Test E: The Power Seat Does Not Move Horizontally/Vertically
PINPOINT TEST E: THE POWER SEAT DOES NOT MOVE HORIZONTALLY/VERTICALLYE1-E3:
E4-E5:
E6-E8:
E8-E9:
E10-E11:
E12-E13:
E14:
Normal Operation
The seat control switch is powered by battery voltage on circuit 171 (BK/WH) and is grounded by circuit 57 (BK). When pressed in one of the 6 available directions, the seat control switch supplies voltage to the desired seat motor on the desired direction circuit. The seat control switch is normally closed to ground on all 6 of the seat motor circuits, so if one circuit becomes closed to power, the circuit on the opposite side of the same motor is still closed to ground. The seat motor will then operate, moving the seat track in the desired direction. Moving the seat control switch in the opposite direction reverses polarity to the seat motor, which causes the seat motor to move the seat track in the opposite direction. There are 3 seat motors integrated to the seat track assembly: 1 to move the seat horizontally (forward/rearward), 1 for front vertical (up/down) operation and 1 for rear vertical (up/down) operation.
Possible Causes
- Circuit 1469 (RD/LB) open
- Circuit 1470 (YE/LB) open
- Circuit 1471 (RD/WH) open
- Circuit 1472 (YE/WH) open
- Circuit 1473 (YE/LG) open
- Circuit 1474 (RD/LG) open
- Seat control switch
- Seat track motor and transmission assembly