Grand Caravan V6-3.8L VIN L (2007)
Body Control Module: Description and Operation
Body Control Module
Description
DESCRIPTION
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.
Operation
BODY CONTROL MODULE
The body control module (BCM) supplies vehicle occupants with visual and audible information and controls various vehicle functions. To provide and
receive information, the module is interfaced to the vehicle's serial bus communications network (PCI). This network consists of the powertrain control
module (PCM), the engine control module (ECM) diesel, the mechanical instrument cluster (MIC), the front control module (FCM), the occupant
restraint controller (ORC), the occupant classification module (OCM), the overhead console, the ABS module, the hands free module (HFM), the park
assist module, the HVAC control module (ATC & MTC), the power sliding door (Left & Right) modules (PSD), the power liftgate module (PLG), the
Audio system (which includes the Radio, DVD, CD Changer and Amplifier), the memory seat/mirror/ adjustable pedals module (MSMAPM), the RKE/
thatcham alarm module (export), the transmission control module (Diesel only) and the sentry key remote entry module (SKREEM). The BCM is
operational when battery power is supplied to the module.
The body control module provides the following features:
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Power Door Locks
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Automatic Door Lock
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Door Lock Inhibit
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Central Locking (with VTSS Only)
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Battery Protection
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The BCM will automatically 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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Chime Driver
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Compass/Minitrip Support
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Interior Lighting (Courtesy/Reading Lamps)
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BCM 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 Autoheadlamps)
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Automatic Headlamps (with electrochromatic mirror)
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Illuminated Entry
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Fade to Off
This feature dims the interior lighting (courtesy lamps) gradually if the BCM does not receive any new inputs that would cause the interior lamps
to remain on.
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PWM Instrument Panel Dimming
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Door Lock Inhibit
This feature disables the door lock functions if the key is in the ignition and either front door is ajar. Pressing the RKE lock/unlock button under
these conditions, result in normal lock/unlock activation.
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Power Sliding Door Switch Inputs
The BCM has 4 switch inputs for the power sliding door feature: Located in the overhead console are the Left and Right side sliding door switches
to activate either or both sliding doors under the proper conditions. Also there are B-Pillar switches located on the Left and Right B-pillar posts.
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Power Liftgate Switch Input
The BCM has 1 Liftgate switch input located in the overhead console
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Power Lockout Switch Input
