BCM Functions

The Body Control Module (BCM) performs multiple body control functions. The BCM can control devices directly connected to it outputs based on input information. The BCM evaluates this information and controls certain body control systems by commanding outputs on or off. The BCM control inputs can be:

• Sensors and switches that are directly connected to the BCM.
• Class 2 serial data received from other vehicle systems connected to the class 2 serial data link.

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

The BCM controls these functions:

• Audible warnings, refer to AUDIBLE WARNINGS DESCRIPTION & OPERATION .
• Automatic door locks, refer to POWER DOOR LOCKS DESCRIPTION & OPERATION .
• Automatic headlamp control, refer to EXTERIOR LIGHTING SYSTEMS DESCRIPTION & OPERATION .
• Interior lighting, refer to INTERIOR LIGHTING SYSTEMS DESCRIPTION & OPERATION .
• Keyless entry (AUO option), refer to KEYLESS ENTRY SYSTEM DESCRIPTION & OPERATION .
• Passlock theft deterrent, refer to THEFT SYSTEMS DESCRIPTION & OPERATION .
• Retained Accessory Power (RAP), refer to RETAINED ACCESSORY POWER (RAP) DESCRIPTION & OPERATION .