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.
Engine Controls - Tests W/Codes - Body Control Computer: Description
The body control computer system consists of a combination of modules that communicate over the Chrysler Collision Detection (CCD) bus system. Through the CCD bus, information related to the operation of vehicle components and circuits is relayed to the appropriate system module(s). Each module receives the same information about a component. This reduces the complexity of vehicle wiring and size of wiring harness.
Body control computer systems covered in this article and BODY CONTROL COMPUTER TESTS are as follows: automatic door locks, chime functions, compass/temperature module, courtesy lights, door ajar system, electronic instrument cluster, Electronic Vehicle Information Center (EVIC), headlight doors, headlight time delay, illuminated entry system, intermittent wipers, (ignition) key-in light system, mechanical instrument cluster (warning lights), message center, Overhead Travel Information System (OTIS), Remote Keyless Entry (RKE) system and travel module.
Using Chrysler's Diagnostic Readout Box (DRB), body fault codes are accessed through CCD bus Data Link Connector (DLC). DLC is located under left side of dash or next to center console. See Fig 1 .
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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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