Dimmer Switch: Testing and Inspection
LIGHT CONTROL RHEOSTATON-VEHICLE INSPECTION
1. INSPECT LIGHT CONTROL RHEOSTAT
a. Turn the rheostat knob OFF, and check that there is no continuity between terminals 5 and 4 (rheostat knob turned fully counterclockwise).
b. Gradually turn rheostat knob from the dark side to bright side, and check that there is continuity between terminals 5 and 4 (rheostat knob turned clockwise).
If operation is not as specified, replace the rheostat.