Operation CHARM: Car repair manuals for everyone.

Inspection of ECM and Its Circuits 2

Inspection of ECM and Its Circuits

11. Reference waveform No. 11







Heated oxygen sensor signal (Bank 1) at engine running

12. Reference waveform No. 12







Heated oxygen sensor signal (Bank 2) at engine running

13. Reference waveform No. 13







IAC valve signal

14. Reference waveform No. 14







CMP sensor signal at engine idling

15. Reference waveform No. 15







CMP sensor signal at engine idling

16. Reference waveform No. 16







VSS signal (1) at 60 km/h (38 mph) for A/T vehicle

17. Reference waveform No. 17







VSS signal (1) at 60 km/h (38 mph) for A/T vehicle

18. Reference waveform No. 18







EVAP canister purge valve signal

19. Reference waveform No. 19







Fuel injector signal at engine idling

20. Reference waveform No. 20







Fuel injector No.2 signal (4) at engine idling

21. Reference waveform No. 21







Fuel injector No.1 signal (4) at engine idling

22. Reference waveform No. 22







Heated oxygen sensor heater signal (Bank 1) at engine idling

23. Reference waveform No. 23







Heated oxygen sensor heater signal (Bank 2) at engine idling

24. Reference waveform No. 24







IMT vacuum solenoid valve signal (1) at engine racing

25. Reference waveform No. 25







Fuel injector No.4 signal (4) at engine idling