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Inspection [02/2024 - ]: Procedure

  1. INSPECT LIGHT CONTROL RHEOSTAT 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1222469Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Light Control Rheostat)

      Standard Resistance

      Tester Connection Condition Specified Condition
      E74-4 (RV) - E74-2 (E) Light control rheostat knob fully downwards (MIN.) Below 50 Ω
      E74-4 (RV) - E74-2 (E) Light control rheostat knob between MIN. and MAX. The value changes gradually (Between 0 to 12 kΩ)
      E74-4 (RV) - E74-2 (E) Light control rheostat knob fully upwards (MAX.) 8 to 12 kΩ
      E74-3 (TC) - E74-2 (E) Light control rheostat knob not fully upward 8 to 12 kΩ
      E74-3 (TC) - E74-2 (E) Light control rheostat knob fully upwards (Tail cancel switch is on) 1 MΩ or higher

      If the result is not as specified, replace the light control rheostat.

    2. Illumination Inspection
      1. Apply auxiliary battery voltage to the light control rheostat switch and check that it illuminates.
        GTY1222476Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Component without harness connected
        (Light Control Rheostat)

        OK

        Condition Specified Condition
        Auxiliary battery positive (+) - E74-6 (ILL+)
        Auxiliary battery negative (-) - E74-1 (ILL-)        		 Illuminates

        If the result is not as specified, replace the light control rheostat.

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