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







- Vehicle speed (km/h, mph) from MIU (540)
- Identification number from MIU (540)
- SID buttons (Night Panel) from SID (541)
- Outdoor temperature (°C) from SID (541)
- Ignition +B (on/off) from DICE (628)
- Ignition +15 (on/off) from DICE (628)
- Ignition +54 (on/off) from DICE (628)
- Ignition +50 (on/off) from DICE (628)
- Wheel speed RL from ESP (671)
- Seat belt, driver (connected/not connected) from SRS (331)
- Seat belt, passenger (connected/not connected) from SRS (331)
- Engine has started (on/off) from Trionic 7 (430)
- Diagnostics communication

For a further description of the control module bus input information, see

For a further description of diagnostics, see Bus and diagnostics communication