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 or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Oscilloscope Patterns and Waveforms

Inspection Using An Oscilloscope (Reference)

Ignition coil control signals

- PCM terminals
- No.1 cylinders: 52 (+) - 26 (-)
- No.2 cylinders: 104 (+) - 26 (-)
- No.3 cylinders: 102 (+) - 26 (-)
- No.4 cylinders: 78 (+) - 26 (-)
- No.5 cylinders: 103 (+) - 26 (-)
- No.6 cylinders: 101 (+) - 26 (-)

- Oscilloscope setting
- 5 V/DIV (Y), 20 ms/DIV (X), DC range
- Vehicle condition
- Idle after warm up (no load)