Body Control Module (BCM)

The Body Control Module (BCM) controls all the CTD system functions. When the BCM detects an unauthorized entry, the BCM applies ground to the following components:
^ The horn relay.
^ The park lamp relay.
^ the low beam relay.

The BCM applies ground once per second for approximately 3 minutes, or until a valid input to disarm the system is received by the BCM. The BCM may also arm and disarm the CTD system. When the BCM receives a door lock/unlock signal from the key fob transmitter. The BCM perform the appropriate door lock/unlock command. The BCM performs one of the following functions:
^ Locks the doors and enters the armed mode.
^ Unlocks the doors and enters the standby mode.