Test K: The Power Seat Does Not Move Vertically - Passenger Seat, Rear Height
PINPOINT TEST K: THE POWER SEAT DOES NOT MOVE VERTICALLY - PASSENGER SEAT, REAR HEIGHTK1:
K2-K3:
K4:
Normal Operation
The seat control switch is powered by battery voltage to circuit 490 (RD) and is supplied ground on circuit 57 (BK). When either the REAR UP or REAR DOWN position is selected on the seat control switch, power and ground is applied to circuits 982 (YE/LG) and 983 (RD/LG) powering the rear height motor assembly to move the seat UP or DOWN. When the opposite switch position is selected, the seat control switch reverses the voltage polarity to the rear height motor to move the seat in the opposite direction.
Possible Causes
A passenger power seat rear height motor that does not move the seat vertically can be caused by:
- circuit 982 (YE/LG) open or short to ground.
- circuit 983 (RD/LG) open or short to ground.
- a faulty seat control switch.
- a faulty seat track.