BCM Functions

The Body Control Module (BCM) is capable of performing multiple body control functions. The BCM outputs control the systems that are directly connected to the BCM. The BCM controls the outputs using this input information received from the sensors and the switches directly connected to the BCM. The BCM also borrows information from other systems on the serial data line in order to control the outputs. The BCM evaluates this information and commands an Output ON or OFF in order to control certain body systems. The BCM also commands other systems to control systems that are not directly wired to the BCM. The BCM accomplishes this by sending specific messages on the serial data line. The system capable of performing this function will respond to the message.

The BCM is capable of performing the following functions:
^ Bulb over voltage protection
^ Door ajar status
^ Exterior light control
- Approach lighting
- Backup lights
- Daytime Running Lights (DRL)
- Headlights flash-to-pass feature
- Front fog lights
- Front turn signal monitoring
- Rear fog lamps (export only)
^ Hatch ajar status
^ Hatch release control
^ Heated mirror control
^ Hood ajar status
^ Horn relay
^ Interior light control
- Center console lights
- Courtesy lights
- HVAC illumination
- Illuminated entry feature
- Lower courtesy lights
- PRNDL display
^ Key-in-ignition status
^ Load shed control
^ Monitored loads control
^ Pass-Key(R) (Personalized Automotive Security System)
^ Power mode master
^ Rear defogger control
^ Steering column lock/unlock control
^ TCS activation control
^ Universal Theft Deterrent (UTD)
^ Vehicle configuration (RPO codes)