PicoDiagnostics User's Guide
Contents
1. do im Battery Test A i all a A 008 o E i do n P A rias casi Missfire Total Engine Cycles roast ses LIEBE Captiring 817RPM GA oo The result If the test could not produce a result see Failed cylinder balance 15 You can stop the test at anytime by simply clicking the button labelled Stop It is possible to then scan through the results by clicking the button labelled Play The results are always scaled to show the highest cylinder at 100 Cylinder balance controls During the test you can right click on the bar graph to get a control menu See Cylinder balance controls 13 pd en Copyright 2009 2011 Pico Technology Ltd All rights reserved PicoDiagnostics User s Guide 13 4 1 6 Cylinder balance controls Right click the cylinder balance bar graph to bring up a menu with display options You can use this menu to access more information concerning the test and its result variation Misfire Signal Variation Displays the variation in contribution for each cylinder as an overlaid blue bar Misfire Displays suspected misfires as a separate bar for each cylinder Signal Not required for basic testing Brings up a second graph the signal graph 1A that can display the engine speed or the contribution for each cylinder over time To zoom in on the data2. Disabling the engine The compression test can be done only when cranking so the engine must be prevented from starting This can be done by removing the engine management relay from the fuse box or disabling the injectors Copyright 2009 2011 Pico Technology Ltd All rights reserved pd en 18 Tests 4 2 4 4 2 5 4 2 6 Compression test setup Setting up the test The compression test should be performed according to the vehicle manufacturer s Specification If you are using the pressure transducer click the Pressure button Next click the numbered button corresponding to the number of cylinders in the engine Compression test options This dialog appears when you click the Options menu on the main menu bar while the Compression Test 18 is selected It allows you to set special options before running the test These options apply only to the absolute compression test and not to the relative compression test Scale bar Compensate E Cylinder Volume 1 Compression Ratio 4 1 Sensor Volume Scale The units in which the pressure sensor is calibrated Compensate Check to use the Cylinder Volume Compression Ratio and Sensor Volume parameters Leave unchecked to ignore these values Cylinder Volume I The volume of the cylinder in litres Compression Ratio X 1 The compression ratio of the cylinder For example if the compression ratio is 11 1 enter 11 Sensor Volume
3. Technology PicoDiagnostics Automotive Software User s Guide pd en 8 Copyright O 2009 2011 Pico Technology Ltd All rights reserved Technology PicoDiagnostics User s Guide I Table of Contents o a A A a a E a a 1 DIO GCE Midas 2 TContact informations ssa sede iso sds U Cos a SELO SU ATA Cad an E AAS Tina soa aii SE sida dn 2 2 Using PicoDiagnostics for the Tirst time sas sisal a A a a ad E aa 2 3 Licence agreement ssssseeeeeeeeeeeeeesssssseeeeeeeeeeceeeessssssereeereeeeeeeessssssserreeeeeeeeeeesssssserreeeeeeeeeeeessssseereeeeeeeeeeeessssssee 3 SMES aaa cao e cba 4 TEME Menu lt a 4 1 User Details dialog A O De a O a i Eats a PSC Del Sa Bad Os ay 5 DEIEMEROE ARES ROC Ee caca 6 AVENA O RD ORGS RODO ND eae DE A RD PR ss oe ebb one cs teow ebb bone aeS 6 1 Customer details dialog DIO OEA eU IRS T A E PEA DSO sosa rocosa roo SS SERASA EEE E PEDRA A E T roo 6 A Tests Men eee Sense EA A aae a O E Ce a is 8 5 Options Menitl ima A li eee 8 6 Help MEN ari a Ga RT Ra EEEE raia as Ra eau EEE 8 A aa E a eat 9 1 Cylinder Bal fice assis sora esiras A A A eae 9 1 Cylinder balance introduction RR CTO 9 2 Cylinder balance cat aero i fe late CR ee cala ap eee acaso 9 3 Cylinder balance wizard nn eeeeererree antera rtee rear are rrerarerireeaeerarsermseresermreanntas 10 4 Cylinder balance options PDR PARDO SE NIRO PN DO SORA Ro ARDOR RADIO vic eis NAO DE OE DR DARE RN 12 5 Cylinder ba
4. click and drag to select the range to display Copyright 2009 2011 Pico Technology Ltd All rights reserved pd en 14 Tests Cylinder balance signal graph The signal graph displays the captured data as engine speed or cylinder contribution Zooming You can use the mouse to zoom in on the data Use the context menu right click to zoom out again Engine Speed Signal graph context menu Right click the graph to bring up a menu with display options You can use this menu to access more information concerning the test and its result Engine Speed Cylinder Contribution Zoom out This zooms out to display the full dataset Zoom out View You can choose to view the engine speed or the cylinder contribution 12 pd en Copyright O 2009 2011 Pico Technology Ltd All rights reserved PicoDiagnostics User s Guide 15 4 1 8 Failed cylinder balance x the test could not produce a result make sure that e the connection to the battery is good e the tension of the alternator belt is adequate It may also help if you you switch the headlights on full beam and switch on other electrical loads such as the rear windscreen heater and fog lights There are some engines for which the test has difficulties producing a result These include engines with more than 8 cylinders some engines with dual mass flywheels engines with inertial dampers vehicles with xenon lights If there is
5. Menus 52 3 3 3 3 1 Edit menu Click Edit on the Menu bar 4 Edit Ctrl C Copy Here you will find the Copy option available only when data is shown on screen View menu Click View on the Menu bar 4 l Details Details Edit the customer and vehicle details and notes 6 Customer details dialog This dialog appears when you select Details on the View menu 6 It allows you to enter details about the customer and the vehicle you are testing There is also a space for entering notes about the test Vehicle J Smith Make 123 456 789 Model 3 High Street Year 003 Newtown PPS SFL D VW53GLF How to use the dialog This dialog is for you to store data about the customer and the vehicle that the test applies to The data in this dialog will be saved with the test and printed on the report Click OK to close the dialog and save the changes Click Cancel to close the dialog and discard the changes pd en Copyright 2009 2011 Pico Technology Ltd All rights reserved PicoDiagnostics User s Guide 7 Customer details Customer Name J Smith Phone 123 156 789 Address High Street Newtown PP25 SFL Name The customer s name Phone The customer s phone number Address The customer s address There is space for 4 lines Vehicle details Vehicle Make Volkswagen Model Golf Year 003 ID VW53 GUF Make The make of the vehicle The makes of vehicles are stored
6. U Upgrades 3 Usage 3 User details 5 V Vehicle details form 6 View menu 6 Viruses 3 W Wizard Cylinder balance 10 Copyright 2009 2011 Pico Technology Ltd All rights reserved pd en Technology PicoDiagnostics User s Guide 29 Copyright O 2009 2011 Pico Technology Ltd All rights reserved pd en Pico Technology James House Colmworth Business Park ST NEOTS Cambridgeshire PE19 8YP United Kingdom Tel 44 0 1480 396 395 Fax 44 0 1480 396 296 WWW picoauto com pd en 8 1 12 11 Copyright 2009 2011 Pico Technology Ltd All rights reserved
7. in a database If you manually enter a make which is not already saved a message box will pop up Model The model of the vehicle When a make has been selected this list is populated with all the currently known models of that make Year The year of the vehicle ID An identification number for the vehicle Can be the VIN or anything else you choose Notes Notes a In the Notes field you can enter additional information that you want stored with the test Copyright 2009 2011 Pico Technology Ltd All rights reserved pd en 8 Menus 3 4 Tests menu Click Tests on the Menu bar 4 Click for more Cylinder Balance information Compression Test Battery Test This menu lists all the tests available Click one of the tests to proceed 3 5 Options menu The Options menu changes depending upon which test you are carrying out at the time Please see below for links to the test options you require e Cylinder balance options 12 e Compression test options 18 e Battery test options 24 3 6 Help menu Click Help on the Menu bar 4 Contents Fl About These are the standard Windows options for access to this help file pd en Copyright O 2009 2011 Pico Technology Ltd All rights reserved PicoDiagnostics User s Guide 4 4 1 4 1 1 Tests PicoDiagnostics is a collection of specific automotive tests They are all designed to be easy to use even if you have little or no experience
8. of automotive diagnostics To begin any test click the PicoDiagnostics icon on your computer pes These tests are available with this installation of PicoDiagnostics e Cylinder Balance 9 e Compression Test 16 e Battery Test 21 Cylinder balance Cylinder balance introduction The cylinder balance test measures how much each cylinder contributes to the engine s total power output There are a number of things that can cause a cylinder to contribute less than the other cylinders These include but are not limited to e low compression e faulty injector e faulty spark plug A slightly uneven balance does not necessarily mean that there is a fault in the engine During warm up most engines run slightly unevenly Deposits and engine wear may also have an effect on the engine s performance To use the cylinder balance start PicoDiagnostics and set the test conditions 9 Cylinder balance test conditions Setting the test conditions The following test conditions must be met before running the test e The engine must be at normal running temperature This can be confirmed when the cooling fan has activated twice and by referencing the temperature gauge on the vehicle s dashboard e The engine must be off before connecting the oscilloscope If this is the first cylinder balance test you are running load the test using the Tests menu 81 Follow the on screen wizard instructions to connect your PicoScope to the veh
9. state of charge results To eliminate the surface charge switch the lights on full beam for about 2 minutes and then wait for about 2 minutes before performing the test If you are only measuring cold cranking amps then you can ignore this precaution Follow the instructions below to connect your PicoScope to the vehicle and run the test e Connect the PicoScope e Set any special test options 24 e Run the test e If the result is blank 26 Copyright 2009 2011 Pico Technology Ltd All rights reserved pd en 22 Tests 4 3 2 Battery test connections Connect the PicoScope Connect the PicoScope to a free USB port on your PC using the USB cable Connect one of the general test BNC cables to Channel A on your PicoScope On the other end connect a large red crocodile clip to the red lead and a large black crocodile clip to the black lead Remove the cover from the fuse box Connect the red clip to the battery positive A and the black clip to a secure earth or ground point A as Shown in the picture below Battery test connections A Ch A ground black clip A Ch A positive red clip B current clamp Connect the 600 A or 2000 A current clamp to Channel B on the PicoScope Place the amp clamp 600 amp clamp for light vehicle applications or 2000 amp clamp for heavy duty applications so that it is positioned around the positive cables which are connected to the positive battery terminal More importantly m
10. still a problem If you have checked the points mentioned above and the software still cannot produce a result we would like you to send us a copy of the of the failed test data Please enter as much information as possible about the vehicle tested This is done via the Details dialog e Save the test to a file using the File Save menu and email the file to us on picodiagnostics feedback picotech com Copyright O 2009 2011 Pico Technology Ltd All rights reserved pd en 16 Tests 4 2 Compression Test 4 2 1 Compression test introduction The compression test is meant to be a first check If the compression looks good you can quickly move on and investigate other components which might be the cause of the fault If the test detects a low cylinder you should perform a manual compression test to verify the results and to work out which cylinder is low To use the compression test start PicoDiagnostics and click the Compression Test button sat rome 3 Y 5 5 Co ro 2 o Compression test before starting the test There are two types of compression test e Relative compression requires no pressure transducer only a connection to the battery e Absolute compression requires a connection to the battery and a pressure transducer connected to a spark plug port Follow the instructions below to connect your PicoScope to the vehicle and run the test e Set the test conditi
11. I The volume of the pressure sensor in litres This Information should be available from the manufacturer of the sensor If in doubt do not alter the value in this box Compression test Running the test To start the test click the button labelled Start at the lower left corner of the window A new window with a progress indicator and instructions will appear on the screen Wait until the message in the window is Crank engine With the throttle wide open accelerator pedal fully pressed crank the engine until the progress indicator reaches 100 pd en Copyright 2009 2011 Pico Technology Ltd All rights reserved PicoDiagnostics User s Guide 19 The data is now analysed and the result appears in a bar graph as in one of the examples below Cylinder A Cylinder B Cylinder C Cylinder D Cylinder A a A Engine 4 Cylinder RPM 215 Cycles 9 J L der Cylinder B 0 Cylinder A Sat Pressure 3 BE 6 8 2 EMS RPM Compression test result o Compression test result without pressure sensor with pressure sensor relative mode absolute mode In relative compression mode the In absolute compression mode result is always scaled to show the PicoDiagnostics shows the true highest cylinder at 100 The bars are compression in each cylinder As in ordered according to the engine s firing relative compression mode the ba
12. ake sure the amp clamp is positioned around the starter motor feed cable main positive cable from battery to starter motor If you have a 4 channel scope then you can run the optional extended drop test Additional connections for extended drop test In addition to connecting channels A and B as described above channels C and D must also be connected as follows Channel C Using a BNC to 4 mm lead connect the red 4 mm plug to the positive terminal of the starter motor using the appropriate clip connector This is the terminal that the main positive cable from the Battery Connects to Channel D Using a BNC to 4 mm lead connect the red 4 mm plug to the negative terminal of the starter motor using the appropriate clip connector pd en Copyright O 2009 2011 Pico Technology Ltd All rights reserved PicoDiagnostics User s Guide 23 4 3 3 Note Most modern vehicles don t have earth cables to the starter motor In this case connect to one of the mounting bolts by which the starter motor is attached to the engine or gearbox bell housing as the starter will earth through to chassis and or battery This will enable PicoDiagnostics to separate the cable resistance from the starter motor resistance All connections must be clean and free from oil grease and dirt to ensure the readings are accurate Battery test setup First click either the 12 V or the 24 V button depending on the voltage of your electrical system Ti
13. arge for updates or replacements sent out on physical media Trademarks Windows is a registered trademark of Microsoft Corporation Pico Technology PicoScope and PicoLog are internationally registered trade marks Copyright 2009 2011 Pico Technology Ltd All rights reserved pd en Menus 3 1 Menus Menus are the quickest way to get to the main features in PicoDiagnostics The Menu bar is always present at the top of the PicoDiagnostics main window just below the window s title bar You can click any of the menu items or press the Alt key and then navigate to the menu using the cursor keys or press the Alt key followed by the underlined letter in one of the menu items Fie Edit View Tests Options Help The list of items in the menu bar may vary depending on which test you are running File menu Click File on the Menu bar 4 Preferences Exit Load Allows you to load a test from disk to review the result Loading a test result from disk will clear any captured data and results Save Some tests allow you to save test data to disk Print Opens a standard Windows print dialog which allows you to choose a printer set printing options and then print the selected view Print Preview Opens the Print Preview window which allows you to preview the report before printing it with the Print command Preferences Opens up the User Details dialog 5 Exit Close PicoDiagnostics without savi
14. echnology PicoDiagnostics User s Guide 1 1 Welcome Welcome to PicoDiagnostics the automotive fault finding software for your PicoScope Oscilloscope With a PicoScope PicoDiagnostics turns your PC into an automotive diagnostics tool The program includes a range of built in tests that are easy to operate even if you haven t used them before If you need to go beyond the built in tests an additional program is available PicoScope Automotive This software will have been downloaded and installed along with PicoDiagnostics This gives you all the features of an advanced oscilloscope and can be used to diagnose almost any electrical component in any vehicle ylinder Cylin Balance Compression Test Battery Test pico PicoDiagnostics mm Automouve Diagnostic Software PicoScope 4423 opened successfully This manual has been updated to be brought in line with release version 1 4 of the software Copyright O 2009 2011 Pico Technology Ltd All rights reserved pd en Introduction Introduction PicoDiagnostics supports the PicoScope 3000 and 4000 Series diagnostic oscilloscopes e Contact information 2 How to use PicoDiagnostics e Getting started see Using PicoDiagnostics for the first time 2 e For further information see descriptions of Menus 4 2 1 Contact information Address Pico Technology James House Colmworth Business Park ST NEOTS Cambr
15. gine gt MN 6 Le 62 19 gt On screen two the user must identify the number of cylinders the vehicle to be tested has Screen three Setup Wizard Signal Quality Check Signal Quality Signal Strength ee tres This screen shows the signal strength between the PicoScope and the vehicle to be tested Note If the signal strength is low you can improve it by switching on various ancillaries i e Mainbeam lights fog lights interior fan full rear demister Copyright O 2009 2011 Pico Technology Ltd All rights reserved pd en 12 Tests 4 1 4 Cylinder balance options This dialog appears when you click the Options menu on the main Menu bar 4 while the Cylinder Balance Test 9 is selected It allows you to set special options before running the test Cylinder Balance options oes E Cylinder Balance options Input signal l atten AC Ripple gt Input signal Crank Sensor a Capture time Battery AC Ripple Capture time 4 00s Show Setup Screen at Startup Show Setup Screen at Startup 7 4 1 5 Cylinder balance test Run the test To start the test click the button labelled Start at the lower left corner of the window If the test successfully starts a new window with a progress indicator will briefly appear on the screen The data is now being analysed and shown in real time on screen with the results appearing in the bar graph as shown below pie
16. icle If however you have already run a cylinder balance test simply click the button labelled Setup and follow the on screen wizard instructions Copyright O 2009 2011 Pico Technology Ltd All rights reserved pd en 10 Tests 4 1 3 Cylinder balance wizard The cylinder balance setup wizard consists of 3 screens These screens are shown below Screen one Setup Wizard Instruction Connect the Picoscope to the Battery Stage 1 Connect channel Ato 12 24V electrical system Ideally connect near the altemator but if the battery is close to the altemator it is OK to connect at the Stage 2 Switch on headlights Stage 3 Start the engine Stage 4 NA Voltage Check This screen gives the user guidance on connecting the PicoScope ready for the Cylinder Balance test Connect the oscilloscope Connect the scope to a free USB port on your PC using the USB cable Connect one of the general test BNC cables to Channel A on your oscilloscope On the other end connect a large red crocodile clip to the red cable and a large black crocodile clip to the black cable Connect the red clip to the battery positive and the black clip to the battery negative as shown in the picture above pd en Copyright O 2009 2011 Pico Technology Ltd All rights reserved PicoDiagnostics User s Guide 11 Screen two Setup Wizard Select Cylinder Count Select Cylinders Select the number of cylinders on the en
17. idgeshire PE19 8YP United Kingdom Web site www picotech com 2 2 Using PicoDiagnostics for the first time We have designed PicoDiagnostics to be as easy as possible to use even for newcomers to automotive diagnostics Once you have followed the introductory steps listed below we hope that you will soon become an expert Plug in your PicoScope oscilloscope Windows will recognise it 1 and make the necessary changes to allow your computer to l work with it Wait until Windows tells you that the device is ready to use 2 Click the new PicoDiagnostics icon on your Windows desktop Balance 3 Click the button for the test you wish to perform 4 Follow the on screen Setup Wizards or instructions on l connecting your scope and running the test pd en Copyright 2009 2011 Pico Technology Ltd All rights reserved PicoDiagnostics User s Guide 3 2 3 Licence agreement The material contained in this release is licensed not sold Pico Technology grants a licence to the person who installs this software subject to the conditions listed below Access The licensee agrees to allow access to this software only to persons who have been informed of these conditions and agree to abide by them Usage The software in this release is for use only with Pico products or with data collected using Pico products Copyright Pico Technology claims the copyright of and retains the rights to all material software documents etc contained in this relea
18. lance CGE A AA A ad ana a 12 6 Cylinder balance contro ls lt 2 aceasamse tese cosets ee STARR Rad esmas 13 7 Cylinder balance signal graph EF ashes An TEE O casas So a aan T a a AS E dO ua vente CEA O CA Ge ada Dan 14 8 Failed cylinder balance eee testes tecsntecnnenantecanecentenaneecaecanecaaecaseceaenaaecanecaaenaneeenensaenanssegtes 15 2 Compression Test rita di OR PI E E ADERIR RAD E DSR ENE ET 16 1 Compression test introduction ooh sees sated cc tetas ion Tania ncaa senna anes caveats dd Cao aos pata antes 16 2 Compression test conditions ee ee tee neon rennn canon ennnn enanos 16 3 Compression test connections E EEE E E PES E EREE EE T ANN 17 4 Compression test setup iS a A RAE E ER ANE ie wis EI N ARETE asas 1 8 5 Compression test options O E EEEE EEE EEEE E EE AEE O TO 18 6 Compression test a E E E E T N A A T T T E A T EY 1 8 7 Failed compression test a 20 3 Battery TES a AS A ada alia da suada gl atrial tea 21 1 Battery test introduction sip er ee ee ee er eee 21 2 Battery test connections is 6 8 Steers E viera A A ed cia SG A E Gl ae 06 Sm Old OO O E ias boia TS 22 3 Battery test setup AS 23 4 Battery test options a do 24 5 Battery t st AAA AAA AAA EA AAA AE AAA A AAA EA A AAA 25 6 Battery Test interpreting the results anida AO EEE RERE 26 TGS A O A o EII nad Mura Gai sanada aan nada Sado aaa dado aaa dna al asa ada Saba aa 2 Copyright 2009 2011 Pico Technology Ltd All rights reserved pd en T
19. ng any data pd en Copyright O 2009 2011 Pico Technology Ltd All rights reserved PicoDiagnostics User s Guide 3 1 1 User Details dialog This dialog appears when you select Preferences on the File menu 4 It allows you to enter details about your company and your name These will appear on the report E Preferences User Details Regional and Language Information All the information you enter here will be stored and loaded when you start Pico Diagnostics next time This infomation will be printed as a header on the reports How to use the dialog Enter all the values you want Company Name Telephone Address Pico Technology NG Near 01480 396395 James House Colmworth Business Park ST NEOTS Cambs PE19 STYF United Kingdom K Artwork Logos Pico pico full Click OK to close the dialog and save the changes Click Cancel to close the dialog and discard the changes The items in the dialog Company The name of your company This will be displayed on the report if no logo has been selected Name Name of the technician or the contact name to appear on the report Telephone The contact number that the customer will see on the report Address The address of your company There is space for four lines Logo Your company logo selecting a file here will enable it to appear on your reports Copyright 2009 2011 Pico Technology Ltd All rights reserved pd en
20. ons 16 e Connect the oscilloscope 17 e Connect the pressure transducer 17 only for the absolute compression test e Disable the engine e Run the test e Ifthe result is blank 20 4 2 2 Compression test conditions Setting the test conditions The following test conditions must be met before running the test e The engine must be at normal running temperature which is indicated by the Cooling Fan switching on pd en Copyright 2009 2011 Pico Technology Ltd All rights reserved PicoDiagnostics User s Guide 17 4 2 3 e The engine must be off before connecting the oscilloscope e The cranking speed must be normal battery must be charged Compression test connections Connecting the oscilloscope Connect the oscilloscope to a free USB port on your PC using the USB cable Connect one of the general test BNC cables to Channel A on your scope On the other end connect a large red crocodile clip to the red lead and a large black crocodile clip to the black lead Connect the red clip to the battery positive and the black clip to the battery negative as shown in the picture below Connecting the pressure transducer absolute compression test only Remove the spark plug from any convenient cylinder Fit a compression hose into the empty spark plug socket then attach it to the pressure transducer s inlet port as Shown in the picture below Then connect a BNC to BNC cable from the pressure transducer to Channel B on your scope
21. p If you have a 24 V system with two 12 V batteries test each battery separately Otherwise one good battery could hide a fault in the other battery Next set the temperature control to the local air temperature in degrees Celsius Now set the battery test options see Battery test options 24 Copyright O 2009 2011 Pico Technology Ltd All rights reserved pd en 24 Tests 4 3 4 Battery test options This dialog appears when you click the Options menu on the main menu bar while the Battery Test 23 is selected It allows you to specify the characteristics of the battery before running the test Refer to battery manufacturer s specification for CCA and Ah figures e Change any options in the Battery Test Options dialog 24 that are different from the standard test Curent Clamp System voltage Extended drop test Cold Crank Unit Battery capacity Battery capacity 4h Capture time Sampling rate Battery capacity CCA The battery capacity in cold cranking amperes Battery capacity Ah The battery capacity in ampere hours e Click OK to confirm pd en Copyright 2009 2011 Pico Technology Ltd All rights reserved PicoDiagnostics User s Guide 25 4 3 5 Battery test Click the Start button in the bottom left corner of the window Note Because the engine is not drawing any current at this stage the program will draw a horizontal line showing zero amps of current If this line is not at ze
22. ro amps the current clamp may need to be adjusted Press the Zero button or turn the Zero dial on the clamp until the horizontal line is at zero amps Start the engine While the test is running the program shows the voltage on Channel A and the current on Channel B and a graph is drawn from left to right The program automatically stops recording data when it has enough information so there is no need to click the Stop button unless you wish to stop the test early The program then analyses the data and shows the results in a table as in the picture below File Edit View Tests Options Help Channel A N A Battery Test Parameter Value Battery Initial voltage 13 2V State of Charge Overcharged Lowest voltage 9 22V Voltage drop 3 93V Maximum current 555A intemal resistance 6 9 m0 Temperature 20 0 C Capacity 468 SAE CCA Condition OK Starter Motor Resistance 16 6m0 Charging Circuit Status Charging at 83 Voltage 14 1V Ripple 194mV Current 25 74 Capacity is 100 of 380 SAE Battery is good Analyse a 24v 20 0 C E Done If the program reports Battery has failed the test refer to help file for advice see Interpreting the Results 26 Copyright 2009 2011 Pico Technology Ltd All rights reserved pd en Tests 26 4 3 6 Battery Test interpreting the results If the state of charge is low then recharge
23. rs order The cylinders are named A B C are named A B C and so on and so on because with only a connection to the battery the software has no way of knowing which cylinder is number one This may cause the result to be shifted if you run the test on the same engine more than once The result If the test could not produce a result see Failed compression test 20 Copyright O 2009 2011 Pico Technology Ltd All rights reserved pd en 20 Tests 4 2 7 Failed compression test amp If the test could not produce a result make sure that e the connection to the battery is good e there is not a battery charger connected to the vehicle s electrical system If there is still a problem If you have checked the points mentioned above and the software still can t produce a result we would like you to send us a copy of the of the failed test data Please enter as much information as possible about the vehicle tested This is done using the Details dialog e Save the test to a file using the File Save menu 4 and email the file to us at picodiagnostics feedback picotech com pd en Copyright 2009 2011 Pico Technology Ltd All rights reserved PicoDiagnostics User s Guide 21 4 3 Battery Test 4 3 1 Battery test introduction To use the battery test start PicoDiagnostics and click the Battery Test button Tip If the battery has been recently charged there is a risk of surface charge affecting the
24. se You may copy and distribute the entire release in its original state but must not copy individual items within the release other than for backup purposes Liability Pico Technology and its agents shall not be liable for any loss damage or injury howsoever caused related to the use of Pico Technology equipment or software unless excluded by statute Fitness for purpose No two applications are the same Pico Technology cannot guarantee that its equipment or software is suitable for a given application It is your responsibility therefore to ensure that the product is suitable for your application Mission critical applications This software is intended for use on a computer that may be running other software products For this reason one of the conditions of the licence is that it excludes usage in mission critical applications for example life support systems Viruses This software was continuously monitored for viruses during production but you are responsible for virus checking the software once it Is installed Support If you are dissatisfied with the performance of this software please contact our technical support staff who will try to fix the problem within a reasonable time If you are still dissatisfied please return the product and software to your supplier within 14 days of purchase for a full refund Upgrades We provide upgrades free of charge from our web site at www picotech com We reserve the right to ch
25. the battery and re test Parameter Battery E E Initial voltage MD State of Charge Lowest voltage Voltage drop i Maximum current Internal resistance Capacity ca 20 C MB Condition Value Comment 12 64 Bad cell Check connections and idle current 97 1 ri 12 64 56 94 15801 Invalid 0 CCA Capacity da 0 of 700 COA Replace If the state of charge is all right but the CCA cold cranking amps is low then check these things before replacing the battery e Check the battery connections If they are loose they could increase the internal resistance e If the battery is not a sealed type check the fluid levels in each cell Copyright O 2009 2011 Pico Technology Ltd All rights reserved pd en PicoDiagnostics User s Guide 27 Index A Access 3 B Battery test 21 23 25 Connections 22 Options 24 Results 26 C Compression test 16 18 Conditions 16 Connections 17 Failed 20 Options 18 Copyright 3 Customer details form 6 Cylinder balance 9 12 controls 13 Failed 15 Options 12 Cylinder variation 13 D Details dialog 6 E Exit command 4 F Fitness for purpose 3 H Help menu 6 8 L Legal statement 3 Liability 3 Licence agreement 3 Load command 4 M Menu bar 4 Misfires 13 Mission critical applications 3 N Notes form 6 P Preferences command 4 S Save command 4 Signal graph 14 Support 3 y Tests menu 8 Trademarks 3
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