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

Miscellaneous Functions

^ BRAKE indicator lamp control: The BCM controls the state of the BRAKE indicator lamp based on the status of the parking brake switch by sending a message to the instrument cluster via the Class 2 serial data link.
^ Fog lamp enable control. The BCM controls fog lamp operation, based on the status of the ignition switch.
^ Day/night mode sensing: The BCM determines the ambient light operating mode. The BCM then communicates the information to the Instrument Cluster and Powertrain Control Module (PCM) via the Class 2 serial data link.