The Content Theft Deterrent (CTD) system (UA6) contains the following components:

The Body Control Module (BCM) controls the content theft deterrent system.

The BCM monitors the status of the following components:

The BCM operates the following components, according to the chosen mode of operation:

Complete the following steps in order to determine the BCM type installed in the vehicle:

1. Turn the ignition switch to the OFF position.
2. Remove the MALL PGM fuse.
3. Turn the ignition switch to the ACC position.

The seat belt indicator flashes and the chime sounds 2, 3 or 4 times. The number of chimes indicates the BCM type that is installed in the vehicle.

Verify that a BCM type 4 is installed on a vehicle with RPO UA6. Refer to the Service Parts Identification Label and the RPO Code list.

If the vehicles has RPO UA6 but is not equipped with BCM type 4, install a BCM type 4.

The door key cylinder locks have integral switches that signal the BCM to disarm the content theft deterrent system.

The rear compartment lock cylinder has an integral switch that sends a signal to the BCM when the rear compartment lock cylinder is removed from the rear compartment lid.

The BCM controls the operation of the security LED. The security LED may be in one of the following modes:

1. On
2. Off
3. Flashing slow
4. Flashing fast

The security LED mode depends on the content theft deterrent system mode.

The shock sensor sends a tamper signal to the BCM if an impact to the vehicle occurs which is considered to be a vehicle tamper condition or causes glass breakage.

The BCM controls the theft deterrent relay. The headlamps turn on during certain modes of operation.