Test F: The Auto Dimming Mirror Does Not Operate Correctly

PINPOINT TEST F: THE AUTO DIMMING MIRROR DOES NOT OPERATE CORRECTLY

Normal Operation
The interior auto-dimming mirror receives voltage from the central junction box (CJB) through circuit 964 (DB/LG) and ground through circuit 57 (BK) (without navigation) or circuit 676 (PK/OG) (with navigation). If equipped with a LH exterior auto-dimming mirror and the auto-dimming feature is activated, voltage is sent from the interior mirror to the LH exterior mirror though circuit 46 (VT) and signal return through circuit 47 (LB/WH). When the transmission is in the REVERSE position, the digital transmission range (TR) sensor sends a voltage signal through circuit 140 (BK/PK) to the interior auto-dimming mirror, which turns the auto-dimming feature off. There are 2 photoelectric sensors: one in the front of the interior rear view mirror and one mounted on the glass side of the mirror. If the sensors are blocked, the interior auto-dimming mirror might not work correctly. Always verify both sensors are not physically blocked before attempting to diagnose auto-dimming mirror concerns.

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

F1-F2:

F3-F5:

F5-F7:

F7-F9:

F10:

F11-F13:

F13-F14: