Lumbar Support Switch Circuit
Inspect the appropriate lumbar support switch (driver or passenger) circuit. See appropriate POWER SEATS under SYSTEM WIRING DIAGRAMS article in ELECTRICAL. Disconnect the switch connector and connect the seat wiring harness to the floor wiring harness. Inspect the connector on the wiring harness side. See INSPECTING LUMBAR SUPPORT SWITCH CIRCUIT table. See CONNECTOR IDENTIFICATION . If the circuit is not as specified, inspect the circuits connected to other parts.
INSPECTING LUMBAR SUPPORT SWITCH CIRCUIT
| Tester Connection | Condition | Specified Condition | |
|---|---|---|---|
| Driver Seat | |||
| 3 - Ground | Constant | Continuity | |
| 4 - Ground | Constant | B+ Voltage | |
| Passenger Seat | |||
| 2 - Ground | Constant | Continuity | |
| 1 - Ground | Constant | B+ Voltage | |