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)

Or, hide this message: temporarily or permanently

Oscilloscope Patterns and Waveforms

Inspection Using An Oscilloscope (Reference)

SGC signal
- PCM terminal: 85 (+) - 86 (-)
- Oscilloscope setting: 0.5V/DIV (Y), 10ms/DIV (X), AC range
- Vehicle condition: idle after warm up