LS 460 V8-4.6L (1UR-FSE) (2007)
2. INSPECT LIGHT CONTROL RHEOSTAT (w/ Headlight Cleaner System)
a. Measure the resistance according to the value(s) in the table.
If the result is not as specified, replace the rheostat.
b. Inspect the switch illumination.
1. Connect the battery positive (+) lead to terminal 8 (ILL+) and the negative (-) lead to terminal 6 (ILL-), then check that the light comes on.
OK: LED comes on.
If the result is not as specified, replace the rheostat.