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

Principles of Operation




Body Control Module B (BCM-B)

Principles of Operation

The Body Control Module B (BCM-B) controls multiple vehicle systems. The BCM-B is connected to the Medium Speed Controller Area Network (MS-CAN).

The BCM-B has programmable parameters that can be programmed using the scan tool. Refer to Information Bus for programmable parameters in the BCM-B.

The BCM-B is located in the right side of the luggage compartment and is behind the audio subwoofer amplifier, which are both bolted to the BCM-B bracket.