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Home >> Lincoln >> 2012 >> MKZ Hybrid >> Repair and Diagnosis (Single Page) >> Body & Frame >> 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

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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