Inspect Light Control Rheostat
WARNING: This page is about a different car, the 2002 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.
- Connect terminal 1 and 2 through a 3.4 watt test bulb..
- Connect the positive (+) lead from the battery to terminal 1 and the negative (-) lead to terminal 3.
- Turn the rheostat knob to fully counterclockwise, check that the test bulb goes out.
- Gradually turn the rheostat knob to clockwise, check that the test bulb brightness changes from dark to bright.
If operation is not as specified, replace the rheostat.