Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Body Control Module: Notes
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 (the Chrysler Collision Detection bus, or CCD bus). This network consists of the powertrain control module (PCM), the transmission control module (TCM), the electro/mechanical instrument cluster (MIC), Compass Mini-Trip Computer (CMTC), the radio (RBN) and the airbag control module (ACM). The BCM is operational when battery power is supplied to the module. Ignition switch power is needed for ignition switch functions.
The Body Control Module provides the following features:
Interior Lighting
- Inside Mirror/Reading Lamps
- Ignition Key Halo Lamp
- Illuminated Entry
Battery Protection (load shedding)
Windshield Wipers/Washers
- Intermittent Wipe
- Speed Sensitive Wipe
- Wipe after wash
Instrument Cluster Support
- Gauge positioning and CCD Lamp Drive
- Instrument Cluster Dimming
Vehicle Theft Security System (VTSS)
Door Locks
- Power
- Auto Door Locks
- Remote Keyless Entry (RKE)
- Door Lock Inhibit
Exterior Lamp Control
- Controls Parklamps, Low & High Beam
- Headlamps
- Headlamp Time Delay
Remote Radio Controls
Auto Volume Radio Control
Chime
Climate Control Support
Low Tire Pressure Warning interface for operation of LTPW Lamp
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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