Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Interior Lights Dimming Schematics | |||
1 | Did you perform the Lighting Systems Diagnostic System Check? | Go to Step 2 | |
2 | Verify that the interior backlighting does not dim. Does the interior backlighting operate normally? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 | Are the instrument cluster backlighting lamps the only lamps that do not dim? | Go to Step 8 | Go to Step 4 |
4 | Remove the ILLUM fuse in the IP fuse block. Do the affected lamps remain on? | Go to Step 6 | Go to Step 5 |
5 | Reinstall the fuse and remove the IP dimmer switch. Do the affected lamps remain on? | Go to Step 7 | Go to Step 9 |
6 | Repair the short to voltage in the instrument panel lamp fuse supply voltage 2 circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 10 | -- |
7 | Repair the short to voltage in the instrument panel lamps dimmer switch signal circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 10 | -- |
8 | Replace the instrument cluster. Refer to Instrument Cluster Replacement in Instrument Panel, Gauges, and Console. Did you complete the repair? | Go to Step 10 | -- |
9 | Replace the IP dimmer switch. Refer to Instrument Panel Lamp Dimmer Switch Replacement . Did you complete the repair? | Go to Step 10 | -- |
10 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 |
