Body Control Module (BCM)

The BCM controls the operation of the perimeter alarm. The BCM receives direct input from all the ajar switches, the hood switch, keyless entry keypad, the door lock control switches, and the PATS transceiver. It receives messages from the TPM module over the MS-CAN  for the RKE feature.

If the perimeter alarm is armed and the BCM receives an input indicating an unauthorized entry into the vehicle, or the ignition is turned to the RUN position without a programmed PATS key, the BCM activates the perimeter alarm. When the perimeter alarm is activated, the horn sounds and both the turn signals and courtesy lights flash in regular intervals. REFER to BODY CONTROL MODULE (BCM) .