Chime Warning System
The hard wired chime warning system inputs to the ElectroMechanical Instrument Cluster (EMIC), as well as other hard wired circuits for this system may be diagnosed and tested using conventional diagnostic tools and procedures. 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.
However, conventional diagnostic methods may not prove conclusive in the diagnosis of the EMIC, the Controller Area Network (CAN) data bus, or the electronic message inputs used by the EMIC to provide chime warning system service. The most reliable, efficient and accurate means to diagnose the EMIC, the CAN data bus, and the electronic message inputs for the chime warning system requires the use of a diagnostic scan tool. Refer to the appropriate diagnostic information.
| CHIME WARNING SYSTEM DIAGNOSIS | ||
|---|---|---|
| CONDITION | POSSIBLE CAUSES | CORRECTION |
| NO KEY-IN IGNITION WARNING CHIME, BUT OTHER CHIME FEATURES OKAY | 1. Driver door ajar switch sense circuit open. | 1. Check for continuity between the driver door ajar switch sense circuit connector and the instrument cluster connector. Repair the open driver door ajar switch sense circuit, if required. |
| 2. Key-in ignition switch sense circuit open. | 2. Check for continuity between the key-in ignition switch sense circuit connector and instrument cluster connector. Repair the open key-in ignition switch sense circuit, if required. | |
| 3. Key-in ignition switch ground circuit open. | 3. Check for continuity between the ground circuit cavity of the ignition switch connector and a good ground. Repair the open ground circuit, if required. | |
| 4. Ineffective ignition switch. | 4. Check for continuity between the ground circuit terminal and the key-in ignition switch sense circuit terminal in the ignition switch connector. There should be continuity with a key in the ignition lock cylinder. Replace the ineffective ignition switch, if required. | |
| NO EXTERIOR LAMPS-ON WARNING CHIME, BUT OTHER CHIME FEATURES OKAY | 1. Driver door ajar switch sense circuit open. | 1. Check for continuity between the driver door ajar switch sense circuit connector and the instrument cluster connector. Repair the open driver door ajar switch sense circuit, if required. |
| 2. Headlamp switch signal circuit open. | 2. Check for continuity between the headlamp switch output circuit connector and the instrument cluster connector. Repair the open headlamp switch signal circuit, if required. | |
| NO CHIMES AND OTHER INSTRUMENT CLUSTER FEATURES ERRATIC OR DISABLED | 1. Instrument cluster ground circuit(s) open. | 1. Check for continuity between the ground circuits of the instrument cluster connector and a good ground. Repair the open ground circuit(s), if required. |
| 2. Instrument cluster fused B(+) circuit(s) open. | 2. Check for battery voltage at the B(+) circuits of the instrument cluster connector. Repair the open fused B(+) circuit(s), if required. | |
| 3. Instrument cluster fused ignition switch output (run-start) circuit open. | 3. With the ignition switch in the On position, check for battery voltage at the fused ignition switch output (run-start) circuit of the instrument cluster connector. Repair the open fused ignition switch output (run-start) circuit, if required. | |
| 4. Ineffective instrument cluster. | 4. Replace the ineffective instrument cluster, if required. | |
| NO CHIMES, BUT ALL OTHER INSTRUMENT CLUSTER FEATURES OKAY | 1. Ineffective instrument cluster. | 1. Replace the ineffective instrument cluster, if required. |