Retrieving & Clearing Diagnostic Trouble Codes
NOTE:
Self-diagnostic tests are written specifically for Chrysler's Diagnostic Readout Box (DRB) scan tool. A generic scan tool can be used, but may not be capable of performing all necessary test functions.
NOTE:
Before proceeding with diagnosis, certain precautions must be followed. See SERVICE PRECAUTIONS
.
- Connect scan tool to Data Link Connector (DLC). DLC is a 16-pin connector located on left side of steering column, above brake pedal. See Figure . Turn ignition on. If scan tool display is not blank, go to next step. If scan tool display is blank, go to SCAN TOOL BLANK SCREEN in COMMUNICATIONS under SYSTEM TESTS.
- Using scan tool, select BODY SYSTEM, then BODY COMPUTER. Scan tool will perform a CCD bus test. If scan tool displays BUS OPERATIONAL, go to next step. If scan tool displays NO RESPONSE, go to appropriate test in COMMUNICATIONS under SYSTEM TESTS. If scan tool displays any other message, go to appropriate test in COMMUNICATIONS under SYSTEM TESTS.
- Using scan tool, select READ DTCs. If any fault messages are displayed, go to DIAGNOSTIC TROUBLE CODE IDENTIFICATION table to identify which system is affected. If no fault messages are displayed, go to SYMPTOM IDENTIFICATION table for list of identified systems. Fault messages or symptoms are diagnosed using a scan tool and/or DVOM. These problems may occur separately or in various combinations. When diagnosing a system with many apparent problems, a sequence of tests may be required. After repairs, ensure problem(s) or failure(s) have been corrected by performing appropriate verification test.
DIAGNOSTIC TROUBLE CODE IDENTIFICATION
| Affected System (1) | Scan Tool Display | ||||
|---|---|---|---|---|---|
| Air Bag | (2) | ||||
| Communications | BUS (+) & BUS (-) Shorted Together | ||||
| BUS Bias Level Too Low Or Too High | |||||
| BUS (+) &/Or BUS (-) Open | |||||
| Bus Short To Battery | |||||
| Bus Short To 5 Volts | |||||
| BUS Short To Ground | |||||
| No BUS Bias | |||||
| No Termination | |||||
| Vehicle Theft Security System | Antenna Failure | ||||
| COP Failure | |||||
| EEPROM Failure | |||||
| Internal Faults | |||||
| RAM Failure | |||||
| Serial Link Internal | |||||
| Stack Overflow Failure | |||||
| PCM Status Failure | |||||
| Rolling Code Failure | |||||
| Serial Link External Failure | |||||
| Transponder CRC Failure | |||||
| Transponder Communication Failure | |||||
| Transponder ID Mismatch | |||||
| Transponder Response Mismatch | |||||
| VIN Mismatch | |||||
|
|||||
SYMPTOM IDENTIFICATION