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Home >> Mercury >> 2008 >> Milan Base, 3.0 1, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1554 (Parking Aid System) >> Diagnosis And Testing >> Parking Aid - Video >> Pinpoint Tests >> Pinpoint Test L: The Rear Video Mirror Display Is Always On (Vehicles Without Navigation) >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2010 Mercury Milan, 2010 Lincoln MKZ, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

The video camera receives a supply voltage, with the ignition switch in the RUN position. When the gear selector is in the REVERSE (R) position, a reverse voltage signal is sent to the auto-dimming interior mirror supplying power to the display in the mirror. The video camera signal is sent to the auto-dimming interior mirror. The video signal from the video camera displays an image on the LH side of the auto-dimming interior mirror.

This pinpoint test is intended to diagnose the following: 

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