Introduction

The Body Control Module (BCM) operates the Vehicle Theft Security System (VTSS). The BCM monitors the vehicle doors, hood, liftglass in the liftgate, liftgate, and ignition for unauthorized operation.

When the BCM detects unauthorized operation, it operates the horn repeatedly for three minutes and flashes the headlamps and tail lamps for 15 minutes. Also, the engine will not operate until the VTSS is disarmed.

The vehicle operator can activate the alarm by pushing the panic button on the Remote Keyless Entry (RKE) transmitter. When the operator pushes the panic button, the radio frequency receiver in the Passenger Door Module (PDM) receives the PANIC signal and broadcasts a message on the CCD bus. When the BCM sees the PANIC message on the CCD bus, it operates the horn repeatedly, turns on the interior lights, and flashes the headlamps and tail lamps. The BCM activates the panic alarm for three minutes unless the operator starts the vehicle and drives at a speed above 15 MPH or pushes the panic button on the RKE transmitter a second time.

When the ignition switch is in the START or RUN position, it connects circuit A1 from fuse 8 in the PDC to circuit A21. Circuit A21 powers circuit F99 through PDC fuse 18. Circuit F99 feeds the BCM.

In the ACCESSORY or RUN position, the ignition switch connects circuit A1 to circuit A31. Circuit A31 powers circuit V23 through fuse 3 in the junction block. Circuit V23 feeds the BCM.

The Body Control Module (BCM) used in this vehicle provides a communication interface with other controllers and modules. The BCM also controls various vehicle functions. Circuit operation of specific systems or components controlled by the BCM are found in wiring diagram section covering the component or system.

The BCM provides or supports the following features:
- A/C Select Switch Status
- Ambient Temperature
- Automatic Funeral Mode
- Automatic Headlamp Control
- Chime
- Courtesy Lamps with Time Out
- Door, Hood or Liftgate Ajar Status
- Door Lock Inhibit
- Electronic Odometer
- Electronic Vehicle Information Center
- Fog Lamp Control
- Headlamp Delay
- High Beam Indicator
- Illuminated Entry
- Instrument Panel Dimming
- Intermittent Wiper Control
- Liftgate Courtesy Lamp Disable
- Mechanical Instrument C1uster
- Rear Window Defogger Control
- Remote Radio Control
- Seat Belt Reminder
- Speed Sensitive Intermittent Wipe Control
- Vehicle Theft Security System

The BCM communicates with the following controllers and modules over the CCD bus:
- Automatic Temperature Control (ATC) Module
- Compass (Overhead Console)
- Driver Door Module (DDM)
- Mechanical Instrument C1uster
- Memory Seat Module
- Passenger Door Module (PDM)
- Powertrain Control Module
- Vehicle Information Center
- Radio

Circuit A250 from fuse 11 in the Power Distribution Center (PDC) powers circuit F75 through fuse 7 in the junction block. Circuit F75 supplies battery voltage to the BCM. Circuits Z1 and Z2 provide ground for the BCM.

GENERAL INFORMATION
A Body Control Module (BCM) is used on this model to control and integrate many of the electronic functions and features included on the vehicle. 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 wire 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.

Some of the functions and features that the BCM supports or controls, include:
- Chimes
- Automatic headlamp control
- Headlamp delay
- Headlamps on with ignition off and driver door open warning
- Key in ignition with ignition off and driver door open warning
- Automatic funeral or parade mode
- Panel lamp dimming
- Vehicle Theft Security System (VTSS)
- Vehicle immobilizer system
- Illuminated entry
- Heated rear window and heated outside mirror control
- Intermittent wipe control
- Monitoring and transmitting door, hood, liftgate, liftglass ajar data
- Monitoring and transmitting outside ambient temperature data
- Monitoring and transmitting air conditioning select switch data
- Courtesy lamp time-out
- Gulf coast country over-speed warning
- Door lock inhibit
- Electronic odometer and trip odometer
- Brake warning lamp
- Check gauges lamp
- High beam indicator lamp
- Seatbelt reminder lamp and chime
- Speed sensitive intermittent wipe
- Fog lamp control
- Electromechanical instrument cluster
- BCM diagnostic support
- Vehicle Information Center (VIC) support
- Rolling door locks
- Horn chirp upon door lock with Remote Keyless Entry (RKE)(programmable)
- Low fuel warning chime (programmable)
- Headlights on with wipers (programmable - with automatic headlamps only)

The BCM is mounted under the driver side outboard end of the instrument panel, behind the instrument panel support armature and below the outboard switch pod. For diagnosis of the BCM or the CCD data bus, refer to the proper Computers and Control Systems/Body Control Module/Testing and Inspection Procedures. The BCM can only be serviced by an authorized electronic repair station. Refer to the latest Warranty Policies and Procedures for a current listing of authorized electronic repair stations.

SYSTEM OPERATION
A Body Control Module (BCM) is used on this model to control and integrate many of the electronic functions and features included on the vehicle. 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 wire 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 remote radio switches on vehicles so equipped. The BCM receives hard. wired resistor multiplexed inputs from the remote radio switches. The programming in the BCM allows it to process those inputs and send the proper messages to the radio over the CCD data bus to control the radio volume, station seek, and preset station advance functions.

The BCM is mounted under the driver side outboard end of the instrument panel, behind the instrument panel support armature and below the outboard switch pod. Refer to Instrument Panel Systems for the removal and installation procedures. For diagnosis of the BCM or the CCD data bus, refer to the proper Computers and Control Systems/Body Control Module/Testing and Inspection Procedures. The BCM can only be serviced by an authorized electronic repair station. Refer to the latest Warranty Policies and Procedures for a current listing of authorized electronic repair stations.