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

Information Bus: Description and Operation

SYSTEM OUTLINE

The multiplex communication system communicates among the body ECU, driver door ECU, front passenger door ECU, rear door LH ECU, rear door RH ECU and theft deterrent ECU and controls the given systems according to the signals from respective sensors or switches.