Ignition Switch Circuit
WARNING: This page is about a different car, the 2003 Lexus IS 300 and 2002 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.
With ignition switch wiring harness connected, backprobe connector at specified terminals. See Figure. See INSPECTING IGNITION SWITCH CIRCUIT table. If test results are not as specified, inspect and repair related circuit wiring. 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 |