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 Computer - Introduction: Description
The body control computer system consists of a combination of modules that communicate over the Chrysler Collision Detection (CCD) bus system on all models except Concorde and Intrepid. Concorde and Intrepid communicate over the Programmable Communication Interface (PCI) bus system. Through the CCD or PCI bus, information related to the operation of vehicle components and circuits are relayed to the appropriate system module(s). This reduces the complexity of vehicle wiring and size of wiring harness.
Body control computer systems covered in BODY CONTROL COMPUTER TESTS article are as follows:
- Chime system
- Compass/Mini-Trip Computer (CMTC)
- Door ajar system
- Exterior lighting
- Instrument cluster
- Interior lighting
- Intermittent wipers
- Mechanical Instrument Cluster (MIC)
- Memory Heated Seat/Mirror System (MHSMS)
- Power door locks
- Power windows
- Remote keyless entry
- Sentry Key Immobilizer System (SKIS)
- Vehicle Information System (VIC)
- Vehicle Theft Security System (VTSS).
Body control computer fault messages are accessed through 16-pin Data Link Connector (DLC) using Chrysler's Diagnostic Readout Box (DRB) scan tool or generic scan tool. DLC is located on left side of steering column, above brake pedal.
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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.