Retrieving DTCS
NOTE:
Self-diagnostic tests are written specifically for Chrysler's Diagnostic Readout Box (DRB) scan tool. If using a generic scan tool, ensure scan tool is OBD-II certified. A generic scan tool may not be capable of performing all necessary test functions.
NOTE:
If MIL does not come on for 3 seconds and then go off, bulb may be defective, or problem may exist on circuit (CCD Bus) between PCM and instrument cluster. If problem exists with CCD Bus, this problem may be displayed when using scan tool to retrieve DTCs.
- Ensure battery is fully charged. Turn ignition on and note operation of MIL. When ignition is first turned on, MIL should come on and remain on for 3 seconds to verify bulb operation, and then go off.
- Attempt to start engine. Turn ignition off. Connect scan tool to Data Link Connector (DLC). DLC is located below instrument panel near steering column. See Fig 1.
- Turn ignition on. Using scan tool manufacturer's instructions, record all DTCs displayed on scan tool. Once all repairs are made, ensure DTCs are cleared from PCM memory. See CLEARING DTCS .
- If scan tool displays NO RESPONSE, go to TEST NS-6A. If scan tool will not power up, check for loose cable connections or bad cable. If cable connections and cable are okay, check voltage at DLC power terminal. See appropriate wiring diagram in WIRING DIAGRAMS article. Voltage should be at least 11 volts. If voltage is not as specified, check wiring circuit and necessary fuses.
- If scan tool displays an error message, RAM TEST FAILURE, CARTRIDGE ERROR, KEY PAD TEST FAILURE, or LOW OR HIGH BATTERY, this indicates a scan tool failure. To diagnose and correct these conditions, see appropriate VEHICLE COMMUNICATIONS article in ACCESSORIES & EQUIPMENT.
- If DTCs are displayed, see DTC MESSAGES & CODES table and perform appropriate test(s). If no DTCs are displayed, refer to one of the following:
- For driveability problems, perform TEST NTC-1A .
- For no-start problems, perform TEST NS-SEL .
- For speed control problems, refer to appropriate CRUISE CONTROL SYSTEMS article in ACCESSORIES & EQUIPMENT.
- For charging system problems, refer to appropriate GENERATORS & REGULATORS article in STARTING & CHARGING SYSTEMS.