Troubleshooting Hints - Interior Lights Dimming

1. Check the PARK I/P Fuse, if it is open repair a short to ground in circuit 1340.
2. Check the SWC BACKLIGHT Fuse, if it is open repair a short to ground in circuit 1244.
3. Make sure the park lamps turn on and off normally before proceeding with diagnosis, refer to Exterior Lights for the park lamp diagnosis.
4. Check G113, G200, G201, G302 and G401 for a clean and tight ground.
5. If all interior lamps are inoperative, refer to Interior Lights.
- Check for a broken (or partially broken) wire inside of the insulation which could cause system malfunction but prove good in a continuity/voltage check with a system disconnected. These circuits may be intermittent or resistive when loaded, and if possible, should be checked by monitoring for a voltage drop with the system operational (under load).
- Check for proper installation of aftermarket electronic equipment which may affect the integrity of other systems refer to General Troubleshooting Procedures. Diagnostic Aids
- Refer to System Diagnosis.