Automatic Dimming Mirrors Test
6P connector type

1.
Turn the vehicle to the OFF (LOCK) mode.

2.
Disconnect the automatic dimming inside mirror 6P connector.

3.
Check for continuity between terminal No. 3 and body ground.

If there is continuity, go to step 4.
If there no continuity, check for:
?
An open or high resistance in the ground wire.
?
Poor ground (G501).

4.
Turn the vehicle to the ON mode.

5.
Measure the voltage between terminal No. 6 and body ground.

If there is battery voltage, go to step 6.
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 wire.

6.
Measure the voltage between terminal No. 4 and body ground with the shift lever in R position.

If there is battery voltage, replace the rearview mirror.
If there is no voltage, check for:
?
Blown No. B5 (10 A) fuse in the under-dash fuse/relay box.
?
Faulty Transmission range switch
?
An open or high resistance in the wire.

7P connector type

1.
Turn the vehicle to the OFF (LOCK) mode.

2.
Disconnect the automatic dimming inside mirror 7P connector.

3.
Check for continuity between terminal No. 6 and body ground.

If there continuity, go to step 4.
If there no continuity, check for:
?
An open or high resistance in the ground wire.
?
Poor ground (G501).

4.
Turn the vehicle to the ON mode.

5.
Measure the voltage between terminal No. 7 and body ground.

If there is battery voltage, go to step 6.
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 wire.

6.
Measure the voltage between terminal No. 5 and body ground with the shift lever in R position.

If there is battery voltage, replace the rearview mirror.
If there is no voltage, check for:
?
Blown No. B5 (10 A) fuse in the under-dash fuse/relay box.
?
Faulty Transmission range switch
?
An open or high resistance in the wire.