Grand Caravan V6-3.3L VIN R (2005)
Body Control Module: Description and Operation
System Description
IDENTIFICATION OF SYSTEM
The vehicle systems that are part of the body system are:
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Adjustable Pedal System (APS)
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Airbag System
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Audio
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Automatic Temperature Control
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Cabin Heater
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Chime
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Communication
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Door Ajar System
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Electrically heated system
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Exterior lighting
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Instrument Cluster
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Interior Lighting
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Manual Temperature Control
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Memory Seat
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Overhead Console
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Park Assist
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Power Door Lock/RKE
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Power Folding Mirrors
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Power Sliding Doors
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Power Liftgate
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Power windows
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Telecommunications (hands free phone)
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Tire Pressure Monitor System (TPMS)
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Vehicle Theft Security System (VTSS)
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Windshield Wiper and Washer
SYSTEM DESCRIPTION AND FUNCTIONAL OPERATION
The body system on the 2005 RS and RG consists of a combination of modules that communicate over the PCI bus (Programmable Communication
Interface multiplex system). Through the PCI bus, information about the operation of vehicle components and circuits is relayed quickly to the
appropriate modules. All modules receive all the information transmitted on the bus even though a module may not require all information to perform its
function. It will only respond to messages addressed to it through binary coding process. This method of data transmission significantly reduces the
complexity of the wiring in the vehicle and the size of wiring harnesses. All of the information about the functioning of all the systems is organized,
controlled, and communicated by the PCI bus, which is described in the Communication Section of this general information.
The Body Control Module (BCM) is located in the passenger compartment, attached to the bulkhead underneath the left side of 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) supplies vehicle occupants with visual and audible information and controls various vehicle functions. To provide and
receive information, the BCM is interfaced to the vehicle's serial bus communications network, referred to as the Programmable Communications
Interface (PCI) bus.
This network consists of the;
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Powertrain Control Module (PCM)
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Transmission Control Module (TCM)
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Mechanical Instrument Cluster (MIC)
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Occupant Restraint Controller (ORC)
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Compass/Mini-Trip Computer (CMTC)
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Electronic Vehicle Information Center (EVIC)
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Controller Antilock Brake (CAB)
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HVAC Control Module
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Sliding Door Control Modules (driver and passenger side doors)
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Power Liftgate Module (PLG)
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Audio system equipped with RAZ, RBU, RBK, and RBB radios.
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Sentry Key Remote Entry Module (SKREEM).
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Side Impact Airbag Control Module (SIACM)
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Memory Seat Module (MSM)
