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Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 2150 (Windows And Glass - Glass, Frames And Mechanisms) >> Diagnosis And Testing >> Glass, Frames and Mechanisms >> Pinpoint Tests >> Pinpoint Test D: A Single Power Window is Inoperative - MKZ, LH Front >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2011 Mercury Milan, 2011 Lincoln MKZ, and 2011 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

Under normal operation, voltage is supplied to the master window control switch from the accessory delay relay. The LH front power window motor has dedicated high current power and ground circuits. When the master window control switch is activated, a low current voltage signal is supplied to the LH front power window motor which causes the window to move upward or downward.

This pinpoint test is intended to diagnose the following: 

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