RAV4 2WD L4-2.4L (2AZ-FE) (2004)
Dimmer Switch: Testing and Inspection
INSPECT LIGHT CONTROL RHEOSTAT OPERATION
a. Connect the positive (+) lead from the battery to terminal 1 and negative lead (-) to terminal 3.
b. Connect the positive (+) lead from the voltmeter to terminal 2 and negative lead to terminal3.
c. Turn the rheostat knob and check that the voltage changes.
If operation is not as specified, replace the light control rheostat.