Body Control Module Functions

A Body Control Module (BCM) is used on this model to control and integrate many of the vehicle's electrical functions and features. The BCM contains a central processing unit and interfaces with other modules in the vehicle on the Chrysler Collision Detection (CCD) data bus network.

The CCD data bus network allows the sharing of sensor information. This helps to reduce wiring harness complexity, reduce internal controller hardware, and reduce component sensor current loads. At the same time, this system provides increased reliability, enhanced diagnostics, and allows the addition of many new feature capabilities.

One of the functions and features that the BCM supports and controls, is the Vehicle Theft Security System (VTSS). In addition to the information received on the CCD data bus, the BCM receives hard wired inputs from the door ajar, door lock cylinder, hood, liftgate ajar, liftgate lock cylinder, and liftglass ajar switches. In its role as the VTSS controller, the programming in the BCM allows it to process the information from all of its inputs and send control outputs to the auto headlamp relay, horn relay, park lamp relay, powertrain control module, and the security set lamp.

The BCM is mounted under the left end of the instrument panel, behind the instrument panel support armature and below the left switch pod.