Operation CHARM: Car repair manuals for everyone.
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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Control Module Inputs, Bus



Control Module Inputs, Bus







- Engine speed information from ECM
- Coolant temperature information from ECM
- Fuel Consumed Since Start from ECM
- Turbo boost gauge from Trionic
- CHECK ENGINE indicator lamp from ECM
- CRUISE indicator lamp from ECM
- Indication Shift-up on the information display, from Trionic
- CHECK GEARBOX indicator lamp from TCM (502)
- Indication SPORT on the information display, from TCM (502)
- Selector lever indicator from TCM (502)
- ABS warning lamp from ESP (671)
- ESP OFF indicator lamp from ESP (671)
- Indication ESP on the information display, from ESP (671)
- AIRBAG warning lamp from SRS (331)
- Rheostat level from the SID control module (541)
- Rheostat Night Panel from the SID control module (541)
- NIGHT PANEL from the SID control module (541)
- Display lighting value from the SID control module (541)
- Cabin light intensity value from the SID control module (541)
- Steering wheel location from TWICE (632)
- Indication "Door open" on the information display, from TWICE (632)
- LH direction indicator lamp from DICE (628)
- RH direction indicator lamp from DICE (628)
- Rear fog light indicator lamp from DICE (628)
- Glow indicator lamp from ECM (diesel)