BCM Functions

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 two sources:

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

  The BCM evaluates this information and controls certain body control systems by commanding outputs on or off.

  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 vehicle system capable of performing a required function will respond to the BCM message.

  The BCM controls these functions:

• Audible warnings.
• Interior lighting, refer to INTERIOR LIGHTING SYSTEMS DESCRIPTION & OPERATION .
• Automatic door locks, refer to REMOTE KEYLESS ENTRY SYSTEM .
• Automatic headlamp control, refer to EXTERIOR LIGHTING SYSTEMS DESCRIPTION & OPERA .
• Keyless entry (AUO option), refer to REMOTE KEYLESS ENTRY SYSTEM .
• Passlock theft deterrent, refer to PASSLOCK(tm) ANTI-THEFT SYSTEM .
• Content theft deterrent, refer to CONTENT THEFT DETERRENT SYSTEM .
• Retained Accessory Power (RAP), refer to RETAINED ACCESSORY POWER (RAP) DESCRIPTION & OPERATION .