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)

Or, hide this message: temporarily or permanently

Multiplex Communication System - BEAN

System Outline

The multiplex communication system communicates among the body ECU, sub body ECU, theft deterrent ECU, power window master SW, power window control SW front RH, power window control SW rear LH, power window control SW rear RH, mayday ECU, moon roof control ECU, auto wiper ECU, seat ECU, remote control mirror ECU, rain sensor and tilt and telescopic ECU, among the combination meter, A/C control assembly and gateway ECU and controls the systems according to the signals from respective sensors or switches.

For details, please refer to the new car features.