Automatic Day/Night Mirror
- Turn ignition switch on with transmission in Park. Press AUTO button to activate dimming feature. See Figure . Cover forward facing sensor with a dark cloth to exclude any ambient light.
- Shine a light into rear facing sensor. Observe whether or not mirror darkens. With mirror darkened, place transmission in Reverse. Mirror should return to normal. If mirror does not operate as specified, go to next step. If mirror operates as specified, system is operating correctly. Test is complete.
- Check for battery voltage between ground and mirror connector terminal No. 1 (Dark Blue/White wire) with ignition switch on. See Figure . If battery voltage exists, go to next step. If battery voltage does not exist, repair open in Dark Blue/White wire between mirror connector and junction block. See WIRING DIAGRAMS .
- Check for continuity between ground and mirror connector terminal No. 2 (Black/Light Green wire). If continuity exists, go to next step. If continuity does not exist, repair Black/Light Green wire as necessary between mirror connector and junction block.
- Check for battery voltage between ground and mirror connector terminal No. 3 (Violet/Black wire) with transmission in Reverse. If battery voltage exists, replace mirror. See AUTOMATIC DAY/NIGHT INSIDE REARVIEW MIRROR under REMOVAL & INSTALLATION. If battery voltage does not exist, repair open in Violet/Black wire between mirror connector and junction block.