BCM Functions

The Body Control Module (BCM) is capable of accomplishing multiple body control functions. Components directly connected to the BCM are controlled by the BCM's outputs. The BCM can control its outputs based on input information it obtains from sensors and switches that are directly connected to the BCM, or by borrowing information from other vehicle systems connected to the Class 2 serial data link. The BCM evaluates this information and controls certain body systems by commanding an output on or off.

The BCM is also capable of commanding other vehicle systems to control functions that are not directly wired and/or controlled by the BCM. The BCM accomplishes this task by sending specific messages on the Class 2 serial data link. The vehicle system capable of performing such function will respond to the BCM message.

The BCM performs these functions:
^ Audible warnings.
^ Interior lighting.
^ Automatic door locks.
^ Keyless entry.(AUO option)
^ Passkey theft deterrent.
^ Retained Accessory Power (RAP)

For a description of the RPO Code(s) shown in this article/images refer to the RPO Code List found at Vehicle/Application ID Application and ID