Body Control Module (BCM)

The Body Control Module (BCM) is battery fed. The BCM is always monitoring the transmitter signal. When the BCM receives the correct transmitter signal the following actions occur:
1. A transistor driver energizes the correct lock control relay coil.
2. The transistor driver will arm the universal theft-deterrent, if equipped.
3. The doors lock.

The BCM also regulates which lock control relays will be energized in order to perform the following operations:
^ Unlock the doors
^ Release the rear compartment lift window panel
^ Disarm the universal theft-deterrent, if equipped For replacement of the BCM, refer to Body Control Module Replacement Service and Repair