Test L: The Power Lumbar Is Inoperative - Passenger

PINPOINT TEST L: THE POWER LUMBAR IS INOPERATIVE - PASSENGER

L1:

L1-L3:

L3-L4:

L5:

Normal Operation
The passenger lumbar control switch is powered by battery voltage on circuit 566 (DG) and is supplied ground on circuit 57 (BK). When the passenger lumbar control switch is pressed, voltage and ground are supplied to the power lumbar motor. When pressing the passenger lumbar control switch in the opposite direction, the passenger lumbar control switch reverses the polarity to the power lumbar motor, which moves the lumbar mechanism in the opposite direction.

Possible Causes
An inoperative passenger power lumbar can be caused by:
- fuse.
- wiring, terminals or connectors.
- a faulty lumbar control switch.
- a faulty power lumbar motor assembly.