Operation CHARM: Car repair manuals for everyone.

Oscilloscope Patterns and Waveforms




CMP signal

PCM terminals
- 2S (+)-Negative battery terminal(-)

Oscilloscope setting
- 2 V/DIV (Y), 50 ms/DIV (X), DC range

Vehicle condition
- Idle after warm-up





CKP signal

PCM terminals
- 2W (+)-Negative battery terminal (-)

Oscilloscope setting
- 2 V/DIV (Y), 10 ms/DIV (X), DC range

Vehicle condition
- Idle after warm-up