe 230V 50 Hz 3 for USA and Canada 120V 60 Hz 6 for Japan 100V 60 Hz 2 7 for Australia 240V 50 Hz 8 for other countries selectable for 115V and 230V Vi Fluke 98 Users Manual 2 Shielded Test Leads red and grey STL90 2 Ground Leads for STL90 Test Leads black 2 BNC Extension Leads for STL90 1 Ground Lead unshielded black 1 Ground Extension Lead unshielded black 2 Filter Adapters blue 10 1 Demo Board with 9V battery 11 1 Accessory Container 12 1 Secondary Pickup being one of the following models country dependent 12a CAP90 2 with three HEI High Energy Ignition Adapters 12b PM9096 01 13 1 Inductive Pickup RPM90 14 3 Alligator Clips red grey and black 15 3 4 mm Banana Adapters grey red and black 16 3 2 mm Adapters red grey and black 17 3 Back Probe Pins red grey and black 18 2 Keys for Case 19 1 Soft Case C75 20 1 Users Manual Check the contents for completeness noting whether any damage has occurred during shipment If something in the kit is damaged or missing contact your distributor immediately A WARNING READ SAFETY BEFORE USING THE AUTOMOTIVE SCOPEMETER TEST
189. ttery flow or source voltage z Injector On Time Specifications may vary Consult manufacturer s specifications ST8054 Figure 5 30 Testing a Throttle Body Injection System Automotive Applications 5 51 Current Controlled peak and Hold Fuel Injector Throttle Body and Port Fuel Injection Systems Peak voltage caused by the collapse of the injector coil when current is reduced Current reduced enough to keep hold in winding activated Driver transistor turns on pulling the injector pintle away from its seat initiating fuel flow Battery voltage or source voltage supplied to the injector Injector On Time Driver transistor turns off ending fuel flow Specifications may vary Consult manufacturer s specifications 5 52 Fluke 98 Users Manual 12 Mixture Control Solenoid MC Pulse Width Computer controlled systems use a mixture control solenoid and stepper motor to control fuel metering along with throttle position sensors and oxygen sensors which help control injection times by sending signals back to the ECU The MC solenoid is duty cycled by a solid state grounding switch in the ECU When the solenoid is activated metering rods are forced downward restricting fuel flow When the ECU opens the circuit the restriction in the main metering system is removed thus providing a rich mixture Measurement Conditions e Engine R
190. ult smooth setting for the active test 406 ws INJECTION PULSE 402 ms INJECTION PULSE 388 21 1 v maximum 1004 B 100 80 80 68 68 MB ELT RUNE X AB xo A cx RES oo o MT 0 2 2 2 n 7204 i 2ms DIV 20V 2ms DIV SMOOTH 8 SMOOTH 8 BACK lt a SMOOTH EE o NORMAL BACK lt a SMOOTH Fa mom o NORMAL yas c with EJ b off aa a with a a on Figure 4 11 Signal Displayed with Smooth Filter Off and On Chapter 5 Automotive Applications SENSORS 4 s tete den dashed eta ee et tob d 5 3 3 Manifold Absolute Pressure MAP 5 3 2a Oxygen Sensor Lambda O2 Zirconia and Titania 5 6 2b Dual Oxygen Sensor Dual Lambda or Dual O2 5 11 3 Tempetal re osito oe Ce ees Pa Pea 5 13 4 Throttle Position Sensor TPS Potentiometer and Switched 5 16 5 Crankshaft Camshaft Position CPS 5 21 6 Ride Height Position Potentiometer 5 26 7 Vehicle Speed Sensor VSS Magnetic Hall Effect and Optical 5 29 8 Anti Lock Wheel Speed Sensor ABS Magnetic 5 33 AIR EUEL n traut ela eet bns Pp et 5 37 9 AirFlowSensors ee 5 37 10 Exhaust Gas Recirculation EGR 5 43 11 Fuel Injectior E
191. up to INPUT A and around the Spark Plug Wire The test tool s COM input must be connected to the engine ground For this measurement we use the red test lead since the Demo Board is not able to generate a high voltage secondary signal Connect the red test lead to INPUT A the red alligator clip to TP 2 SEC IGN and the black alligator clip to the GND connection of the Demo board Press OK to confirm your connection Fluke 98 Users Manual Result 182 kw SPARK VOLTAGE AUTO 270 mm 1 92 ms BURN TIME 1 20 kv BURN VOLTAGE 20k 1 A s l 2ms DIV SECONDARY DIS a VEHICLE RPM SENS FAST DATA CHER LOW UPDATE The Next Step RECORD PN m v 4 M Press to display the Record selection menu Use the arrow keys to highlight RECORD INTERMITTENT RECORD PLOT READINGS MIN MAX TRENDPLOT FLIGHT RECORD INTERMITTENT RECORD Press SELECT to confirm your selection INTERMITTENT RECORD is activated 18 RECORDED SIGNAL If there is previous record data in memory a message will appear on the display If you press YES recording starts If you press NO recording is cancelled record memory will be lost Are you sure VES NO is Present contents of the Tutorial Do To stop the Recording press any key SECONDARY SINGLE VIEW CURSOR 1 CURSOR 2 200 00V 25 SN s
192. ure Sensor Most temperature sensors are Negative Temperature Coefficient NTC thermistors a resistor made from a semiconductor material The electrical resistance changes greatly and predictably as temperature changes The resistance of the NTC thermistor goes down as its temperature goes up and its resistance goes up when the temperature goes down Measurement Conditions for the Temperature Sensor Test e urn the key ON Engine OFF With the sensor wiring harness connected measure the output voltage engine COLD or e Run the engine and monitor the voltage decrease NTC as the engine warms e his same test sequence can be performed while monitoring the resistance value of the sensor The sensor must then be disconnected Test Tool Key Sequence for the Temperature Sensor Test MENU SELECT menu F5 ti IGNITION ELECTRICAL SYSTEM SCOPE MULTIMETER VEHICLE DATA INSTRUMENT SETUP 2 SENSORS MENU SELECT GENERAL SENSORS OXYGEN SENSOR les DUAL OXYGEN SENSOR F5 KNOCK SENSOR Connect the test leads as displayed by the test tool s Connection Help and shown in Figure 5 7 OK 2 Start the temperature sensor test now F or OHM ra You should disconnect the sensor before you press F2 to F2 test the sensor resistance Use the optional TR90 temperature probe to measure the actual coolant or intake air temperature See Chapter 3 Using Mul
193. utputs Measurement Conditions for the MAP Sensor Test e Key ON Engine OFF with vacuum applied to the sensor s vacuum input using a hand pump to simulate the vacuum or e Engine RUNNING monitor the signal at idle while increasing rpm Test Tool Key Sequence for the Digital MAP Sensor Test MENU SELECT AIR FUEL les 4 IGNITION F5 ELECTRICAL SYSTEM SCOPE MULTIMETER VEHICLE DATA INSTRUMENT SETUP OXYGEN SENSOR DUAL OXYGEN SENSOR TEMPERATURE SENSOR KNOCK SENSOR POTENTIOMETER Connect the test leads as displayed by the test tool s Connection Help banner and as shown in Figure 5 1 SENSORS MENU SELECT mV GENERAL SENSORS OK Starts the Digital MAP sensor test 1 If necessary use the arrow keys for ranging You can use INTERMITTENT RECORD to log the test results o 5 4 Fluke 98 Users Manual ST8042 Figure 5 1 Testing a MAP Sensor FREQUENCY 216 v PEAK PEAK 840 x cycle v 304 purse WIDTH v ey 5 9 5 N gt 4 i E B S80ms DIV GENERAL SENSORS usus CONTINUITY OHM OPEN CLOSE MOVE Figure 5 2 Result Display from a Map Sensor Test The INTERMITTENT RECORD function is a powerful means to watch the signal over time This function gives you time to activate the sensor while recording is in progress and then stop recording to display the result See the example for Oxygen Sensor on page 5 1
194. ve it charging for long periods e g through the weekend Typically a 16 hour recharge provides the maximum use of 4 hours Saving Battery Life When operated on batteries no adapter connected the test tool conserves power by shutting itself down If you have not pressed a key for 5 minutes or if the battery level is too low the test tool beeps and displays a message This message prompts you to turn off the test tool or to continue If you do not press a key during the next 5 minutes the test tool turns itself off automatically Automatic power shutdown will not occur during recording Introducing your Automotive ScopeMeter Test Tool 1 13 USING THE KEYS Keypad Overview Display area for the Function Key Labels 3 s ex Lame lo 87 DPE DDO Figure 1 10 Keypad Overview FREEZ 1 14 Fluke 98 Users Manual Key Descriptions ITEM KEYS DESCRIPTION These are the Function Keys The function assigned to each key is indicated by the Function Key Label displayed above the key on the bottom display RECORD Displays the menu for recording functions These functions plot and store test data over a long period of time Performs one of the following actions e Moves up and down through menu choices e Ranges amplitude up and down e Moves a waveform up and down e Adjusts the trigger level whe
195. vents een eee e Pda iren Ese 5 67 Print Grey c eoa diate ceed Late Rete DUE E a E REVERSE Eds 3 60 Printe Menu og Are eei WEN ERE 3 60 Printer RR ERR Six E Reis NE Rada 3 60 PririterType use aate hoe e e RR Spee Wa AA BE 3 60 Probe Identification 3 39 PIOD6S cama mn ec ees ante ek then t S pss E ee 3 3 P lse Width eis aree due pU Aue Lv Eu dern 3 52 Index 1 5 R Ranging ios oY iere bbb EUER LU ele 1 15 8 12 Record Functions n 1 14 4 2 Relative 1 3 3 45 5 73 Replacement Parts 7 14 Replacing the 6 4 Resetting the Test 1 7 Resistance 2 7 3 49 Ride Height 5 5 26 Ripple Voltages 2 nb eR neck ab be hed hb UR 3 31 RMS Voltage eras RR RE ene 3 48 Road Test ee oe eee OEDIPUS dori kun Y d ae 1 3 RPM aa es Stas ks bh aks 3 51 S Safety Characteristics 2 2 0 0 eee tee 7 1 Safety Grounding rp tere Batya te m REM Edu UU ah 1 20 Safety Precautions 0 00 ete teens VI Save Recalli5 5 e
196. ver time Exercise Record the minimum and maximum injection times of the simulated injection signal from the Demo Board Steps Press the MENU key to open the selection Menu Use the arrow keys to highlight AIR FUEL reno SENSORS IGNITION ELECTRICAL SYSTEM OPE Press SELECT to confirm your selection AIR FUEL VEHICLE DATA INSTRUMENT SETUP Use the arrow keys to highlight FUEL AIR FUEL MENU INJECTOR POTENTIOMETER STEPPER MOTOR OXYGEN SENSOR Press SELECT to confirm your selection GENERAL sensors FUEL INJECTOR test is activated Connection Help A message on the display asks you to connect the red test lead from INPUT A to the signal wire of the injector and to connect the ground lead to the vehicle ground For this measurement connect the red test lead to INPUT A the red alligator clip to TP 1 INJECTION and the black alligator clip to the GND connection of the Demo board Press OK to confirm your connection 2 24 Fluke 98 Users Manual Result 520 ms INJECTION PULSE 320 maximum 1004 60 40 20 8 2204 2ms D1 FUEL INJECTOR e VEHICLE DATA MOVE The Next Step Press to display the RECORD menu Use the arrow keys to highlight MIN MAX RECORD PLOT READINGS s ies S FLIGHT RECORD P SELECT to confirm your selection INTERMITTENT RECORD irs ress 65 MIN MAX TREND
197. when you do so that automatic ranging is turned off See 5 Press 2 to reactivate automatic ranging AUTOmatic ranging is on for both horizontal timebase see and vertical range see 3 Readings calculated from the signal The F1 Function Key Label indicates that a VOLT and TIME measurement is active So the following readings represent either a voltage or a timing value Signal waveform Graticule Graticules mark the horizontal and vertical divisions Using the Automotive ScopeMeter Test Tool 3 13 USING SENSOR FUNCTIONS MENU SENSORS MENU EGE EN GENERAL SENSORS AIR FUEL OXYGEN SENSOR IGNITION DUAL OXYGEN SENSOR ELECTRICAL SYSTEM TEMPERATURE SENSOR SCOPE KNOCK SENSOR MULTIMETER POTENTIOMETER VEHICLE DATA INSTRUMENT SETUP General Sensors This menu option is used to test a variety of sensors The test is done with the shielded test lead on INPUT A new EE GENERAL SENSORS Function Keys and Result Screens 757 gt FREQUENCY AUTO 2 440 v PEAK PEAK 500 gt cycle v AUTO 3 660 PULSE WIDTH 2 4 4 g Oks SAVE on ous GENERAL SENSORS Bos CONTINUITY TT OHM OPEN CLOSE GENERAL SENSORS VOLT AND CONTINUITY TIME OPEN CLOSE GENERAL SENSORS vor Teno OHM OPEN Used to measure volt and time values of the signal Used to measure resistance Used to test whether a connec
198. where the function key menu is listed Coil On Plug Ignition System An ignition system without a distributor where each spark plug is integrated with an ignition coil Continuity Instrument setup to check wiring circuits connectors or switches for breaks open circuit or short circuits closed circuit Contrast This setting expressed as a percentage determines the contrast ratio between display text or graphics and the LCD background 0 is all white 100 is all black Fluke 98 Users Manual TERM DESCRIPTION Conventional Ignition System Ignition system that uses a distributor Cursor A vertical line kind of ruler that you can place on the and move horizontally to measure values at certain points of the waveform DC Direct Current DC Coupling A mode of signal transmission that passes both AC and DC signal components to the input INPUT A or INPUT B of the test tool See also AC Coupling Default Setup The setup that exists as long as there are no changes made to the settings Diesel Probe A test probe that has a pickup element to measure the pressure pulse in the diesel fuel pipe It converts fuel pipe expansion into voltage Differential Measurement of the difference between the waveform Measurement delta sample values at the positions of the two cursors Diode Direct Current An electrical device that allows current to flow in one direction o
199. x O D 2 r4 D 3 gt lt ajo FLUKE 98 Automotive ScopeMeter series i Users Manual 4822 872 00786 September 1996 Rev 3 3 97 1996 1997 Fluke Corporation All rights reserved Printed in the Netherlands All product names are trademarks of their respective companies Fluke 98 Users Manual Contents 1 INTRODUCING YOUR AUTOMOTIVE SCOPEMETER TEST TOOL INTRODUCTION coos cece ev elu Reiten iiri QUICK ake fhe kN S veri eiu POWER SOURCES CHARGING THE BATTERY USING THE KEYS uc anes aticn keh eis see Se aol READING THE DISPLAY MEASUREMENT CONNECTIONS GROUNDING GUIDELINES TUTORIAL INTRODUCTION e ne ess LE Le ea wen bes ety iA POWER ON OFF BACKLIGHT CONTRAST VEHICLE DATA SETUP BATTERY VOLTAGE TEST RESISTANCE MEASUREMENT POTENTIOMETER TEST OXYGEN SENSOR TEST GENERAL SENSORS TEST RPM MEASUREMENT SECONDARY IGNITION SINGLE ON DIS INJECTION TEST 0 cadua enei i pi RECORD PLOT
200. your Automotive ScopeMeter Test Tool 1 7 At power on the test tool displays the model identification data Press any key to display the vehicle data menu as shown in Figure 1 5 VEHICLE DATA MENU 0 amp Default settings CYLINDERS 4 You can change the CYCLES 4 settings to match with BATTERY 12V _ your vehicle IGNITION DIS Sets the test tool for the number of cylinders of the vehicle OK SELECT Press the F1 key to accept the Press the F5 key to change displayed settings the highlighted selection Figure 1 5 Vehicle Data Menu at Power On Adjusting the Display Contrast Press this key and keep it depressed until you can clearly read the display Resetting the Test Tool If you want to restore the test tool settings as delivered from the factory do the following Turn the test tool off by pressing the key NOTE The following action clears all memory data Keep this key depressed while you turn the power on with the key Release the F5 key You will hear a double beep to indicate that the Master Reset has been executed 1 8 Fluke 98 Users Manual Performing a Navigation Exercise Subsequently follow steps and in Figure 1 6 to select a test via menu control 1 MENU Cines th SENSORS x 2 en the Main Menu gAIRZFUEL Move highlighted IGNITION menu option ELECTRICAL SYSTEM Put the highlight SCOPE on

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