EDEA

1. EDEA EDEA Compass Diagnostic guide for EDEA testers

2. Menu Please select an option EDEA Compass Diagnostic Flow Charts Basic Theory How to use the Program

3. How to use the program Right clicking the Home icon takes you back to last menu viewed. Right clicking the Left arrow icon takes you back to last screen viewed. Right clicking the Right arrow icon takes you to the next screen. Right clicking the Yes icon guides you through the flow chart. Right clicking the No icon guides you through the flow chart. Right clicking the Help icon provides information about the test procedure. Right clicking the Video icon plays a video of the subject under discussion. . Right clicking the Picture icon displays a picture of the subject under discussion. Right clicking the Toolbox icon demonstrates a testing procedure. .

4. Diagnostic Flow Chart Menu Click on the heading which best describes the vehicles symptoms Not starting Poor Idle Power Loss Misfire Cutting out

5. No Start Does the vehicle have spark at the plugs?

6. No Start Always test for initial spark loss just prior to the spark plug. The reason for testing for spark at this point is that if spark is tested further “upstream” and there is a good spark, the technician may incorrectly assume that the vehicle has spark when it fact it may not have spark further down the ignition system closer to the spark plugs. So to avoid confusion always make initial checks at this end of the ignition system. Disconnect from spark plug and test for spark here Ignition lead Connect this side of the spark tester to ground.

7. Testing for spark using the EDEA spark tester Distributor ignition system Use the spark tester provided in the EDEA tester kit For an to avoid misdiagnosis test for spark at the last point of the ignition system prior to the spark plugs. If the system has ignition leads test at the lead end that connects to the spark plugs. Testing for spark further up the ignition system may give misleading results leading to lost time. Connect this side of the spark tester to ground. Disconnect from spark plug and test for spark here Connect this side of the spark tester to ground. Coil over plug (COP) ignition system Coil pack or distributor less ignition system Connect this side of the spark tester to ground. Disconnect from spark plug and test for spark here Disconnect from spark plug and test for spark here

8. No Start Vehicle has no spark at the plugs. What type of ignition system does the vehicle have? Coil Over Plug Coil Pack Distributer

9. Identify the ignition system Use the spark tester provided in the EDEA tester kit For an to avoid misdiagnosis test for spark at the last point of the ignition system prior to the spark plugs. If the system has ignition leads test at the lead end that connects to the spark plugs. Testing for spark further up the ignition system may give misleading results leading to lost time. Coil over plug (COP) ignition system Coil pack or distributor less ignition system Distributor ignition system 9

10. No Start Vehicle has no spark at the plugs. The vehicle has a coil over plug ignition system Is there battery voltage at the coil over plug connector plug when disconnected? Why disconnect the plug terminal when testing battery voltage.

11. Why disconnect the connector plug when measuring for voltage at the ignition coil Why disconnect the connector plug when testing battery voltage.

12. Test for battery voltage at the coil with the plug terminal disconected The EDEA ignition tester is able to measure voltages from 0 to 15 Volts in one Volt increments with an accuracy of 0.5 volts. The voltmeter has a capture mode that can be configured to detect unwanted drops or rises in voltage. When the tester is in capture mode and an event is detected, the tester will count and record the amount of times the event occurs. To use the voltmeter function of the EDEA tester connect the red test lead to the top of the EDEA tester. For more information refer to the Instructional CD ROM. Main menu / Extra testing procedures / Voltmeter 1 2 Only the LED’s in the SPEED panel are used to display voltage.

13. No Start Vehicle has no spark at the plugs. The vehicle has a coil over plug ignition system There is battery voltage at the coil over plug terminal with the plug disconected Is the coil receiving a switching signal?

14. No Start Vehicle has no spark at the plugs. The vehicle has a coil over plug ignition system There is battery voltage at the coil over plug terminal with the plug disconnected The coil is receiving a switching signal Does the coil have a good ground connection?

15. No Start Vehicle has no spark at the plugs. The vehicle has a coil over plug ignition system There is battery voltage at the coil over plug terminal with the plug disconected The coil is not receiving a switching signal Is there battery voltage at the injector connector plug, with plug removed plug from the injector? Why disconnect the connector plug when testing battery voltage.

16. Why disconnect the injector connector plug when testing for voltage Why disconnect the connector plug when testing battery voltage.

17. Test for battery voltage at the injector with the plug connector disconnected The EDEA ignition tester is able to measure voltages from 0 to 15 Volts in one Volt increments with an accuracy of 0.5 volts. The voltmeter has a capture mode that can be configured to detect unwanted drops or rises in voltage. When the tester is in capture mode and an event is detected, the tester will count and record the amount of times the event occurs. To use the voltmeter function of the EDEA tester connect the red test lead to the top of the EDEA tester. For more information refer to the Instructional CD ROM. Main menu / Extra testing procedures / Voltmeter 1 2 Only the LED’s in the SPEED panel are used to display voltage.

18. No Start Vehicle has no spark at the plugs. The vehicle has a coil over plug ignition system There is battery voltage at the coil over plug terminal with the plug disconnected The coil is receiving a switching signal The coil has a good ground connection Test the coil is it functioning correctly?

19. No Start Vehicle has no spark at the plugs. What type of ignition system does the vehicle have? Vehicle

20. No Start Vehicle has no spark at plugs The vehicle has a coil over plug ignition system The vehicle does not have a battery voltage at the coil Is there battery voltage at the injector, with the injector plug disconnected? Click the question mark icon below if you are unclear as to why you would disconnect the injector plug before testing for voltage at the injector.

21. No Start Vehicle has no spark at plugs Vehicle has no injection pulse. There is a 12 volt supply to the injector with the injector plug disconnected Perform a volt drop test. Does the injector voltage supply wire pass the volt drop test? Please click the question mark icon below if you are unclear as to what a volt drop test is.

22. No Start Vehicle has no spark at plugs The vehicle has a coil over plug ignition system The vehicle does not have battery voltage at the coil The vehicle does not have battery voltage at the injectors Can you hear the fuel pump prime when you turn the key to the on position?

23. No Start Vehicle has no spark at plugs The vehicle has a coil over plug ignition system The vehicle does not have battery voltage at the coil The vehicle does not have battery voltage at the injectors The fuel pump cannot be heard priming when the ignition key is turned to the on position. Can you hear any relays click when the ignition key is turned to the on position?

24. No Start Vehicle has no spark at plugs The vehicle has a coil over plug ignition system The vehicle does not have battery voltage at the coil The vehicle does not have battery voltage at the injectors The fuel pump cannot be heard priming when the ignition key is turned to the on position No relays can be heard clicking when the ignition key is turned to the on position Is there an injector pulse at the injector?

25. No Start Vehicle has no spark at plugs The vehicle has a coil over plug ignition system The vehicle does not have battery voltage at the coil The vehicle does not have battery voltage at the injectors The fuel pump cannot be heard priming when the ignition key is turned to the on position No relays can be heard clicking when the ignition key is turned to the on position There is no injector pulse at the injector From this information it appears that the ECU is not operating. Check all fuses associated with the EFI system or ignition system. Are any of the fuse blown?

26. No Start Vehicle has no spark at plugs The vehicle has a coil over plug ignition system The vehicle does not have battery voltage at the coil The vehicle does not have battery voltage at the injectors The fuel pump cannot be heard priming when the ignition key is turned to the on position No relays can be heard clicking when the ignition key is turned to the on position Vehicle has no injection pulse None of the EFI or ignition fuses are blown. From this information it appears that the ECU is not operating. Is there power at any of the ECU pins?

27. No Start Vehicle has no spark at plugs The vehicle has a coil over plug ignition system The vehicle does not have battery voltage at the coil The vehicle does not have battery voltage at the injectors The fuel pump cannot be heard priming when the ignition key is turned to the on position No relays can be heard clicking when the ignition key is turned to the on position Vehicle has no injection pulse None of the EFI or ignition fuses are blown None of the ECU pins have battery voltage Can it be determined where the ECU receives battery voltage?

28. No Start Vehicle has no spark at plugs The vehicle has a coil over plug ignition system The vehicle does not have battery voltage at the coil The vehicle does not have battery voltage at the injectors The fuel pump cannot be heard priming when the ignition key is turned to the on position No relays can be heard clicking when the ignition key is turned to the on position Vehicle has no injection pulse None of the EFI or ignition fuses are blown None of the ECU pins have battery voltage It can not be determined where the ECU receives battery voltage Do you have a wiring diagram?

29. No Start Vehicle has no spark at plugs The vehicle has a coil over plug ignition system The vehicle does not have battery voltage at the coil The vehicle does not have battery voltage at the injectors The fuel pump cannot be heard priming when the ignition key is turned to the on position No relays can be heard clicking when the ignition key is turned to the on position Vehicle has no injection pulse None of the EFI or ignition fuses are blown None of the ECU pins have battery voltage It can not be determined where the ECU receives battery voltage The technician does not have a wiring diagram /????????????????????????????????? Contact EDEA // Cable tracer?

30. No Start Vehicle has no spark at plugs The vehicle has a coil over plug ignition system The vehicle does not have battery voltage at the coil The vehicle does not have battery voltage at the injectors The fuel pump cannot be heard priming when the ignition key is turned to the on position No relays can be heard clicking when the ignition key is turned to the on position Vehicle has no injection pulse None of the EFI or ignition fuses are blown None of the ECU pins have battery voltage It can not be determined where the ECU receives battery voltage The technician has a wiring diagram. Can you determine from the wiring diagram from where the ECU receives battery voltage?

31. No Start Vehicle has no spark at plugs The vehicle has a coil over plug ignition system The vehicle does not have battery voltage at the coil The vehicle does not have battery voltage at the injectors The fuel pump cannot be heard priming when the ignition key is turned to the on position No relays can be heard clicking when the ignition key is turned to the on position Vehicle has no injection pulse None of the EFI or ignition fuses are blown None of the ECU pins have battery voltage It can be determined where the ECU receives battery voltage Is there voltage at this source?

32. No Start Vehicle has no spark at plugs The vehicle has a coil over plug ignition system The vehicle does not have battery voltage at the coil The vehicle does not have battery voltage at the injectors The fuel pump cannot be heard priming when the ignition key is turned to the on position No relays can be heard clicking when the ignition key is turned to the on position Vehicle has no injection pulse None of the EFI or ignition fuses are blown None of the ECU pins have battery voltage It can be determined where the ECU receives battery voltage There is no voltage at the source the ECU receives battery voltage from Can it be determined where this source receives battery voltage from?

33. No Start Vehicle has no spark at plugs The vehicle has a coil over plug ignition system The vehicle does not have battery voltage at the coil The vehicle does not have battery voltage at the injectors The fuel pump cannot be heard priming when the ignition key is turned to the on position No relays can be heard clicking when the ignition key is turned to the on position Vehicle has no injection pulse None of the EFI or ignition fuses are blown None of the ECU pins have battery voltage It can not be determined where the ECU receives battery voltage The technician has a wiring diagram The technician cannot determine the ECU battery voltage source using the wiring diagram ???????????????????????????????????????????

34. No Start Vehicle has no spark at plugs The vehicle has a coil over plug ignition system The vehicle does not have battery voltage at the coil The vehicle does not have battery voltage at the injectors The fuel pump cannot be heard priming when the ignition key is turned to the on position No relays can be heard clicking when the ignition key is turned to the on position Vehicle has no injection pulse None of the EFI or ignition fuses are blown None of the ECU pins have battery voltage It can be determined where the ECU receives battery voltage There is no voltage at the source the ECU receives battery voltage from It can not be determined where the battery voltage source to the ECU receives it voltage from. Do you have a wiring diagram?

35. No Start Vehicle has no spark at plugs The vehicle has a coil over plug ignition system The vehicle does not have battery voltage at the coil The vehicle does not have battery voltage at the injectors The fuel pump cannot be heard priming when the ignition key is turned to the on position No relays can be heard clicking when the ignition key is turned to the on position Vehicle has no injection pulse None of the EFI or ignition fuses are blown None of the ECU pins have battery voltage It can be determined where the ECU receives battery voltage There is no voltage at the source the ECU receives battery voltage from It can not be determined where the battery voltage source to the ECU receives it voltage from. The technician has a wiring diagram From the wiring diagram can you determine where the ECU battery source receives its voltage from?

36. No Start Vehicle has no spark at plugs Vehicle has no injection pulse Vehicle has no voltage at the injector The fuel pump can be heard to prime when the ignition key is turned to the on position It can not be determined where the injector supply voltage source is Do you have a wiring diagram?

37. No Start Vehicle has no spark at plugs The vehicle has a coil over plug ignition system The vehicle does not have battery voltage at the coil The vehicle does not have battery voltage at the injectors The fuel pump cannot be heard priming when the ignition key is turned to the on position No relays can be heard clicking when the ignition key is turned to the on position None of the EFI or ignition fuses are blown Vehicle has no injection pulse There is power on some of the ECU pins Is there power on the ECU pins that are the main supply to the ECU?

38. No Start Vehicle has no spark at plugs The vehicle has a coil over plug ignition system The vehicle does not have battery voltage at the coil The vehicle does not have battery voltage at the injectors The fuel pump cannot be heard priming when the ignition key is turned to the on position No relays can be heard clicking when the ignition key is turned to the on position None of the EFI or ignition fuses are blown Vehicle has no injection pulse There is power on some of the ECU pins There is no power on the main supply pins of the ECU Can you determine where the main ECU power supply comes from?

39. No Start Vehicle has no spark at plugs The vehicle has a coil over plug ignition system The vehicle does not have battery voltage at the coil The vehicle does not have battery voltage at the injectors The fuel pump cannot be heard priming when the ignition key is turned to the on position No relays can be heard clicking when the ignition key is turned to the on position None of the EFI or ignition fuses are blown Vehicle has no injection pulse There is power on some of the ECU pins There is no power on the main supply to the ECU It can be determined where the ECU receives it main supply from Is there voltage at the source where the ECU receives its main supply?

40. No Start Vehicle has no spark at plugs The vehicle has a coil over plug ignition system The vehicle does not have battery voltage at the coil The vehicle does not have battery voltage at the injectors The fuel pump cannot be heard priming when the ignition key is turned to the on position No relays can be heard clicking when the ignition key is turned to the on position None of the EFI or ignition fuses are blown Vehicle has no injection pulse There is power on some of the ECU pins There is no power on the main supply to the ECU It can be determined where the ECU receives it main supply from There is no battery voltage at the source where the ECU receives its main supply Can you determine the reason why there is not voltage at this source?

41. No Start Vehicle has no spark at plugs The vehicle has a coil over plug ignition system The vehicle does not have battery voltage at the coil The vehicle does not have battery voltage at the injectors The fuel pump cannot be heard priming when the ignition key is turned to the on position No relays can be heard clicking when the ignition key is turned to the on position None of the EFI or ignition fuses are blown Vehicle has no injection pulse There is power on some of the ECU pins There is no power on the main supply to the ECU It can be determined where the ECU receives it main supply from There is no battery voltage at the source where the ECU receives its main supply It can be determined why there is no voltage at the souce that supplies the ECU battery voltage Repair this fault, is the vehicle fixed?

42. Success ! No Start Congratulations

43. No Start Vehicle has no spark at plugs The vehicle has a coil over plug ignition system The vehicle does not have battery voltage at the coil The vehicle does not have battery voltage at the injectors The fuel pump cannot be heard priming when the ignition key is turned to the on position No relays can be heard clicking when the ignition key is turned to the on position None of the EFI or ignition fuses are blown Vehicle has no injection pulse There is power on some of the ECU pins There is no power on the main supply to the ECU It can be determined where the ECU receives it main supply from There is no battery voltage at the source where the ECU receives its main supply It can be determined why there is no voltage at the source that supplies the ECU battery voltage The voltage source that supplies battery voltage to the ECU has been repaired but the vehicle is still not fixed Check for battery voltage at the ECU pins where the ECU receives its main supply from. Is there voltage at the ECU at is main supply pins?

44. No Start Vehicle has no spark at plugs The vehicle has a coil over plug ignition system The vehicle does not have battery voltage at the coil The vehicle does not have battery voltage at the injectors The fuel pump cannot be heard priming when the ignition key is turned to the on position No relays can be heard clicking when the ignition key is turned to the on position None of the EFI or ignition fuses are blown Vehicle has no injection pulse There is power on some of the ECU pins There is no power on the main supply to the ECU It can be determined where the ECU receives it main supply from There is no battery voltage at the source where the ECU receives its main supply It can be determined why there is no voltage at the source that supplies the ECU battery voltage The voltage source that supplies battery voltage to the ECU has been repaired but the vehicle is still not fixed There is still no battery voltage at the ECU main supply pins Check for continuity between the ECU voltage supply source and the ECU (Remember to disconnect the battery) Click on the question mark to explain why the battery needs to be disconnected. Is there continuity?

45. No Start Vehicle has no spark at plugs The vehicle has a coil over plug ignition system The vehicle does not have battery voltage at the coil The vehicle does not have battery voltage at the injectors The fuel pump cannot be heard priming when the ignition key is turned to the on position No relays can be heard clicking when the ignition key is turned to the on position None of the EFI or ignition fuses are blown Vehicle has no injection pulse There is power on some of the ECU pins There is no power on the main supply to the ECU It can be determined where the ECU receives it main supply from There is no battery voltage at the source where the ECU receives its main supply It can be determined why there is no voltage at the source that supplies the ECU battery voltage The voltage source that supplies battery voltage to the ECU has been repaired but the vehicle is still not fixed There is still no battery voltage at the ECU main supply pins There is no continuity between the ECU battery voltage source and the ECU Are you testing the correct pins on the ECU?

46. No Start Vehicle has no spark at plugs The vehicle has a coil over plug ignition system The vehicle does not have battery voltage at the coil The vehicle does not have battery voltage at the injectors The fuel pump cannot be heard priming when the ignition key is turned to the on position No relays can be heard clicking when the ignition key is turned to the on position None of the EFI or ignition fuses are blown Vehicle has no injection pulse There is power on some of the ECU pins There is no power on the main supply to the ECU It can be determined where the ECU receives it main supply from There is no battery voltage at the source where the ECU receives its main supply It can be determined why there is no voltage at the source that supplies the ECU battery voltage The voltage source that supplies battery voltage to the ECU has been repaired but the vehicle is still not fixed There is still no battery voltage at the ECU main supply pins There is continuity between the ECU battery supply and the ECU Reconnect the vehicle battery. Check

47. No Start Vehicle has no spark at plugs Vehicle has no injection pulse Vehicle has no voltage at the injector It can be determined where the injector supply source is Is there voltage at the injector supply source?

48. No Start Vehicle has no spark at plugs Vehicle has no injection pulse Vehicle has no voltage at the injector It can be determined where the injector supply source is There is voltage at the injector supply source Is there continuity from the injector supply source back to the injector?

49. No Start Vehicle has no spark at plugs Vehicle has no injection pulse Vehicle has no voltage at the injector It can be determined where the injector supply source is There is voltage at the injector supply source There is no continuity from the injector supply source back to the injector Trace the wire from the injector supply source back to the injector look for breaks or bad contacts?

50. No Start Vehicle has no spark no pulse and no voltage supply to the injector. Is the injector voltage source from the main relay?