DESCRIPTION
| WARNING | Vehicles are equipped with air bag supplemental restraint system. Before attempting ANY repairs involving steering column, instrument panel or related components, see SERVICE PRECAUTIONS and DISABLING & ACTIVATING AIR BAG SYSTEM in AIR BAG RESTRAINT SYSTEMS article. |
Body control computer system consists of a combination of modules that communicate over Chrysler Collision Detection (CCD) bus system. Through CCD bus, information related to operation of vehicle components and circuits are relayed to appropriate system module(s). This reduces complexity of vehicle wiring and size of wiring harness.
Body control computer systems covered are as follows.
- Air Bag System
- Compass/Mini-Trip Computer (CMTC)
- Module Communication
- Instrument Cluster
- Remote Keyless Entry (RKE) System
- Sentry Key Immobilizer System (SKIS)
Body control computer fault messages are accessed through 16-pin Data Link Connector (DLC) using Chrysler Diagnostic Readout Box (DRB) scan tool or generic scan tool. DLC is located on left side of steering column, above brake pedal. (Scheme 1)
Scheme 1
General Information
SECURED ACCESS mode is not required to check programmed status of key.
If Powertrain Control Module (PCM) is replaced, unique secret key data must be transferred from Sentry Key Immobilizer Module (SKIM) to PCM. This procedure requires SKIM to be placed in SECURED ACCESS mode using 4-digit Personal Identification Number (PIN). This number can be obtained from vehicle invoice or calling Chrysler customer center.
If 3 attempts are made to enter secured access mode using an incorrect PIN, SECURED ACCESS mode will be locked out for one hour. To exit lock out mode, turn ignition to ON position for one hour, then enter correct PIN. Ensure all accessories are turned off. Monitor battery state and connect battery charger is necessary.
To program sentry keys using customer programming method, 2 valid sentry keys are required. See PROGRAMMING BLACK SENTRY KEYS USING CUSTOMER LEARN METHOD under SENTRY KEYS.