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Test C: The Power Seat Does Not Move Horizontally/Vertically - Driver, Vehicles Without SIR

PINPOINT TEST C: THE POWER SEAT DOES NOT MOVE HORIZONTALLY/VERTICALLY DRIVER - VEHICLES WITHOUT SIR


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Normal Operation
The seat control switch is powered by battery voltage to seat control switch circuit 566 (DG) and is supplied ground on circuit 57 (BK). The seat control switch supplies switched battery power and ground directly to the seat bidirectional motors. When pressed, the power seat switch supplies that voltage and ground to a power seat track motor to move the seat. When pressed in the opposite direction, the power seat switch reverses the polarity to that same power seat track motor, 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).

Possible Causes
A power seat that does not move horizontally and/or vertically can be caused by:
- wiring, terminals or connectors.
- a faulty seat control switch.
- a faulty seat track motor.