Test P: The Power Lumbar Is Inoperative - Passenger

PINPOINT TEST P: THE POWER LUMBAR IS INOPERATIVE - PASSENGER

Normal Operation
The passenger seat control switch is powered by battery voltage on circuit SBB29 (GY/RD) and is supplied ground on circuit GD138 (BK/WH). When the lumbar knob on the seat control switch is pressed, voltage and ground are supplied to the power lumbar motor. When pressing the switch in the opposite direction, voltage polarity to the power lumbar motor is reversed, moving the lumbar assembly in the opposite direction.

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Lumbar control switch
- Power lumbar motor assembly

P1:

P2-P4:

P4-P5: