Light Control Rheostat: Inspection

1. INSPECT LIGHT CONTROL RHEOSTAT 
   1. Inspect the light control rheostat.
      1. Measure the resistance according to the value(s) in the table below.
      Fig 1: Light Control Rheostat Operation Diagram

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance 

      RESISTANCE REFERENCE
      
      

      Tester Connection	Switch Condition	Specified Condition
      6 (TC) - 5 (T)	TAIL cancel switch off → on	10 kΩ or higher → Below 1 Ω
      5 (T) - 1 (E)	Always	10 kΩ +/-20%
      7 (TR) - 1 (E)	Light control rheostat fully turned right → fully turned left	10 kΩ +/-20% → Below 100 Ω

   2. Inspect the ODO/TRIP switch.
      1. Measure the resistance according to the value(s) in the table below.

         Standard Resistance 

      RESISTANCE REFERENCE
      
      

      Tester Connection	Switch Condition	Specified Condition
      4 (A/B) - 1 (E)	ODO/TRIP switch on (Pushed)	Below 100 Ω
      	ODO/TRIP switch off (Not pushed)	1 MΩ or higher

   3. Apply battery voltage to the connector and check the LED illumination condition.

      OK 

   VOLTAGE SPECIFICATION
   
   

   Measurement Condition	Specified Condition
   Battery positive (+) → Terminal 2 (ILL+) Battery negative (-) → Terminal 3 (ILL-)	Light illuminates

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