Test H: The Driver Power Seat Does Not Move Horizontally/Vertically/Recline

PINPOINT TEST H: THE DRIVER POWER SEAT DOES NOT MOVE HORIZONTALLY/VERTICALLY/RECLINE

H1-H3:

H4-H5:

H6-H8:

H8-H10:

H10-H11:

H12-H14:

H14-H15:

Normal Operation
The driver seat control switch is powered by battery voltage on circuit SBB32 (VT/RD) and is supplied ground on circuit GD126 (BK/WH). When pressed, the seat control switch supplies that voltage and ground to a power seat track motor or power recline motor to move the seat or backrest. When pressed in the opposite direction, the seat control switch reverses the polarity to that same power seat track motor or power recline motor, which moves the seat or backrest in the opposite direction. There are 3 power seat track motors that combine to move the seat cushion horizontally (FORWARD/REARWARD) and vertically (front UP/DOWN and rear UP/DOWN). There is an additional motor in the power recline mechanism to move the seat backrest forward and rearward. If a new seat track motor needs to be installed, it is necessary to install an entire power seat track. The power recline motor is serviced separately.

Possible Causes
A driver 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 (seat track).
- a faulty power recliner mechanism.