Body Control Computer - Introduction: Description
The body control computer system consists of a combination of modules that either communicate over the Chrysler Collision Detection (CCD) bus system or Programmable Communication Interface (PCI) bus system. Through the CCD (Cherokee and Wrangler) or PCI (Grand Cherokee) 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 articles are as follows:
- Chime System (WJ Body)
- Compass/Mini-Trip Computer (CMTC) (XJ and WJ Bodies)
- Exterior Lighting (WJ Body)
- Instrument Cluster (All)
- Interior Lighting (WJ Body)
- Power Door Locks (XJ and WJ Body)
- Power Windows (WJ Body)
- Sentry Key Immobilizer System (SKIS) (All)
- Vehicle Theft Security System (VTSS) (All)
- Wipers (WJ Body)
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. See Fig 1 .