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

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

H1-H4:

H4-H6:

H6-H8:

H8-H10:

H11-H13:

H13-H14:

Normal Operation
Under normal operation, the auto-dimming mirror receives power from circuit A CBP02 (GN) and ground from circuit GD139 (BK/YE). If the vehicle is placed in REVERSE, voltage is sent to circuit CBP12 (GN/WH) and the auto-dimming mirror will turn the dimming feature OFF.

When the dimming is activated, voltage is sent from the interior mirror to the LH exterior mirror though circuit LRD12 (BU/GY). Ground for the LH exterior mirror is provided by the interior mirror through circuit RRD12 (BN).

Possible Causes
- Open in circuit A_CBP02 (GN), GD139 (BK/YE), CBP12 (GN/WH), LRD12 (BU/GY) or RRD12 (BN)
- Short to ground in circuit LRD12 (BU/GY)
- Inoperative auto-dimming mirror