Operation CHARM: Car repair manuals for everyone.

Oscilloscope Patterns and Waveforms

Inspection Using An Oscilloscope (Reference)

IGT control signal




- PCM terminal:
- 3F(+) <=> 4A(-)
- 31(+) <=> 4A(-)

- Oscilloscope setting: 1.0 V/DIV (Y), 50 ms/DIV (X), DC range
- Vehicle condition: Idling after warm-up.