Automatic Dimming Inside Mirror Input Test

Automatic Dimming Inside Mirror Input Test

1. Turn the ignition switch to ON (II).






2. Measure the voltage between terminal No. 2 and body ground.

- If there is less than 0.2 V, go to step 3.
- If there is more than 0.2 V, check for:
- An open or high resistance in the wire.
- Poor ground (G501) or an open in the ground wire.

3. Measure the voltage between terminal No. 1 and body ground.

- If there is battery voltage, go to step 4.
- If there is no voltage, check for:
- Blown No. 36 (10 A) fuse in the under-dash fuse/relay box.
- An open or high resistance in the wire.

4. Measure the voltage between terminal No. 3 and body ground with the transmission range switch in R position.

- If there is battery voltage, replace the mirror assembly Rearview Mirror Replacement.
- If there is no voltage, check for:
- An open or high resistance in the wire.
- Faulty under-dash fuse/relay box (MICU).
- Faulty transmission range switch.