Body Control Module Functions
WARNING: This page is about a different car, the 2002 Chevrolet Monte Carlo, 2002 Chevrolet Impala, 2001 Chevrolet Monte Carlo, and 2001 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
Body Control Module (BCM) performs multiple body control functions. 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 BCM.
- Information received from other vehicle systems connected to class 2 serial data link.
BCM evaluates this information and controls certain body control systems by commanding outputs on or off.
BCM is also capable of controlling other vehicle systems that are not directly wired to BCM. BCM does this by sending specific messages on class 2 serial data link. Vehicle system capable of performing a required function will respond to BCM message.
BCM controls following functions:
- Audible warnings.
- Interior lighting.
- Automatic door locks.
- Automatic headlight control.
- Keyless entry (if equipped).
- Passlock theft deterrent.
- Content theft deterrent.
- Retained Accessory Power (RAP).