Body Control Module

The various BCM input and output circuits are described in the corresponding functional areas indicated on the BCM electrical schematics. The Body Control Module functions include the following.

• Retained Accessory Power, RAP, Audio System only. Refer to RETAINED ACCESSORY POWER
• A/C compressor request. Refer to AIR TEMPERATURE DESCRIPTION AND OPERATION
• Remote Function Control. Refer to KEYLESS ENTRY SYSTEM DESCRIPTION AND OPERATION
• A/C cooling Fan. Refer to AIR DELIVERY DESCRIPTION AND OPERATION
• Exterior and interior lighting control, Refer to EXTERIOR LIGHTING SYSTEMS DESCRIPTION AND OPERATION
  • Daytime running lights (DRL)
  • Automatic lighting control
  • Fog lamps
• Interior lighting. Refer to INTERIOR LIGHTING SYSTEMS DESCRIPTION AND OPERATION
• Battery rundown protection (Inadvertent Power). Refer to INTERIOR LIGHTING SYSTEMS DESCRIPTION AND OPERATION
• Chimes Refer to AUDIBLE WARNINGS DESCRIPTION AND OPERATION
  • Key In Ignition
  • Head Lamps On
  • Seat Belt Not Fastened
  • Turn Signal On
  • Park Brake Warning
  • Door Ajar Warning
  • Check gauges
• Gauge control. Refer to INSTRUMENT PANEL CLUSTER (IPC) DESCRIPTION AND OPERATION
• Instrument cluster indicator control. Refer to INSTRUMENT PANEL CLUSTER (IPC) DESCRIPTION AND OPERATION
• Theft deterrent. Refer to THEFT SYSTEMS DESCRIPTION AND OPERATION
• Engine coolant level sensing. Refer to COOLING SYSTEM DESCRIPTION AND OPERATION
• Key-in-ignition sensing. Refer to AUDIBLE WARNINGS DESCRIPTION AND OPERATION
• Brake fluid level sensing. Refer to BRAKE WARNING SYSTEM DESCRIPTION AND OPERATION
• Parking brake state sensing. Refer to BRAKE WARNING SYSTEM DESCRIPTION AND OPERATION
• Rear compartment interface. Refer to POWER DOOR LOCKS DESCRIPTION AND OPERATION
• Horn interface. Refer to HORNS SYSTEM DESCRIPTION AND OPERATION
• Door lock interface. Refer to POWER DOOR LOCKS DESCRIPTION AND OPERATION
• Bulb Check. Refer to INSTRUMENT PANEL CLUSTER (IPC) DESCRIPTION AND OPERATION
• ETS -Pontiac Only. Refer to ABS DESCRIPTION AND OPERATION
• A/T Shift lock control. Refer to AUTOMATIC TRANSMISSION SHIFT LOCK CONTROL DESCRIPTION AND OPERATION