Diagnostic Procedure

PANEL DIMMER OPEN - DIAGNOSTIC PROCEDURE

TEST	ACTION	APPLICABILITY
1	Turn the ignition on. With the DRBIII®, erase DTCs. Cycle the ignition. With the DRBIII®, read DTCs. Does the DRBIII® display Panel Dimmer Open? Yes : Go To 2 No : The conditon is not present at this time. Monitor DRBIII® parameters while wiggling the related wire harness. Refer to any Technical Service Bulletins (TSB) that may apply. Visually inspect the related wiring harness and connector terminals. Perform BODY VERIFICATION TEST .	All
2	Turn the ignition off. Disconnect the Instrument Cluster C2 harness connector. Disconnect the Multi-Function Switch harness connector. Check connectors - Clean/repair as necessary. Measure the resistance of the Panel Lamp Dimmer Signal circuit. Is the resistance below 5.0 ohms? Yes : Go To 3 No : Repair the Panel Lamp Dimmer Signal circuit for an open. Perform BODY VERIFICATION TEST .	All
3	Turn the ignition off. Disconnect the Multi-Function Switch harness connector. Check connectors - Clean/repair as necessary. Measure the resistance of the Multi-Function Switch between terminal pin 7 and terminal pin 8. Does the resistance measure above 9250 ohms? Yes : Replace the Multi-Function Switch in accordance with the Service Information. Perform BODY VERIFICATION TEST . No : Go To 4	All
4	Turn the ignition off. Disconnect the Multi-Function Switch harness connector. Check connectors - Clean/repair as necessary. Measure the resistance between ground and the Multi-Function Switch Ground circuit. Is the resistance below 5.0 ohms? Yes : Replace and configure the Instrument Cluster in accordance with the Service Information. Perform BODY VERIFICATION TEST . No : Repair the Multi-Function Switch Ground circuit for an open. Perform BODY VERIFICATION TEST .	All