Pacifica V6-3.8L VIN L (2005)
Body Control Module: Description and Operation
Body Control Module Description
CAUTION: Do not swap BCM's between vehicles or with BCM's off the shelf.
BCM Location
The Body Control Module (BCM) is located on the bulkhead left side, underneath the instrument panel. The BCM utilizes integrated circuitry and
information carried on the Programmable Communications Interface (PCI) data bus network along with many hard wired inputs to monitor many sensor
and switch inputs throughout the vehicle. In response to those inputs, the internal circuitry and programming of the BCM allow it to control and integrate
many electronic functions and features of the vehicle through both hard wired outputs and the transmission of electronic message outputs to other
electronic modules in the vehicle over the PCI data bus.
The Body Control Module (BCM) is operational when supplied with 12v battery power. The BCM controls various vehicle functions. It also supplies
information to the instrument cluster to provide visual and audible information to the vehicle occupants. To provide and receive information, the module
interfaces with the vehicle's Programmable Communication Interface (PCI) data bus network. This network consists of the:
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Integrated Power Module (IPM) - which incorporates the Power Distribution Center (PDC) and the Front Control Module (FCM) into one
assembly.
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Next Generation Controller (NGC) - which incorporates the Powertrain Control Module (PCM) and the Transmission Control Module (TCM)
into one module.
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Instrument Cluster (IC)
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Electronic Vehicle Information Center (EVIC)
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Occupant Restraint Controller (ORC)
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Compass/Mini-Trip Computer (CMTC)
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Overhead Console
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Controller Antilock Brake (CAB)
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Automatic Temperature Control Module (ATC)
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Power Liftgate Module (PLGM)
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Audio system
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Memory/Heated Seat Adjustable Pedal Module
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Sentry Key Remote Entry Module (SKREEM) - which performs the functions of the previous two modules - Remote Keyless Entry (RKE) and
Sentry Key Immobilizer Module (SKIM).
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Driver Door Module (DDM) and the Passenger Door Module (PDM)
The BCM provides:
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A battery protection feature. - The BCM will send a message to the IPM to turn off all exterior lamps after 3 minutes and all interior lamps after
15 minutes after the ignition is turned off, if they are not turned off by the driver.
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Compass/Minitrip support.
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Interior lighting (courtesy/reading lamps).
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Diagnostic reporting.
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Electronic liftgate release (with power door locks).
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Exterior lighting.
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Headlamp time delay (with/without auto headlamps).
