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Light Control Rheostat: Inspection

  1. INSPECT LIGHT CONTROL RHEOSTAT 
    1. Remove the light control rheostat.
    2. Measure the resistance of the rheostat.
      Fig 1: Identifying Light Control Rheostat Connector Terminals
      G04491157Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard resistance 

      TESTER CONNECTION AND SPECIFIED CONDITION REFERENCE

      Tester Connection Rheostat Position Specified Connection
      1 (E) - 3 (RV) Max 8 to 12
      1 (E) - 3 (RV) Mid 4.7 k
      1 (E) - 3 (RV) Min 0 to 50

      If result is not as specified, replace the rheostat.