Operation CHARM: Car repair manuals for everyone.

Oscilloscope Patterns and Waveforms

Inspection Using An Oscilloscope (Reference)




CMP sensor signal
(+)
PCM terminals

- CMP sensor (left bank): 58 (+) - 25 (-)
- CMP sensor (right bank): 85 (+) - 25 (-)

Oscilloscope setting
- 1 V/DIV (Y), 20 ms/DIV (X), DC range

Vehicle condition
- Idle after warm up (no load)




(-)
PCM terminals

- CMP sensor (left bank): 59 (+) - 25 (-)
- CMP sensor (right bank): 86 (+) - 25 (-)

Oscilloscope setting
- 1 V/DIV (Y), 20 ms/DIV (X), DC range

Vehicle condition
- Idle after warm up (no load)