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Normal Operation

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

The seat control switch is powered by battery voltage on circuit SBP12 (GN/RD) and is supplied ground on circuit GD133 (BK). When the lumbar knob on the seat control switch is pressed, voltage and ground are supplied to the power lumbar motor. When pressing the lumbar knob in the opposite direction, the seat control switch reverses the polarity to the power lumbar motor, which moves the lumbar mechanism in the opposite direction.

This pinpoint test is intended to diagnose the following: 

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