Sentry Key Immobilizer System (Skim)/Sentry Key Remote Entry System (SKREES)
Conventional diagnostic methods may not prove conclusive in the diagnosis of the Sentry Key Remote Entry Module (SKREEM), sometimes referred to as the Wireless Control Module (WCM), and the Sentry Key Immobilizer System (SKIM), sometimes referred to as the Sentry Key Remote Entry System (SKREES), the ElectroMechanical Instrument Cluster (EMIC), the Powertrain Control Module (PCM), the Controller Area Network (CAN) data bus, or the electronic message inputs used to provide the electronic features of the SKREES. The most reliable, efficient, and accurate means to diagnose the SKREEM, the EMIC, the PCM, the CAN data bus, and the electronic message inputs for the SKREES requires the use of a diagnostic scan tool. Refer to the appropriate diagnostic information.
| CONDITION | POSSIBLE CAUSES | CORRECTION |
|---|---|---|
| SECURITY INDICATOR FAILS TO LIGHT DURING BULB TEST | 1. Light-Emitting Diode (LED) faulty. | 1. Perform the instrument cluster actuator test. Refer to DIAGNOSIS AND TESTING . |
| 2. Fuse faulty. | 2. Check the SKREEM fused B(+) fuse and the fused ignition switch output (run-start) fuse in the Junction Block (JB). Replace fuses, if required. | |
| - | 3. Ground path faulty. | 3. Check for continuity to ground at the connector for the SKREEM. Repair wiring, if required. |
| - | 4. Battery feed faulty. | 4. Check for battery voltage at the connector for the SKREEM. Repair wiring, if required. |
| - | 5. Ignition feed faulty. | 5. Check for battery voltage at the connector for the SKREEM with the ignition switch in the On position. Repair wiring, if required. |
| SECURITY INDICATOR FLASHES FOLLOWING BULB TEST | 1. Invalid key in ignition switch lock cylinder. | 1. Replace the key with a known valid key. |
| 2. Key-related fault. | 2. Use a diagnostic scan tool and the appropriate diagnostic information for further diagnosis. | |
| SECURITY INDICATOR LIGHTS SOLID FOLLOWING BULB TEST | 1. SKREES system malfunction/fault detected. | 1. Use a diagnostic scan tool and the appropriate diagnostic information for further diagnosis. |
| 2. SKREES system inoperative. | 2. Use a diagnostic scan tool and the appropriate diagnostic information for further diagnosis. |