Normal Operation

WARNING: This page is about a different car, the 2007 Lincoln Mark LT and 2007 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.

The driver power seat switch is powered by battery voltage on circuit 956 (OG/LG) and is supplied ground on circuit 875 (BK/LB). When pressed, the power seat switch supplies the voltage and ground to the driver seat module (DSM). The DSM then supplies voltage and ground to the appropriate power seat track motor based on the inputs received from the seat control switch. When pressed in the opposite direction, the power seat switch reverses the polarity to the DSM, which moves the seat in the opposite direction. There are 3 power seat track motors that combine to move the seat horizontally (forward/reverse) and vertically (front up/down and rear up/down).

The following pinpoint test diagnoses a memory seat that does not operate in one or more directions when using the power seat switch. If the memory seat moves in all directions using the power seat switch, go to Pinpoint Test G .