Component Tests User Manual - Snap-on
Contents
1. 4 5 4 Using Zoom The ZOOM buiton Figure 4 27 lets you change the magnification of frozen data and appears in place of the SNAPSHOT button when data collection is paused 24 Operations Performing Tests En Ax Bx Thx Jx 64x 128 256 Zoom Out TES 10 Vidivw al Figure 4 27 Sample zoom drop down menu GQ To zoom frozen test screens 1 Select ZOOM A dropdown menu displays Figure 4 27 2 Select an option from the menu The screen changes to reflect your selection and the on screen Zoom Cursor Line displays Figure 4 28 122 10 Widiv ak Figure 4 28 Zoom cursor line 3 To see a point of interest in detail a Select REVIEW b Use the left lt and right gt arrows move the Zoom Cursor Line to the point of interest c Select ZOOM gt 1x 4 5 5 Using Cursors The Cursors button Figure 4 29 lets you make digital amplitude frequency and time measurements of frozen waveforms On live data cursors can be used as reference points and to make frequency and time measurements EA APS ONS Figure 4 29 CURSORS button 25 Operations Performing Tests P To use the cursors 1 Select Cursors Two vertical cursor lines display on screen Figure 4 30 Figure 4 30 Sample cursors 2 Press the right and left arrows to move the selected cursor line 3 Press Y Y to change the active cursor 4 Press N X when you are finished setting cursors A confirmatio2. Figure 3 10 Sample selected test window P To deselect a window e Press N X When deselected the background and title text of the deselected window change colors P To view additional information e Press the up A or down Y arrow in the selected window Figure 3 11 to display more information 11 Navigation Navigating Multi Window Screens gSa DUTY CYCLE TEST i CONNECTOR VIEW HARNESS SIDE BACKPROBING allow cam ACT CNTRL CONNECTOR Black known good ground EE F Duty cycle should increase with Engine load E ehicle should be road tested for accurate f Figure 3 11 Thumb Pad instruction indicating more information NOTE O When the arrow button displays in some windows selecting it expands the window vertically Figure 3 12 DUTY CYCLE TEST CONECTOR Connect test leads VIEW HARNESS SIDE BACKPROBING Yellow cam ACT CNTRL CONNECTOR Black known good ground Duty cycle should increase with Engine load Vehicle should be road tested for accurate 1 CAM ACT SUL Gray OR Brown Wack OR White Black P To exit a screen e Press N X from any window until you return to the main menu 12 4 1 Operations This section describes features that are accessible from the Component Tests button Service Bulletins Previous Vehicles Component Tests Online Info New Vehicle ID Power User Tests Features amp Benefits How To Figure 4 1 Sample main menu The Component Testing menu
3. Figure 4 1 provides the following options Service Bulletins Previous Vehicles Component Tests Online Info New Vehicle ID Power User Tests Features and Benefits How To Service Bulletins is an optional database of factory engine and engine performance repair updates available on a CompactFlash card Contact your sales representative for details Online Info requires an internet connection Component Tests The following is an outline of basic component testing operations 13 Operations Identifying the Test Vehicle 1 Identify the vehicle lIdentify the test vehicle or select from a list of previously identified vehicles See Identifying the Test Vehicle on page 14 2 Select a component test Select a vehicle specific component for testing See Selecting a Component Tesi on page 17 3 Connect to the vehicle Follow the on screen instructions to connect the MODIS unit to the vehicle See Connecting to a Test Vehicle on page 19 4 Perform the test Follow the on screen instructions to set up test and evaluate test results See Performing Tests on page 20 Figure 4 2 Basic operations 4 2 Identifying the Test Vehicle Component tests vary according to vehicle and system Before you can a list of available component tests you must identify a specific vehicle system Two options are available for identifying a vehicle e New Vehicle ID e Previous Vehicles 4 2 1 New Vehicle
4. units 30 Index signal zero offset 37 Snapshot 8 23 24 26 setup 27 taking 26 27 sweep 38 symbols 1 terminology 2 Test screen 6 tests Power User 43 tips 44 threshold 37 Auto Threshold Select ATS 37 Manual Threshold Select MTS 37 tool help 3 toolbars 7 10 Tools button 30 tools button options grid 32 ignition system 31 inverse colors 34 scales display 33 units 30 trigger display 33 view options Digital 21 Full Digital 21 Full Graph 21 RPM 21 Split Screen 21 viewing component information 41 46
5. ID The New Vehicle ID option requires that you make selections from a series of menus to identify the vehicle to be tested Operations Identifying the Test Vehicle P To identify a new test vehicle 1 From the main menu select Component Tests gt Component Testing gt New Vehicle ID Figure 4 3 TOWS Ll ing modulor diognostie inlormotion system Component Testin Service Bulletins Previous Vehicles Component Tests New Vehicle ID J PUWET r mE Features amp Benefits Figure 4 3 Sample New Vehicle ID selected The Region menu displays Figure 4 4 Mo modular diagnostic information system Figure 4 4 Sample Region menu 2 Select the region The Manufacturer menu displays Figure 4 5 LESA yt ee Manufacturer medular diognostic informoalion system ACURA 7 Figure 4 5 Sample Manufacturer menu 3 Select a manufacturer The System Type menu displays Figure 4 6 15 Operations Identifying the Test Vehicle TRANSMISSION Figure 4 6 Sample System menu 4 Select a system Continue to select from the menus to complete the vehicle identification If you need to change a selection press the left arrow to go back one step at a time NOTE O As you make selections vehicle identification data displays in the Status bar Figure 4 7 at the bottom of the screen When you have finished identifying the vehicle a confirmation message displays Figure 4 8 Press Y t
6. MC Dwell and Pulse Width There are two threshold options Auto Threshold Select ATS automatically picks a threshold level in the middle of the range in which the waveform travels ATS defaults to a falling edge Manual Threshold Select MTS lets you manually pick a signal level and direction rising or falling to be used as a reference point This is typically used if ATS picks a level that does not give the desired result P To change the threshold level 1 Select Threshold The Threshold menu displays Figure 4 54 37 Operations Performing Tests 25 05 f Figure 4 54 Threshold menu sample 2 Select an option P To use the Manual Threshold option 1 Select Threshold gt Manual Threshold Select The Manual Threshold Select dialog box displays Figure 4 55 Manual Threshold Select Signal Min Threshold Signal Max Slope Use arrows to adjust level and slope Press N when done Figure 4 55 Sample Manual Threshold Select dialog box The Signal Min and Max display to the left and right of the Threshold value for reference Measuring the Min and Max may take a few seconds 2 Change the Threshold value and the Slope as needed NOTE O Threshold can only be changed to a value that is between the Min and Max of the signal 3 Press N X to exit the dialog box 4 5 13 Setting the Sweep Time The Sweep button on the lower toolbar sets the amount of time data displays across the screen f
7. V Sn A 1 DUO A a e o ee eC ee 1 o A a A 1 A O 2 Notesana Important Message Sisa a 2 POCO Ut Sussie disdads 2 Additonal Manta oat er rn I PERRO Pe A ee E 3 A A E 3 Soren La VO it ds 5 Component Information Screen ooccccccocccnncconncnnononcnnnonnnnnnnononnnnnonnnnnnnnnnnrnnrnnnnrrnnnnnnrnnrnnanennns 5 TOS DC Mr ii Aa 6 A ea a a a E setae 7 Man BOY oaren AN AA A A E AA A AA ean ete 10 Staus Bai aosa a E coe eee 10 Medi A 10 Navigating Multi Window SCreenS oooccccccccccncccnoncncnccnconnononcnnononacononnancnnnonnnnnnnnnnncnnnonanennnnancanos 10 COMPONENT TES IS o ad es et ais 13 ldentilying the Test Ve ld e Di 14 New Venice arder a 14 Previous Venice ali dorar a R 16 Selecting a Component TeSt occccccocnnocononcnnconononnnononnnnonnnnnnnnononnrnnnnnnnrnnnnnnnrnnonnnnrnronnnnrnnnonanennnnns 17 Connecting to a Test Venice eri iia 19 o AAA Pe E O EOS CCOO iaimbudeaneddunuhceledustiewckdnwasers 20 CHANGING VIEWS a o 20 PAUSING Dala iia da odia ico 23 FLOVIC WIND Ma A ATA A AA AC 24 Jono ZOO Mita alias 24 Ds A A A ince eee 25 TAKING SMa OS OS amero tocada 26 FSSC ING Galgos soei tutte oth ro 28 VEIN A aaa ite cena cate ae cae anh O eeedecnasedan tee easuteet 28 PPM AA acne tan dines tas usustanttalyiecomctaitunadte E 29 OSI OOO S ri Nata 30 Calbraion MI ladra 34 AdlUstina Channel Seng raras ir 34 Setting ME SWEEP MM o o ened 38 Seting UME Tilda iaa 39 Viewing Component Information ccccooccnncccnccnnccnonnnncnnnncnn
8. dgives on screen instructions for performing specific component tests along with drawings and tips 20 MINUTE CURRENT RAMP CLASSES provides an introduction to current ramp classes 44 Index Numerics 10 Minute Electronic Class 44 15 Minute Ignition Class 44 20 Minute current ramp classes 44 B battery pack power status 10 bold text 1 C changing views 20 channel control bar 34 component tests 13 identify test vehicle 14 connecting to a test vehicle 19 cursors 25 D display as 31 display trigger 39 41 display trigger control bar 39 F Features Benefits 43 G grid 32 H How To 44 identifying the test vehicle 14 ignition system 31 Illustrated Terms and Definitions 44 INFO component tests 13 features and benefits 43 how to 44 operations 43 inverse colors 34 making selections 10 45 manual conventions 1 3 manuals additional 3 messages 2 important 2 note 2 new vehicle ID 14 noise filter 35 No Start Basics 44 O O2 Sensor and Feedback System Analysis 44 P pause 23 peak detect 35 performing tests 20 Power User Tests See tests previous vehicles ID 16 print component information 43 test screens 30 printing 29 probe 36 procedures 2 review data 24 Safety ili iv safety information iii save 28 saving 28 scale 36 scales display 33 selecting component tesis 17 setup display as 31 grid 32 ignition system 31 inverse colors 34 scales display 33 trigger display 33
9. on screen Figure 4 16 Ll Diane Y vezes gas FREQUENCY TEST Connect test leads VIEW HARNESS SIDE BACKPROBING Yellow W55 Black WSS A WSS At 30 MPH frequency should be about B WSS HO ina Sweep a_i e i 30s mE 4 16 Sample test results 4 5 1 Changing Views The VIEW button lets you change the way data displays Available menu options depend on the selected test P To change screen views 1 Select VIEW A dropdown menu displays Figure 4 17 20 Operations Performing Tests Full Digital Full Graph TES CONNECTOR Split Screen jee VIEW HARNESS SIDE BACKPROBING CONNECTOR Figure 4 17 Sample VIEW menu Menu selections vary by test and include either RPM Digital and Full Screen or Full Digital Full Graph Split Screen and Full Screen 2 Select an option from the drop down menu The screen changes to reflect your selection Figure 4 20 through Figure 4 23 CONNECTOR ZEW HARNESS SIDE BACKPROBING a E al ee A ENG MAIN Relay FUSED PWR Pink Black ERES LIALELE TELELE TTT OFF 7 Figure 4 19 Sample Digital view 21 Operations Se ala ej CONNECTOR Full Graph VIEW HARNESS SIDE BACKPROBING PURGE Split Screen SOLENOID _ _ Full Screen mera ety cycle should be present Throttle may need to be opened to see Duty Figure 4 20 Sample Full Digital view wl 5 Era EHT _ Fun Digital Full Graph Split Screen fs 1 F
10. spikes and glitches for signals going in both positive and negative directions Filter minimizes unwanted noise in the Graphing Meter Auto Find picks the best scale to fit the selected signal pattern on the screen If run on the same channel as the trigger the trigger level is set halfway between the minimum and maximum values of the waveform Displayed Inverted Coupling AC Peak Detect Filter Auto Find Figure 4 50 Sample Channel Number menus NOTE O When testing with the Single Cylinder Ignition scope the Channel 1 Peak Detect option cannot be turned off 35 Operations Performing Tests P To display a different Channel 1 Select the Channel Number button from the Channel control bar The channel setup menu displays 2 Select Ch 2 or Ch3 or Ch4 gt Displayed The Channel Two Channel Three or Channel Four trace displays on screen and a check mark displays next to the Displayed option in the Channel attribute menu The check mark indicates that channel is on 3 Select additional channels and a corresponding Displayed attribute when available 4 Press N X to close the menu P To change channel setup 1 Press the Channel Number The channel setup menu displays 2 Select the channel you want to change Ch 1 Ch 4 3 Select the Peak Detect or Filter channel setup option Probe The Probe buiton lets you select a different test Figure 4 51 E Low Amps 20 Low Amps 40 100 psi
11. the Vehicle The vehicle identification process is the same as for vehicle testing See Identifying the Test Vehicle on page 14 for information 41 Operations Viewing Component Information 4 6 2 Viewing Component Information Once the test vehicle is identified you can select the component to test from the Component Testing menu The main body of the Component Information screen can contain one or more of the following e OPERATION gives you a general description of normal component operation e CONNECTOR displays the component connector with pinout and wire color information e LOCATION helps you locate the component and tells you where to test it e TECHNOTES gives you component test related tips for example common failures or faults as well as update or recall information P To select a component 1 Select Component Tests from the Component Testing menu The Component Tests menu displays the available components for the identified test vehicle modular diagnostic information system BARO PA SENSOR CKP CRANK SENSOR CMP SE ENSOR O OO CONTROL MOD L LOCATION ECM CONNECTOR PINOUT ECT M SENSOR hero t SOLENOID ICMAGNITER INJECTOR KNOCK SENSOR MAP SENSOR PGMFI MAIN RELAY Figure 4 4 62 Sample Component Tests menu 2 Select a component from the menu to open the submenu CMP SENSOR modelar diagnostic information syatem Pre OMPONENT INFORMATION Figure 4 63 Sa
12. way information displays SECONDARY IGNITION TEST 1 Ignition System MODIS can be used to view secondary Grid ignition waveforms n Trigger Display Scales Display CH1 yellow secondary coil adapter inverse Colors GND black secondary coil adapter lead _ Black clip known good ground gt LL i Save Data Figure 4 40 Tools button menu sample P To use tools 1 Select the Tools button A dropdown menu displays 2 Select one of the following options Units Ignition System Grid Trigger Display Scales Display Inverse Colors Units Selecting Units opens the Units dialog box Figure 4 41 which lets you change the displayed units of measurement for vacuum pressure and gas concentration Vacuum Pressure Concentration Display As kPa psi ppm IF actory Default Unite Division Full Scale Figure 4 41 Sample Units dialog box 30 Operations Performing Tests The Display As dropdown menu sets how the scale units display on the Scale button and in the Channel Status area There are three Display As scale unit options e Factory Default the Channel Status area displays the Units Division for all active channels and the Scale button displays the full scale value e Units Division the scale value for a major grid division is displayed in the Channel Status Area and the Scale button e Full Scale the scale value for the whole grid is displayed in the Channel Status Area and the
13. CTOR Both TP sensor signal voltages are low at WIEW HARNESS SIDE BACKPROBING dosed throttle and increase as the throttle opens TP sensor 1 determines the actual throttles valve position TP sensor 2 has a oltage that is more than twice that of TP sensor 1 at ide TP sensor 2 provides a backup value for TP sensor L A TPS 1 SIGNAL DkGreen B TPS5 2 REF SV LtBlue Black C TPS LLO REF Black D TPS 2 SIGNAL Purple Best test Location At the TAC motor TPS connector Component Location The TAC motor and the TPS are a single unit mounted on the throttle body Figure 3 2 Sample component information screens The main body of the screen may be divided into one or more of the following sections OPERATION gives you a general description of normal component operation CONNECTOR shows you what the component connector looks like and gives you pinouts and wire color information LOCATION Helps you locate the component and tells you where to test it TECHNOTES Gives you component test related tips for example common failures or faults as well as update or recall information when applicable 3 1 2 Tests Screen The Tests screen Figure 3 3 consists of the following sections Upper toolbar Main body Lower toolbar Status Bar The main body of the Tests screen consists of three sections Test Procedure window upper left contains connection and testing procedures Support window upper right contai
14. MOD LS Component Tests User Manual February 2013 ZEEMS308G Rev E Trademarks Acknowledgements Snap on Fast Track and MODIS are trademarks of Snap on Incorporated All other marks are trademarks or registered trademarks of their respective holders Copyright Information 2013 Snap on Incorporated All rights reserved Disclaimer The information specifications and illustrations in this manual are based on the latest information available at the time of printing Snap on reserves the right to make changes at any time without notice Visit our website at http diagnostics snapon com North America www1 snapon com diagnostics uk United Kingdom For Technical Assistance CALL 1 800 424 7226 North America CALL 44 0 845 601 4736 United Kingdom E mail DiagnosticsUKproductsupport snapon com United Kingdom For technical assistance in all other markets contact your selling agent Safety Information For your own safety and the safety of others and to prevent damage to the equipment and vehicles upon which it is used it is important that the accompanying mportant Safety Instructions be read and understood by all persons operating or coming into contact with the equipment We suggest you store a copy the book near the unit in sight of the operator This product is intended for use by properly trained and skilled professional automotive technicians The safety messages presented throughout this manual are
15. Scale button NOTE The Units dialog box can also be accessed from the Utilities menu located on the Tool Setup submenu as described in the MODIS M Display User Manual To change units 1 Select Tools gt Units The Units dialog box displays 2 Change the unit values as needed 3 Press N X to close the dialog box Ignition System Before ignition testing can begin select the ignition system type and relevant parameters NOTE The Ignition System option is only available in Ignition System tests Selecting Ignition System displays the Ignition System dialog box that lets you select the following for the test vehicle e Ignition Type e Cylinders e Firing Order e 1 Trigger Inductive RPM Pickup connection e Polarity e RPM Factor Ignition System lgnition Type Cyls Firing Order 1 Trigger 1 Trigger Coll connection is not used to view waveforms li is only for display of RPM when the 41 trigger ts connected to the coil wire Figure 4 42 Sample Ignition System dialog box 31 Operations Performing Tests The following ignition types and settings are available e Standard Coil The Inductive RPM Pickup connects to the coil wire on a distributor system Set the number of cylinders and cylinder firing order e Standard Plug The Inductive RPM Pickup connects to the plug wire on a distributor system Set the number of cylinders and cylinder firing order e Wasted Spark The Inductive RPM Pickup conn
16. Trigger Display When Trigger Display is not selected trigger position values only display when the trigger position button is selected on the lower toolbar P To display trigger values e Select Tools gt Trigger Display The Trigger values display in the bottom right corner of the test area Figure 4 44 Scales Display Select Scales Display to display the scale values on the graph P To turn Scales Display on e Select Tools gt Scales Display Figure 4 45 The scale values appear along the X horizontal and Y vertical axis of the graph Figure 4 45 Figure 4 45 Scales Display menu selection sample 33 Operations Performing Tests Inverse Colors Selecting Inverse Colors changes the color scheme This feature is useful for reducing the amount of ink used when printing P To change the color scheme e Select Tools gt Inverse Colors The color scheme changes Figure 4 46 pr D v GEBU TA 13 not hon a oe tt Oe pamm prer Tree Ph AAA LAA LAA 10 Viv pt AV OFF Baiting tor Trigger eo mm of 90 oh Sweep Displa Trig per 100 ms Figure 4 46 Inverse Colors menu selection sample 4 5 11 Calibration LED When you select a Diode Continuity Ohms or Pressure transducers test a message displays with calibration instructions Figure 4 47 Make sure 100 psi Pressure probe is connected to scope Chi but not the vehicle Press Y to perform probe calibration or N
17. Vac 100 psi Press 500 psi Press 5000 psi Press Ignition Probe Figure 4 51 Sample Probe menu To select a different test 1 Select the Probe button The Probe menu displays 2 Select an option The Probe button changes to indicate your selection Scale The Scale button displays the current units of measurement for the channel Scales can be adjusted for each channel P To select a measurement scale 1 Select the Scale button The Scale menu displays Figure 4 52 36 Operations 2 Performing Tests Figure 4 52 Scale menu sample Select an option The Scale button and the waveforms on screen change to reflect your selection Signal Zero Offset The Signal Zero Offset button moves the selected channel s zero 0 position up or down within the test display area P To move a channel s zero position ls Select the Signal Zero Offset The button changes appearance to indicate that the function is selected Figure 4 53 2 Press the up A or down Y arrows as needed to move the zero point If you have the Scales Display setting on you see the scale move along the left side of the screen along with your selected channel waveform otherwise you only see your selected channel waveform move on screen 3 Press N X to exit the Signal Zero Offset function Threshold The Threshold button changes the reference point on the waveform and is only used for calculating measurements like Frequency Duty Cycle
18. are provided to help prevent personal injury and equipment damage All safety messages are introduced by a signal word indicating the hazard level Indicates an imminently hazardous situation which if not avoided will result in death or serious injury to the operator or to bystanders Indicates a potentially hazardous situation which if not avoided could result in death or serious injury to the operator or to bystanders Indicates a potentially hazardous situation which if not avoided may result in moderate or minor injury to the operator or to bystanders Safety Information Important Safety Instructions Safety messages contain three different type styles e Normal type states the hazard e Bold type states how to avoid the hazard e ltalic type states the possible consequences of not avoiding the hazard An icon when present gives a graphical description of the potential hazard Example Risk of unexpected vehicle movement A e Block drive wheels before performing a test with engine running A moving vehicle can cause injury Important Safety Instructions For a complete list of safety messages refer to the accompanying safety manual SAVE THESE INSTRUCTIONS Table of Contents Sale ITO NINA OM i aa ina iii Safety Message COnventiOns ccccccsssseeccseeeceeceesceeeceeeeeeesaesceessauseeessaeeceeeaeaeeeessageeessuaeeessaaeess lil IMPOFANL Salely INS WUCTIONS a a A ia IV Fable Ob COMENTS rarose Aroca
19. ction The MODIS Component Tests module combines the strength of your MODIS Lab Scope and Graphing Multimeter with a powerful diagnostic database This software provides component tests and automatically configures the tool for a selected test Fa CAS E PEL SSE om ree HEEE EFFES in EF i HT F A DOT ia Mi m i i CEE z oes eke Figure 2 1 MODIS display device with Lab Scope Plug in The Component Tests module operates from the Lab Scope Plug in which uses standard safety banana jacks and is compatible with commonly available accessories The following chapters of this manual will cover navigation through the software module software operation accessories and replacement part Navigation This section provides MODIS Component Tests navigation information For information about navigating the MODIS unit refer to the MODIS Display User Manual 3 1 Screen Layout The Component Tests button on the main menu opens a Component Testing menu Selecting from the menu opens a submenu Figure 3 1 e Component Information e Tests Service Bulletins Previous Vehicles Component Tests Online Info New Vehicle ID Power User Tests Features amp Benefits How To 3 1 1 Component Information Screen The Component Information screen Figure 3 2 contains e Upper toolbar e Main body Navigation Screen Layout OPERATION CONNE
20. e Component Information e Multimeter and Scope Status Bar The status bar is located at the bottom of the screen This non selectable display area contains the test vehicle identification battery power status date and time Making Selections Use the following instructions to navigate the interface and make selections For related information see Toolbars on page 7 To make selections 1 Highlight a button menu option or window 2 Press Y Y to select To navigate the main body of a screen e Press the Thumb Pad arrows To exit a selection e Press N X Navigating Multi Window Screens The main body of the screens for both Component Tests and Component Information are divided into multiple windows 10 Navigation Navigating Multi Window Screens m no A 2 Connect test leads Yellow TPS 1 signal Black known good ground Key on Engine off voltage should be about i 3 Figure 3 9 Sample Component Tests Screen 1 Test Procedure window 2 Support window 3 Test Meter window P To select a window 1 Use the down Y arrow to move from the upper toolbar 2 Select a main body window When selected the background and title text of the window change colors Figure 3 10 DUTY CYCLE TEST CONNECTOR VIEW HARNESS SIDE BACKPROBING ellow cam ACT CNTRL CONNECTOR Mack known good ground TT A Duty cycle should increase with Engine load ED ehicle should be road tested for accurate
21. ects to a plug wire on a wasted spark distributorless system Set the number of cylinders cylinder firing order and polarity IMPORTANT Be sure the firing order and cylinder firing polarity values are correctly set up before using the Ignition Scope to test Wasted Spark systems e Direct The Inductive RPM Pickup connects to plug wire if applicable on a direct ignition system Set the number of cylinders and cylinder firing order e Other The Inductive RPM Pickup connects to a plug or a coil wire Set the RPM factor appropriate for the test vehicle NOTE The Ignition System dialog box can also be accessed from the Utilities Tool Setup menu Refer to your MODIS Display User s Manual for more information about Utilities P To change Ignition System settings 1 Select Tools gt Ignition System The Ignition System dialog box displays 2 Select the Ignition System values as needed 3 Press N X to close the dialog box Grid Select Grid to displays the background grid pattern on all graphing test screens P To turn the grid on e Select Tools gt Grid A grid appears in the background of the test area Figure 4 43 Figure 4 43 Sample grid 32 Operations Performing Tests Trigger Display Select Trigger Display to turn on the Trigger position values located in the bottom right corner of the test area Figure 4 44 NOTE O The Trigger Display option is not available in all tests Figure 4 44 po
22. falling If the signal does not cross the trigger threshold the screen does not update which lets you capture intermittent events The screen only updates when the signal meets your trigger selection Cyl triggers the Lab Scope from the RPM lead signal You can only adjust the time offset for this trigger type P To select a trigger type 1 Select the Trigger Type button A dropdown menu displays Figure 4 58 39 Operations Performing Tests Figure 4 58 Sample Trigger Mode menu 2 Select an option With the exception of None a submenu displays 3 Select Auto or Normal from the submenu Ifa Channel trigger Ch1 4 is selected a plus sign colored according to the channel it represents displays in the graph area Figure 4 59 F E rs i 74 Li F 7 z be i 20 Vidiw af Figure 4 59 Sample channel trigger position marker f the Cyl trigger is selected a white plus sign displays along the bottom of the graph area which represents the point in time and the level at which a cylinder will be triggered Figure 4 60 Figure 4 60 Sample Cy Trigger Position marker 4 When you are finished setting the trigger modes press N X to close the menu NOTE If you want to save the triggered event displayed on screen do not press Pause because that will show you data in the data buffer and the triggered event you are looking at may no longer be there if the buffer has wrapped P To save a triggered e
23. ings the next time you select Save 4 When you are finished setting preferences select the Save icon A confirmation message displays with saved data retrieval instructions Figure 4 38 G as om at a O to Fiii ew ie San an Press Y to continue Figure 4 38 Sample Data saved confirmation message 5 Press Y v to close the confirmation message 4 5 9 Printing The Print button lets you print the displayed screen Print menu options vary depending on your selected component and mode You can print the full screen or individual sections in full screen format Figure 4 39 Mela Tale E H a SECONDARY IGNITION TEST 1 SECONDARY IGNITION TEST 1 MODIS can be used to view secondary Test Iman eee nr Figure 4 39 Sample test screen print menu NOTE Selecting Inverse Colors from the Tools button menu before selecting a print option reduces the amount of ink used by your printer 29 Operations Performing Tests P To print 1 Select the Print button Figure 4 39 A drop down menu displays 2 Select a print option and press Y v The screen prints according to your printer settings Refer to the MODIS Display User Manual for printer setup details NOTE If you print using the infrared output on the top of the MODIS unit make sure it is pointed at the infrared input of the printer and that there is nothing in between them 4 5 10 Using Tools The Tools button Figure 4 40 lets you change the
24. is used with the Thumb Pad to review paused data The Position Indicator Figure 4 25 displays the position of the current frame e Zero denotes the frame when the data was paused e Frames captured before pausing are negative frames captured after are positive There are two ways to review frozen data e Manually e Automatically To manually review data 1 Select the Pause button 2 Select the REVIEW button 3 Use the right and left arrows to review data one frame at a time 4 Usethe up A and down Y arrows to review data a fraction of a frame at a time when possible NOTE You can not review fractions of frames in the Ignition Scope To automatically scroll paused data 1 With the REVIEW button selected press Y v again to display the menu of scroll options Figure 4 26 Manual Scroll l Auto Scroll Fasi i CONNECTOR Connect test Auto Scroll Slow J VIEW HARNESS SIDE BACKPROBING Vellow TOG 1 arna Figure 4 26 Sample scroll options 2 From the REVIEW menu select an Auto option Auto Scroll Fast automatically scrolls the paused data at full speed Auto Scroll Slow automatically scrolls the paused data at half speed 3 Press N X to close the menu The Position Indicator Figure 4 25 displays the position of the current frame Zero 0 represents the frame when data collection was paused Frames captured before pausing are negative frames captured after pausing are positive
25. le e Pressthe down Y arrow Using This Manual 1 1 3 1 1 4 Conventions Terminology The term select means highlighting a button or menu item using the Thumb Pad and pressing the Y Y button to confirm the selection Example e Select Reset The above statement abbreviates the following procedure 1 Navigate to and highlight the Reset button 2 Press the Y v button Note and Important Messages The following messages are used Note A NOTE provides helpful information such as additional explanations tips and comments Example NOTE For additional information refer to Important IMPORTANT indicates a situation which if not avoided may result in damage to the test equipment or vehicle Example IMPORTANT Do not force the CompactFlash card into the slot 1 1 5 Procedures An arrow icon indicates a procedure Example P To change screen views 1 Select View The drop down menu displays 2 Select an option from the menu The screen layout changes to the format you selected Using This Manual Additional Manuals 1 2 Additional Manuals Tools that work in conjunction with various hardware and software modules have separate manuals available for each of the modules 1 3 Tool Help Your unit has Tool Help containing reference and procedural information found in this and other tool related user s manuals From the main menu access Tool Help on the Utilities menu Introdu
26. mple component options 3 Select COMPONENT INFORMATION to open the Component Information screen 42 Operations Power User Tests OPERATION CONNECTOR CMP sensor is a digital hallflement sensor VIEW HARNESS SIDE BACKPROBING Which provides cylinder 1 position input bo ECM PCM for fuel injection amp ignition timing Control ECM PEM uses signal as a backup signal for CEP failure 1 CMP SIG Yellow 2 0MP Grown Vellow 3 16N Yellow Black LOCATION Best test Location Black 3 pin harness connector at CMP sensor located right side of Engine between power steering pump amp front CYL head Component Location Mounted behind upper timing belt pulley on front CYL head Figure 4 64 Sample Component Information screen 4 6 3 Printing Component Information 4 7 4 8 The Print button works the same for component information as for testing Only the options are different to reflect the types of component information displayed DMP sensor is a digital hall Element sensor H CONNECTOR WPROBING Which provides cylinder 1 position input to LOCATION ECM PCM for fuel injection amp ignition timing SCREEN Control e 1 ECM PCM uses signal as a backup signal for CKP failure 1 CMP SIG Yellow 2 CMP Browr Yellow 3 I6N Yellow Black Figure 4 65 Sample component information print menu See Printing on page 29 for more information Power User Tests The Power User Te
27. n message displays asking how you want to proceed using cursors 5 Press Y v or N X as desired NOTE Digital amplitude measurements only display when the screen is in pause mode ve To turn cursors off 1 Select Cursors 2 Press N X twice The cursor lines disappear 4 5 6 Taking Snapshots The SNAPSHOT button lets you capture data before and after a problem occurs while driving P To take a snapshot 1 Select the SNAPSHOT button A dropdown menu displays Figure 4 31 Figure 4 31 Sample SNAPSHOT menu 2 Select Manual The SNAPSHOT buiton blinks indicating that Manual Snapshot mode is ready for use 3 Press Y v to take a snapshot The Collecting Snapshot message displays indicating that Snapshot data is being collected Figure 4 32 26 Operations 4 Performing Tests Collecting snapshot Press Y to stop collecting ODE i eee save data now Press N to abort ss Figure 4 32 Sample Collecting Snapshot message When the Snapshot finishes saving a final confirmation message displays When the confirmation message disappears you are returned to the test screen with the blinking SNAPSHOT button still armed Stop using SNAPSHOT by pressing N X NOTE The saved snapshot can be retrieved from Saved Data Refer to the MODIS Display User Manual for Saved Data operating details Changing Snapshot Settings You can set up a snapshot in the following ways Adjust the
28. nfirmation message displays Figure 4 35 Min Max values are being reset Figure 4 35 Sample Reset confirmation message When the reset is complete the confirmation message disappears 4 5 8 Saving Data The Save button lets you store data in memory P To save data 1 Select the Save button to open a dropdown menu Figure 4 36 Gen Jl a a Save Movie SECONDARY IGNITION TEST 1 Save Frame MODIS can be used to view secondary cave Preset ignition waveforms i Save Image Figure 4 36 Sample TESTS screen SAVE menu 2 Select an option Save Movie saves all data in the buffer Save Frame saves only the visible screen data Save Preset saves only Scope tool screen configurations used for future testing Save Image saves the visible screen as a graphic image The Setup Saved Data Notation dialog box displays Figure 4 37 28 Operations Performing Tests Setup Saved Data Notation Kee Save Nan Year Make Component Condition Sag al a a hal Figure 4 37 Sample Setup Saved Data Notation dialog box 3 Select from the menus to set preferences as necessary The Setup Saved Data Notation dialog box works the same as the Edit Saved Data Notation dialog box found in the Saved Data mode Refer to the MODIS Display User Manual for operating details NOTE If you plan to save many screens from the same vehicle select Yes for Keep Entries This preference retains your sett
29. ng procedures Support window contains support information such as connector illustrations e Test Meter window functions as a Graphing Meter Digital Meter or Lab Scope depending on the selected test P To select a component test 1 Select Component Tests gt Component Testing gt Component Tests The Component Tests menu displays the available components for the identified test vehicle Figure 4 10 17 Operations Selecting a Component Test Wd bay ZE Component Tests modular diagnostic information system Figure 4 10 Sample Component Tests menu 2 Select a component The component menu displays Figure 4 11 TOS TF SENSOR modular dlognesile information system 20NENT INFORMATION J 7 Figure 4 11 Sample component menu 3 Select TESTS A Tests menu displays Figure 4 12 Mis ay modular diagnestic information system Figure 4 12 Sample TESTS menu 4 Select a test The Test screen displays Figure 4 13 18 Operations 4 4 Connecting to a Test Vehicle E 2 rsa Seal SS gela FREQUENCY TEST CONMNECTOR Connect test leads Yellow W55 Black W55 A WSS At 30 MPH frequency should be about WS5 Channel Frequency 1000 Hz Alin 30 s Figure 4 13 Sample Component Test screen To exit Component Tests Press N X anytime during the Components Test selection process to return to the main menu Connecting to a Test Vehicle Certain component
30. nnnnnnonononncnnnnnnncnnnnnnnnnnonnnncnnnnnnnrnnenanenns 41 ldentihying the Venid ia E 41 Table of Contents VieWing Component Into Malo iia a E 42 Printing Component Informati0N rresiaren enen Na ar E Erin aiaia 43 Power User TOS Ad deel ees 43 Features ant BEA S uranio da 43 ROW a too 44 Lg Lo 3 POE A cieweceavicnizcesaasccexecssccdenccecescecectocencass E E 45 vi Using This Manual This manual contains tool usage instructions some of the illustrations shown in this manual may contain modules and optional equipment that are not included on your system Contact a sales representative for availability of other modules and optional equipment 1 1 Conventions 1 1 1 Bold Text Bold emphasis is used in procedures to highlight selectable items such as buttons and menu options Example e Press the Y v button 1 1 2 Symbols The following types of arrows are used The greater than arrow gt indicates an abbreviated set of selection instructions Example e Select Utilities gt Tool Setup gt Date The above statement abbreviates the following procedure 1 Navigate to the Utilities button 2 Use the Thumb Pad to navigate to and highlight the Tool Setup submenu 3 Use the Thumb Pad to navigate to and highlight the Date option from the submenu 4 Press Y v to confirm the selection The solid arrows lt gt Y A are navigational instructions referring to the four directions of the Thumb Pad Examp
31. ns support information such as waveforms and connector illustrations Test Meter window bottom functions either as a Graphing Meter Digital Meter or Lab Scope depending on the test you choose This window cannot be selected Navigation a e DC VOLTAGE TEST CONNECTOR Connect test leads WIEW HARNESS SIDE BACKPROBING Yellow TPS 1 signal Black known good ground Key on Engine off voltage should be about iz E O T FE J FN LS TEF UN ELLE EET y Fe tater 171171 TFT PE J EEE TEET Tee E 4 Uid ail f 00 05 10 15 20 25 3 0 45 40 45 507 Channel Sweep 5s CADILLAC FUEL INJECTION 2006 CTS 3 6L VIN Y Figure 3 3 Sample test screen 1 Test Procedure window 2 Support window 3 Test Meter window 3 1 3 Toolbars Screen Layout Upper and lower toolbars contain test controls that vary depending on the stage of operations P To navigate toolbars 1 Press the left and right gt arrows to move between buttons 2 Press the up A and down Y arrows or press the N X button to move between the upper and lower toolbars When Easy Scroll is active press the N X button to move to the upper toolbar Upper Toolbar The upper toolbar Figure 3 4 and Figure 3 5 controls vary depending on your mode and stage of operation Table 3 1 Figure 3 4 Sample live screen upper toolbar Figure 3 5 Sample frozen screen upper toolbar Navigation Screen Layout Table 3 1 Upper toolbar con
32. o accept identification N to make changes Figure 4 8 Sample Vehicle ID confirmation message 6 Follow the on screen instruction P To exit New Vehicle ID Press Y vY anytime during the ID process to return to the main menu 4 2 2 Previous Vehicles When testing a vehicle that has already been identified the Previous Vehicles menu option provides access to the Load Vehicle Identification screen The MODIS unit automatically saves the last ten vehicle identifications and lists them on this screen P To load a previously identified vehicle 1 Select Component Tests gt Component Testing gt Previous Vehicles The Load Vehicle Identification screen displays Figure 4 9 16 Operations Selecting a Component Test Component Test Previous Vehicles Vehicle 10 MERCEDES BENZ FUEL INJECTION 1996 Es20 SATURN ABS 2003 VUE ABS ACURA CHARGING SYSTEM VOLVO FUEL INJECTION 1996 960 CADILLAC FUEL INJECTION 2006 CTS 3 6L WIN 7 Figure 4 9 Sample Load Vehicle Identification screen 2 Select an ID from the list P To exit the Load Vehicle Identification screen Press N X to return to the main menu and keep the current vehicle identification setting 4 3 Selecting a Component Test Once a test vehicle is identified you can select from the Component Tests menu The main body Figure 4 13 of the test screen can contain the following sections Test Procedure window contains connection and testi
33. reminders to the operator to exercise extreme care when using this test instrument There are many variations in procedures techniques tools and parts for servicing vehicles as well as in the skill of the individual doing the work Because of the vast number of test applications and variations in the products that can be tested with this instrument we cannot possibly anticipate or provide advice or safety messages to cover every situation It is the automotive technician s responsibility to be knowledgeable of the system being tested It is essential to use proper service methods and test procedures It is important to perform tests in an appropriate and acceptable manner that does not endanger your safety the safety of others in the work area the equipment being used or the vehicle being tested lt is assumed that the operator has a thorough understanding of vehicle systems before using this product Understanding of these system principles and operating theories is necessary for competent safe and accurate use of this instrument Before using the equipment always refer to and follow the safety messages and applicable test procedures provided by the manufacturer of the vehicle or equipment being tested Use the equipment only as described in this manual Read understand and follow all safety messages and instructions in this manual the accompanying safety manual and on the test equipment Safety Message Conventions Safety messages
34. rom left to right P To set the sweep time 1 Select Sweep A dropdown menu displays Figure 4 56 10 6 20 25 30 Channel Cycle Figure 4 56 Sample Sweep menu 2 Select an option 38 Operations Performing Tests NOTE O sweeps shorter than 1 second will collect some frames after the Pause button is selected The faster the Sweep the more frames will be collected 4 5 14 Setting the Trigger Use the Trigger control bar Figure 4 57 to set the criteria to start the display of data Figure 4 57 Sample Display Trigger control bar 1 Trigger Type 2 Slope 3 Trigger Position Trigger Type Select Trigger Type to set the criteria used to start the display of data Available Trigger Type menu options include the following e None displays data as it is collected e Ch 1 4 triggers the display based on the signal from the selected channel Available submenu options include e Ch 1 4 triggers the display based on the signal from the selected channel Available submenu options include Auto updates the screen when the signal crosses the trigger threshold in the selected direction rising or falling Even if the signal does not cross the trigger threshold the screen automatically updates after a short period so you can see the waveform which lets you set a threshold to optimize viewing Normal updates the screen when the signal crosses the trigger threshold in the selected direction rising or
35. size snapshots can store a lot of frames and use a lot of memory or store fewer frames and use less memory Adjust the percentage after trigger snapshots can be between 10 and 90 data captured after triggering Save to different locations snapshots can be saved to the MODIS internal memory or to the CF card in the top slot P To change snapshot settings 1 From the main menu select Utilities gt Tool Setup gt Save Data The Save Data dialog box displays Figure 4 33 Aiter Trigger My data File Type fo Top CF BMP PEG Figure 4 33 Sample Save Data dialog box Select the After Trigger drop down menu The lower the percentage selected the smaller the file size Open the My Data drop down menu and select a location to save the file to Open the File Type drop down menu and select the format for saving image files Press N X to close the dialog box 27 Operations Performing Tests 4 5 7 Resetting Gauges The RESET button Figure 4 34 returns the recorded digital gauge minimum and maximum values to zero Figure 4 34 Sample RESET button Use the RESET button to do the following e Track the variation in a component or circuit under a certain condition If the condition changes RESET lets you start tracking again to see the change e Verify a connection problem is fixed by looking for a dropout or spike in the min max values P To reset the min max digital values e Select RESET A co
36. sts option offers pre configured engine control and transmission systems tests with or without on screen help Features and Benefits The Features and Benefits option provides descriptions of the meter including features and benefits specifications and accessories Also included is a five minute description of how to use 43 Operations 4 9 How To the optional demonstration board to generate sample signals The demonstration board helps you learn how to better use the Component Tests software without a test vehicle How To The How To option provides a list of available on screen instructions for performing tasks such as adjusting the display contrast calculating engine RPM and finding glitches in sensors Drawings are included on the screen along with tips The following topics may be available 10 MINUTE ELECTRONIC CLASS provides brief instruction in basic electronics and circuit connections 15 MINUTE IGNITION CLASS provides an introduction to basic ignition testing How To provides on screen help for many of the tool features ILLUSTRATED TERMS 8 DEFINITIONS provides definitions of terms drawings and tips associated with component testing NO START BASICS provides the ability to diagnose no starts 02 SENSOR amp FEEDBACK SYSTEM ANALYSIS displays the component test meter in the live graphing mode with O2S test tips to help you understand the fundamental concepts of O28 diagnostics TEST TIPS
37. tests require the use of specific leads that connect your MODIS unit to a component on the test vehicle For additional leads and connection information refer to your Lab Scope Plug in User Manual The initial test screen displays connection information To connect to a test vehicle Follow the on screen connection instructions Figure 4 14 re E 14 Goo or O rezar ggz SES ee 5 DC VOLTAGE TEST CONNECTOR sino test leads VIEW HARNESS SIDE BACKPROBING ellow TPS 1 signal Black known good ground key on Engine off voltage should be about 1 aw Figure 4 14 Sample connection instructions 19 Operations Performing Tests 4 5 Performing Tests After connecting the MODIS unit to the test vehicle proceed with component tests P To perform component tests 1 Select the Test Procedure window 2 Use the Thumb Pad to scroll through the setup instructions Instructions display in the Text Procedure window accompanied by illustrations in the Support window Figure 4 15 CAE EP ojala DUTY CYCLE TEST CONNECTOR i VIEW HARNESS SIDE BACKPROBING ellow cam ACT ONTRL a a hlack known good ground Duty cycle should increase with Engine load ehicle should be road tested for accurate Figure 4 15 Sample setup instructions 3 Press the down Y arrow to advance to the next panel of instruction as needed 4 Follow the on screen procedures as needed 5 View and verify the test results as explained
38. the left and right gt arrows Lower Toolbar The lower toolbar Figure 3 8 and Table 3 2 controls vary depending on the active mode and stage of operation Figure 3 8 Sample lower toolbar Table 3 2 Lower toolbar controls sheet 1 of 2 Channel number lt a Signal Zero Offset a Trigger Type Ch 1 Lets you select the channel to adjust Displays the current test connection for the channel Displays the current units of measurement for the channel Indicates channel calibration Moves the selected channel zero 0 position up or down within the test area Changes the reference point on the waveform when calculating measurements Sets the amount of time displayed across the screen Sets the criteria used to start the display of data there are three types of Trigger settings None Channel and Cyl Navigation 3 1 4 3 1 5 3 2 Y y 3 3 Making Selections Table 3 2 Lower toolbar controls sheet 2 of 2 IE E Lets you change the Trigger edge for the specified channel from rising to falling Moves the trigger point for the specified Trigger Position ej channel it can be moved up down left or 0 right Main Body The main body of the screen generally contains the test meter and or test information Content will vary depending on the module you are using e Component Tests
39. to use gt last calibration values Figure 4 47 Sample calibration procedure message When the test screen displays the LED Figure 4 48 on the toolbar indicates the channel calibration status e Green calibrated e Red not calibrated using previous calibration values Figure 4 48 Sample calibration LED 4 5 12 Adjusting Channel Settings The Channel control bar Figure 4 49 lets you adjust channel settings and viewing characteristics for the selected trace 34 Operations Performing Tests Chi VotsDCave 1t0w ai Figure 4 49 Sample Channel control bar 1 Channel Number 2 Probe 3 Scale 4 Signal Zero Offset 5 Threshold Channel Number The Channel Number button lets you select channel options Channel One 1 is automatically displayed and cannot be turned off Channel Two through Four 2 4 can be manually selected for display The following channel options are available Displayed makes a channel s signal visible Inverted flips the selected waveform upside down This is typically used when testing secondary ignition or displaying waveforms from the Low Amps Probe Coupling AC subtracts the average value of a waveform to see small variations which is ideal for viewing alternator ripple or fuel pump amps This blocks the DC portions of an input signal in order to amplify the AC portions without driving them off the center of the screen Peak Detect captures fast events
40. trols Mame Bwm Deserption View E Lets you change the way data displays Pase m Pauses data collection and lets you review the buffered data Continuously captures data and stores it in Lets you make measurements of test data alls Lets you adjust paused data Snapshot in Lets you capture data before and after a i ESSE problem occurs while testing Zoom FA Lets you change the magnification of the Ba EEEN frozen data Reset Lets you clear the Min Max data for all Ls ESET digital gauges Lets you store data and settings in memory Print Lets you print the selected screen E information Lets you change the way information appears change where it saves and enter vehicle system information Data Buffer The Data Buffer Figure 3 6 is located just below the upper toolbar buttons and indicates how much test data is stored Figure 3 6 Sample Data Buffer 1 Pause button 2 Data Buffer When the screen is frozen the position indicator displays the current frame number Figure 3 7 Navigation ES owe 5 G Screen Layout Figure 3 7 Sample Scroll Control with Position Indicator 1 Play button 2 Position Indicator The Data Buffer cannot be highlighted or selected P To manually scroll through stored frames 1 When the screen is frozen select REVIEW 2 Press
41. ullScreen KOER measure voltage at idle Voltage increases as intake air increases high Engine load A Widiw d is 20 25 0 Figure 4 21 Sample Full Graph view el TO snae znor 0 eset Full Digital Full Graph DC VOLTAGE TEST KOER measure voltage at idle Voltage increases as intake air increases high Engine load A Widiw 15 20 25 30 35 40 45 Figure 4 22 Sample Split Screen view 22 Performing Tests Operations Performing Tests RPM Digital Full Screen Figure 4 23 Sample Full Screen view 4 5 2 Pausing Data The Pause button Figure 4 24 stops data collection and lets you review data The screen can be paused at any time eMe aas ABlei Figure 4 24 Freeze button P To pause test screen data e Press the Pause button Figure 4 24 The data is paused on screen for review and the following three upper toolbar controls also change Figure 4 25 The Play button replaces the Pause button The REVIEW button is active The ZOOM button replaces the SNAPSHOT button The Position Indicator displays in the Data Buffer Figure 4 25 Sample frozen upper toolbar 1 Play button 2 REVIEW button 3 ZOOM button 4 Position Indicator P To release paused data e Press the Play button 23 Operations 4 5 3 Performing Tests Live data displays and the toolbar controls revert to their original state Reviewing Data The REVIEW button
42. vent 1 Make sure a Display Trigger is set 2 Wait for a triggered event to display 40 Operations Viewing Component Information 3 Select Save gt Screen Trigger Slope The Trigger Slope button selects the direction the waveform must be going rising or falling when crossing the trigger point NOTE This button is only available when a Channel is the active trigger type Trigger Position The Trigger Position Figure 4 61 button is used for moving the trigger point for a specified channel either along the X horizontal or Y vertical axis of the display To move the trigger point 1 Select Trigger Position The trigger point marker becomes active Figure 4 61 Channel Sweep lay Than Chi Testlead sov mf _20ms chi AB Figure 4 61 Sample Trigger Position button 2 Use the Thumb Pad to move the on screen marker and select a new Trigger point 3 When you are finished press N X to release the button The button reverts to its original state to indicate that the button function is inactive 4 6 Viewing Component Information This section explains how to view component information The following is an outline of basic testing operations 1 Identify the vehicle dentify the test vehicle to the Component Tests module or select from a list of previously identified vehicles 2 View component information Display up to four categories of vehicle specific component information 4 6 1 Identifying
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