Seat Heater Switch Circuit
WARNING: This page is about a different car, the 2003 Lexus RX 300 and 2002 Lexus RX 300. However, it is still accessible from the selected car via links, so may be relevant.
Disconnect the switch connector and inspect the connector on the wiring harness side. See CONNECTOR IDENTIFICATION . See INSPECTING SEAT HEATER SWITCH CIRCUIT table. If the circuit is not as specified, inspect the circuits connected to other parts.
INSPECTING SEAT HEATER SWITCH CIRCUIT
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 6 - Ground | Constant | Continuity |
| 4 - Ground | Ignition Switch Position LOCK Or ACC | No Voltage |
| 4 - Ground | Ignition Switch Position ON | B+ Voltage |
| 1 - Ground | Light Control Switch OFF | No Voltage |
| 1 - Ground | Light Control Switch TAIL Or HEAD | B+ Voltage |