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 spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la
If it fails: lemon-manuals.org.ua

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Oscilloscope Patterns and Waveforms

Inspection Using An Oscilloscope (Reference)

Vehicle speed signal
- PCM terminal: 79 (+) - 22 (-)
- Oscilloscope setting: 1 V/DIV (Y), 25 ms/DIV(X), DC range
- Vehicle condition: Driving speed 60 km/h [37 mph]