Test B: The Power Seat Is Inoperative - Passenger Seat

PINPOINT TEST B: THE POWER SEAT IS INOPERATIVE - PASSENGER SEAT

B1:

B1-B2:

B3:

Normal Operation
The seat control switch is powered by battery voltage to circuit 490 (RD) and is supplied ground on circuit 57 (BK). The seat control switch applies battery power and ground directly to one of 3 bi-directional seat track motors, respectively, to move the seat. Toggling the seat control switch to the opposite position reverses the voltage polarity applied to the respective seat motor and moves the seat in the opposite direction.

Possible Causes
An inoperative passenger power seat can be caused by:
- fuse.
- circuit 490 (RD) open.
- circuit 57 (BK) open.
- a faulty seat control switch.