Body Control Computer

The Body Control Module (BCM) is part of junction block located under left side of instrument panel on JA, JX and NS models. On LH models, BCM is mounted to junction block located behind left end cap of instrument panel. BCM stores odometer information for electronic instrument cluster display and provides power and ground for a variety of systems.

The BCM on all models except Concorde, Intrepid, LHS and 300M is the only module that has the capability of providing both "bias" and "termination" on the CCD bus system. See CCD BUS SYSTEM. Systems are monitored by BCM through voltage drops.

Vehicle may be equipped with either a premium or base model BCM. Base body control computer is used on vehicles with a mechanical instrument cluster.

On JA body, premium BCM is used on vehicles with a trunk ajar switch. On LH body, premium BCM can be identified by the presence of either the Automatic Temperature Control (ATC) system, Overhead Travel Information System (OTIS), or both.