Body Control Module

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

• A/C compressor request - Refer to Air Temperature Description and Operation in HVAC Systems-Manual.
• A/C cooling fan - Refer to Air Delivery Description and Operation in HVAC Systems-Manual.
• Battery rundown protection (Inadvertent Power) - Refer to Interior Lighting Systems Description and Operation in Lighting Systems.
• Brake fluid level sensing - Refer to DESCRIPTION & OPERATION in Disc & Drum in Brakes.
• Bulb check - Refer to Instrument Panel Cluster (IPC) Description and Operation in Instrument Panel, Gages, and Console.
• Chimes - Refer to Audible Warnings Description and Operation in Instrument Panel, Gages, and Console.
  • Check gages
  • Door ajar warning
  • Headlamps ON
  • Key-in-ignition
  • Oil reset
  • Park brake warning
  • Seat belt not fastened
  • Turn signal ON
• Door lock interface - Refer to Power Door Locks Description and Operation in Doors.
• Electronic steering control (ESC) - Refer to Power Steering System Description and Operation in Power Steering System.
• Engine coolant level sensing - Refer to Cooling System Description and Operation in Engine Cooling.
• Exterior and interior lighting control - Refer to Exterior Lighting Systems Description and Operation in Lighting Systems.
  • Automatic lighting control
  • Daytime running lights (DRL)
  • Fog lamps
  • Park brake lights
  • Turn hazard lamps
• Gage control - Refer to Instrument Panel Cluster (IPC) Description and Operation in Instrument Panel, Gages, and Console.
• Horn interface - Refer to Horns System Description and Operation in Horns.
• Instrument cluster indicator control - Refer to Instrument Panel Cluster (IPC) Description and Operation in Instrument Panel, Gages, and Console.
• Interior lighting - Refer to Interior Lighting Systems Description and Operation in Lighting Systems.
• Key-in-ignition sensing - Refer to Audible Warnings Description and Operation in Instrument Panel, Gages, and Console.
• Parking brake state sensing - Refer to DESCRIPTION & OPERATION in Disc & Drum in Brakes.
• Retained Accessory Power (RAP) - Refer to Retained Accessory Power (RAP) Description and Operation in Retained Accessory Power.
• Rear compartment interface - Refer to Power Door Locks Description and Operation in Doors.
• Rear defogger - Refer to Rear Window Defogger Description and Operation in Stationary Windows.
• Remote function control - Refer to Keyless Entry System Description and Operation in Keyless Entry.
• Seat belt use sensing - Refer to Seat Belt System Description and Operation in Seat Belts.
• Theft deterrent - Refer to Theft Systems Description and Operation in Theft Deterrent.
• Washer solvent level sensing - Refer to Wiper/Washer System Description and Operation in Wipers/Washer Systems.
• Wiper/Washer - Refer to Wiper/Washer System Description and Operation in Wipers/Washer Systems.