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

Manufacturer Specific Pattern

Vehicle speed signal

- PCM terminal: 58 (+) <-> 24(-)
- Oscilloscope setting: 1 mV/DIV (Y), 25 ms/DIV(X), DC range
- Vehicle condition: Driving speed 60 kph [37 mph]