Chime Service Diagnosis

Chime Service Diagnosis
Before performing this test, complete the testing of each of the hard wired chime warning system switches. Refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, details of wire harness routing and retention, connector pin-out information and location views for the various wire harness connectors, splices and grounds.

NOTE: The following tests may not prove conclusive in the diagnosis of this system. The most reliable, efficient, and accurate means to diagnose the Chime Service function of the instrument cluster requires the use of a DRBIII scan tool. Refer to the appropriate diagnostic information.

1. Disconnect and isolate the battery negative cable. Remove the instrument cluster from the instrument panel.
2. Disconnect the cross body wire harness connector for the ignition switch from the switch connector receptacle. Check for continuity between the key-in switch sense circuit cavity of the instrument panel wire harness connector (Connector C2) for the instrument cluster and a good ground. There should be no continuity. If OK, go to Step 3. If not OK, repair the shorted key-in switch sense circuit as required.
3. Check for continuity between the key-in switch sense circuit cavities of the instrument panel wire harness connector for the instrument cluster (Connector C2) and the cross body wire harness connector for the ignition switch. There should be continuity If OK, go to Step 4. If not OK, repair the open key-in ignition switch sense circuit between the instrument cluster and the ignition switch as required.
4. Disconnect the floor wire harness connector from the seat belt switch pigtail wire connector. Check for continuity between the seat belt switch sense circuit cavity of the instrument panel wire harness connector (Connector C2) for the instrument cluster and a good ground. There should be no continuity If OK, go to Step 5. If not OK, repair the shorted seat belt switch sense circuit between the instrument cluster and the seat belt switch as required.
5. Check for continuity between the seat belt switch sense circuit cavities of the instrument panel wire harness connector (Connector C2) for the instrument cluster and the floor wire harness connector for the seat belt switch. There should be continuity. If OK, refer to PRELIMINARY DIAGNOSIS . If not OK, repair the open seat belt switch sense circuit between the instrument cluster and the seat belt switch as required.