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Home >> Lincoln >> 2007 >> MKX AWD V6-3.5L >> Repair and Diagnosis >> Body and Frame >> Mirrors >> Testing and Inspection >> Pinpoint Tests >> Test H: The Auto-Dimming Mirror Does Not Operate Correctly
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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 interior mirror receives power from circuit CBP31 (BN/OG) and ground from circuit GD133 (BK). If the vehicle is placed in REVERSE, voltage is sent to circuit CE510 (GN/BN) 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 circuits CBP31 (BN/OG), GD133 (BK), CL510 (GN/BN), LRD12 (BU/GY) or RRD12(BN)
- Short to ground in circuit LRD12 (BU/GY)
- Inoperative auto-dimming mirror
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