Operation CHARM: Car repair manuals for everyone.

Oscilloscope Patterns and Waveforms

Inspection Using An Oscilloscope (Reference)

TP signal




- PCM terminals
- 87(+) - 26(-)

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

- Vehicle condition
- Idle after warm up (no load)