Ignition Switch Circuit
WARNING: This page is about a different car, the 2003 Lexus GS 430, 2003 Lexus GS 300, 2002 Lexus GS 430, and 2002 Lexus GS 300. However, it is still accessible from the selected car via links, so may be relevant.
Connect the ignition switch connector and inspect the connector on the wire harness side from the back side. See CONNECTOR IDENTIFICATION . See INSPECTING IGNITION SWITCH CIRCUIT table. If the circuit is not as specified, inspect the circuits connected to the other parts. See WIRING DIAGRAMS .
INSPECTING IGNITION SWITCH CIRCUIT
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 2 - Ground | Constant | B+ Voltage |
| 3 - Ground | Ignition Switch ACC Or ON | B+ Voltage |
| 4 - Ground | Ignition Switch ON | B+ Voltage |
| 6 - Ground | Ignition Switch ON Or START | B+ Voltage |
| 7 - Ground | Constant | B+ Voltage |
| 8 - Ground | Ignition Switch START | B+ Voltage |