Ignition Switch Continuity Test
WARNING:
Deactivate air bag system before performing any service operation. See appropriate article in the ACCESSORIES & EQUIPMENT section:
For Land Cruiser, see AIR BAG RESTRAINT SYSTEM .
For Lexus LX450, see AIR BAG RESTRAINT SYSTEM .
- Disconnect negative battery cable. Remove driver side lower instrument panel cover. Remove upper and lower steering column covers if needed. Locate ignition switch wiring harness 10-pin connector. See Fig 1.
- With ignition switch in LOCK position, there should be no continuity between any terminals. With ignition switch in ACC position, there should be continuity between terminals No. 7 and 9. With ignition switch in ON position, there should be continuity between terminals No. 3 and 4, and between terminals No. 6, 7 and 9. With ignition switch in START position, there should be continuity between terminals No. 2, 3 and 4, and between terminals No. 6, 9 and 10. If continuity is not as specified, replace switch.