Pinpoint Test R : The Power Lumbar Is Inoperative -- Driver, Without Multi-Contour Seats: Notes

Refer to Power Seats, Power Seats for schematic and connector information.

Refer to Memory Seats, Memory Seats for schematic and connector information.

Normal Operation 

The seat control switch is supplied voltage and ground. When the lumbar button (part of seat control switch) is pressed, voltage and ground are supplied to the power lumbar motor to move the lumbar mechanism in or out.

This pinpoint test is intended to diagnose the following: 

• Wiring, terminals or connectors
• Seat control switch
• Lumbar motor