Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Interior Lights Dimming Schematics Connector End View Reference: Lighting Systems Connector End Views or Instrument Panel, Gages, and Console Connector End Views in Instrument Panel, Gages, and Console | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
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 panel cluster (IPC) backlighting lamps the only lamps that do not dim? | Go to Step 8 | Go to Step 4 |
4 | Remove the ILLUM fuse in the instrument panel (I/P) fuse block. Do the affected lamps remain ON? | Go to Step 6 | Go to Step 5 |
5 | Reinstall the fuse and remove the headlamp switch. Do the affected lamps remain ON? | Go to Step 7 | Go to Step 9 |
6 | Repair the short to voltage in the I/P lamp fuse supply voltage circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 10 | -- |
7 | Repair the short to ignition voltage in the I/P lamps dimmer switch signal circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 10 | -- |
8 | Replace the IPC. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the repair? | Go to Step 10 | -- |
9 | Replace the headlamp switch. Refer to Headlamp 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 |
