On-Vehicle Inspection

INSPECT LIGHT CONTROL RHEOSTAT
1. Turn the rheostat knob OFF, and check that there is no continuity between terminal 5 and 4 (Rheostat knob turned to fully counterclockwise).
2. Gradually turn the rheostat knob from the dark side to bright side, and check that there is continuity between terminal 5 and 4 (Rheostat knob turned clockwise).
  If operation is not as specified, replace the rheostat.
  
  Fig 1: Identifying Light Control Rheostat Terminals
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