Body Control Module Functions: Notes

The Body Control Module (BCM) performs multiple body control functions. The BCM can control devices directly connected to its outputs based on input information obtained from sensors and switches that are directly connected to BCM, or by information from other vehicle systems connected to class 2 serial data link. BCM evaluates this information and controls certain body systems by commanding an output on or off.

The BCM is also capable of controlling other vehicle systems that are not directly wired to BCM. BCM does this by sending specific messages on the class 2 serial data link. Vehicle systems capable of performing a required function will respond to BCM message.

BCM controls following functions.

• Audible Warnings
• Automatic Door Locks
• Automatic Headlight Control
• Interior Lighting
• Keyless Entry
• Passlock(R) Theft Deterrent
• Retained Accessory Power