Test D: The Auto-Dimming Mirror Does Not Operate Correctly

PINPOINT TEST D: THE AUTO-DIMMING MIRROR DOES NOT OPERATE CORRECTLY

Normal Operation
The interior auto-dimming mirror can be equipped with or without a microphone. An interior auto-dimming mirror, equipped without microphone, receives power from circuit CBP18 (GY/OG) and ground from circuit GD133 (BK). An interior auto-dimming mirror, equipped with a microphone, receives power from circuit CBP05 (YE) and ground from circuit GD143 (BK/VT). Both interior auto-dimming mirrors will disable the auto-dimming feature when the selector lever is placed in REVERSE and voltage is sent to the interior auto-dimming mirror through circuit CBP15 (BN/BU). There are 2 photoelectric sensors: a forward facing sensor and a rearward facing sensor that detect forward and rearward light conditions. If the sensors are blocked, the interior auto-dimming feature might not work correctly. Always verify both sensors are not physically blocked before attempting to diagnose interior auto-dimming mirror concerns.

This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- Interior auto-dimming mirror

D1-D3:

D4-D5:

D6-D8:

D8-D10:

D11-D13: