Ignition Switch: Inspection

WARNING: This page is about a different car, the 2008 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT IGNITION SWITCH

Measure the switch resistance.

Fig 1: Identifying Ignition Switch

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard resistance

RESISTANCE REFERENCE TABLE

Tester Connection	Switch Position	Specified Condition
Between all terminals	LOCK	10 kΩ or higher
2 (AM1) - 3 (ACC)	ACC	Below 1 Ω
2 (AM1) - 3 (ACC)	ON
2 (AM1) - 4 (IG1)
6 (IG2) - 7 (AM2)
1 (ST1) - 2 (AM1)	START
2 (AM1) - 4 (IG1)
6 (IG2) - 7 (AM2)
7 (AM2) - 8 (ST2)

If the result is not as specified, replace the switch assembly.