Instrument Cluster and Panel Lighting

1. Verify the customer's concern by operating the instrument illumination to duplicate the condition.
2. Inspect to determine if any of the following electrical concerns apply:

VISUAL INSPECTION CHART

Electrical
- Open fuses:
- Fuse Junction Panel: 4 (15 A), 8 (15 A).
- Circuitry/open shorted.
- Damaged headlamp switch.
- Damaged printed Circuit.
- Damaged bulb(s).

3. If the inspection reveals an obvious concern that is readily serviced, correct the concern before continuing with Inspection and Verification.
4. If the concern remains after inspection, connect the Rotunda New Generation Star (NGS) Tester 007-00500 or equivalent to the Data Link Connector (DLC) located beneath the instrument panel to perform DATA LINK DIAGNOSTICS test. If the NGS responds with NO RESPONSE/NOT EQUIPPED for the lighting control module go to Pinpoint Test A. A: No Communication With Lighting Control Module If the DATA LINK DIAGNOSTICS test is passed for the lighting control module, retrieve continuous DTCs and execute Self Test Diagnostics for the lighting control module to retrieve current DTCs.
5. If self test is passed and no DTCs are retrieved, go to the Symptom Chart Instrument Cluster and Panel Lights to continue diagnostics.
6. If DTCs are retrieved, go to the Lighting Control Module Diagnostic Trouble Code (DTC) Index to continue diagnostics.
7. If the lighting control module cannot be accessed by the NGS, go to Pinpoint Test A. A: No Communication With Lighting Control Module

Rotunda Service Bay Diagnostic System (SBDS (R) 001-00001 may also be used to diagnose this system.