Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the logical successor to CHARM, I recommend you try it!

Link: lemon-manuals.la

Oscilloscope Patterns and Waveforms

Inspection Using An Oscilloscope (Reference)

Fan control signal
PCM terminals
- 44 (+) - 25 (-)

Oscilloscope setting
- 2 V/DIV (Y), 0.2 ms/DIV (X), DC range

Vehicle condition
- Idle after warm up (no load)