Instrument Cluster Illumination Test
- This test assumes that all exterior lighting controlled by headlight switch are functioning properly. If exterior lighting is not functioning properly, correct fault(s) before continuing with this test.
- Check and replace illumination bulbs as necessary and retest. If bulbs are okay, remove and inspect fuse No. 6 (5-amp) in junction block. Junction block is located behind right side kick panel. If fuse is okay, go to next step. If fuse is blown, locate and repair cause of blown fuse and retest.
- Using headlight switch, turn parking lights on. Connect voltmeter between ground and power side of fuse No. 6 fuse holder. Observing voltmeter, rotate headlight switch knob counterclockwise to just before interior lights detent, then rotate knob clockwise. Voltage reading should change from battery voltage to zero volts. If voltage is as specified, go to next step. If voltage is not as specified, locate and repair open circuit between headlight switch and junction block.
- Remove instrument cluster. See REMOVAL & INSTALLATION . Turn headlight switch off. Check for continuity between ground and terminal No. 3 (Orange wire) at instrument cluster 10-pin Black connector. If continuity does not exist, go to next step. If continuity exists, locate and repair short to ground in Orange wire.
- Reinstall fuse No. 6 in junction block. Reconnect negative battery cable. Using headlight switch, turn parking lights on. Rotate headlight switch knob counterclockwise to just before interior lights detent. Measure voltage between ground and terminal No. 3 (Orange wire) at instrument cluster 10-pin Black connector. If battery voltage is not present, locate and repair open circuit. If battery voltage is present, no problem is indicated. Recheck instrument cluster illumination bulb(s) and bulb holders. Repair as necessary.