Diagnostic Procedure
REAR BOOSTER FAN REAR CONTROL SWITCH BACK LIGHTING INOPERATIVE - ATC SYMPTOM CHART
| TEST | ACTION | APPLICABILITY |
|---|---|---|
| 1 | Turn the ignition on. With the DRBIII®, read MIC DTCs. Does DRBIII® display any DTCs? Yes --> Refer to the appropriate test for the related symptom(s). Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 2 |
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| 2 | Turn the ignition on. With the DRBIII®, read BCM DTCs. Does DRBIII® display any DTCs? Yes --> Refer to the appropriate test for the related symptom(s). Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 3 |
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| 3 | Turn the ignition off. Rotate the Panel Lamps Dimmer switch to the off position. Disconnect the Rear Booster Fan Rear Control Switch harness connector. Turn the park lamps on. Measure the voltage of the Panel Lamps Driver circuit while rotating the Panel Lamps Dimmer switch from the off position to the full brightness position. Does the voltage change from approximately 4.5 volts to 11.5 volts? Yes --> Replace the Rear Booster Fan Rear Control Switch in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 4 |
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| 4 | Turn the ignition off. Disconnect the Rear Booster Fan Rear Control Switch harness connector. Disconnect the Instrument Cluster C1 harness connector. Measure the resistance of the Panel Lamps Driver circuit between the Rear Booster Fan Rear Control Switch harness connector and the Instrument Cluster C1 harness connector. Is the resistance below 5.0 ohms? Yes --> Replace the Instrument Cluster (EMIC) in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 . No --> Repair the Panel Lamps Driver circuit for an open. Perform BODY VERIFICATION TEST - VER 1 . |
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