Automatic Dimming Inside Mirror Test

Automatic Dimming Inside Mirror Test

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

2. Measure the voltage between terminal No. 6 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:
- Poor ground (G501).
- An open or high resistance in the ground wire.





3. Measure the voltage between terminal No. 7 and body ground.

* If there is battery voltage, go to step 4.
* If there is no voltage, check for:
- Blown No. B6 (7.5 A) fuse in the under-dash fuse/relay box.
- An open or high resistance in the ground wire.

4. Measure the voltage between terminal No. 5 and body ground with the transmission range switch in R position.

* If there is battery voltage, replace the mirror assembly Rearview Mirror Removal and Installation.
* If there is no voltage, check for:
- Blown No. B5 (10 A) fuse in the under-dash fuse/relay box.
- Faulty MICU.
- Faulty transmission range switch.
- An open or high resistance in the wire.