BCM Functions

The Body Control Module (BCM) is capable of accomplishing multiple body control functions. Systems that are directly connected to the BCM are controlled by the BCM's outputs. The BCM can control its outputs based upon input information it obtains from sensors and switches that are directly connected to the BCM, or by borrowing information from other systems on the serial data link. The BCM evaluates this information and controls certain body systems by commanding an output on or off. The BCM is also capable of commanding other systems to control functions that are not directly wired and/or controlled by the BCM. The BCM accomplishes this by sending specific messages on the serial data link. The system capable of performing this function will respond to the message.

The BCM is capable of performing the following functions:
Reminder/Warning Functions
^ Seat Belt Reminder
^ Key In Ignition Reminder
^ Headlight Reminder
^ Park Brake Reminder
^ Auxiliary Audible Reminder
^ Check Gauges Alarm
^ Overspeed Warning
^ Turn Signal Reminder
^ Customization/Warnings/Diagnostics Feedback

Interior Illumination Functions
^ Theater Dimming
^ Interior Lamp Control
^ Delayed Illumination
^ Exit Illumination
^ Illumination on Remote Activation
^ Battery Rundown Protection

Locking Functions
^ All Door Unlock
^ All Door Lock
^ Lockout Prevention
^ Automatic Door Lock
^ Automatic Door Unlock
^ Automatic Door Relock
^ Last Door Closed Locking
^ Feature Customization

Remote Function Actuation Functions
^ Remote Driver Door Unlock
^ Remote All Door Unlock
^ Remote All Door Lock
^ Remote Activation Verification
^ Remote Alarm
^ RFA Transmitter Programming/Diagnostic Mode

Miscellaneous Functions
^ Park Brake Telltale Control
^ Door Ajar Telltale Control
^ Fog Lamp Enable Control
^ Day/Night Mode Sensing
^ Twilight Sentinel Headlamp Control
^ Overvoltage Protection
^ Retained Accessory Power
^ Transmission Shift Select Function
^ Vehicle Anti-Theft (PASS-Key (R) II)
^ Vehicle Configuration Storage
^ Serial Data Communications
^ Calibrations
^ Diagnostic Operation and ALDL Modes