Retrieving Diagnostic Trouble Codes (DTC)
- Generic Scan Tool -
Refer to scan tool manufacturer's instructions and procedures. Scan tools may not have ability to measure voltage, resistance or continuity. When instructed, use of an additional DVOM may be required.
- DRBIII(R) Scan Tool -
DRBIII(R) scan tool is grounded through Data Link Connector (DLC) connector. Only one volt/ohmmeter test lead is required when instructed by testing to measure voltage or resistance on specified circuit using DRBIII(R). DRBIII(R) scan tool volt/ohmmeter mode should only be used when system tests require use of this option or when prompted by DRBIII(R) scan tool.
NOTE:
Refer to DRBIII(R) scan tool manufacturer's instructions to retrieve and clear fault messages and when performing other DRBIII(R) scan tool functions.
- Connect scan tool to Data Link Connector (DLC) 16-pin connector. See COMPONENT LOCATIONS
. Turn ignition switch to ON position. If scan tool LEDs do not illuminate and no sound emitted, check for poor cable connections. Check for a minimum of 11 volts at DLC connector terminal No. 16, and repair power supply as necessary. If scan tool display remains blank, consult scan tool manufacturer's manual. If scan tool LEDs illuminate and sound is emitted, continue with fault message and code retrieval.
- Using scan tool, select SYSTEM MONITORS, then CCD BUS TEST. Scan tool will perform a CCD bus test. If scan tool displays BUS OPERATIONAL, go to next step. If scan tool displays any message except BUS OPERATIONAL, go to appropriate procedure for message displayed. See SYMPTOM INDEX DIRECTORY
table. If scan tool displays any CCD bus fault message or any NO RESPONSE message, it must diagnosed before proceeding with any other diagnostics.
- Using scan tool, select READ DTCs. If any Diagnostic Trouble Code (DTC) message is present, go to appropriate procedures for DTC message(s) displayed. See DTC MESSAGE INDEX DIRECTORY
table. If no DTC messages are present, identify customer complaint and diagnose by symptoms present. See SYMPTOM INDEX DIRECTORY
table. When diagnosing a system with many apparent problems, a sequence of tests may be required. After repairs, ensure all problems or failures have been corrected. Perform appropriate VERIFICATION TEST.
DTC MESSAGE INDEX DIRECTORY
| System |
DTC Message Present |
| Air Bag Restraint System |
|
| Chime System |
| CHIME INOPERATIVE WITH WARNING LIGHT/GAUGE |
| CHIME INOPERATIVE - EXTERIOR LIGHTS ON & DRIVER DOOR OPEN |
| Communications |
|
| Computer Mini Trip Computer (CMTC) |
|
| Door Ajar System |
|
| Mechanical Instrument Cluster (MIC) |
|
| Power Door Lock & RKE Systems |
| DOOR LOCK SWITCH FAILURE |
| DOOR UNLOCK SWITCH FAILURE |
| Windshield Wiper System |
| WIPER PARK SWITCH FAILURE |
| Vehicle Theft Security System (VTSS) |
|
SYMPTOM INDEX DIRECTORY