Switch Lights of Remote Touch do not Illuminate: Procedure

1. Perform the following settings and check the switch illumination again.
   Fig 1: Switch Illumination

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   1. When the vehicle is in a bright area, move to a dark area.

      HINT: 

      When the vehicle is in a bright area, the switch illumination may not turn on due to the automatic dimmer function.

   2. Set the rheostat to the maximum brightness.

      HINT: 

      If the brightness of the rheostat is set to low, switch illumination may not be recognized even when the switch illumination turns on.

   3. If the light control switch is in the AUTO position, turn the switch to the tail or head position.

      HINT: 

      If the light control switch is in the AUTO position, the switch illumination will not turn on unless the surrounding area is dark.

      OK

      Switch illumination turns on.

      TEXT IN ILLUSTRATION
      
      

      *1	Switch Illumination

NG → See step   2 

OK → END 

1. Activate self check mode. Refer to OPERATION CHECK .
2. Check switch illumination.
   Fig 2: Switch Illumination & Switch Knob

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Move the remote touch switch knob from the lower left to the upper right to check that the brightness of the switch illumination changes.

      OK

      The switch illumination brightness changes according to the remote touch switch knob operation.

      TEXT IN ILLUSTRATION
      
      

      *1	Switch Illumination
      *2	Switch Knob

NG → See step   6 

OK: Go to next step 

1. Disconnect the remote touch connector.
   Fig 3: Remote Touch Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   G13-6 (ILL+) - Body ground	Light control switch in tail or head	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Remote Touch)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the remote touch connector.
   Fig 4: Remote Touch Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the combination meter assembly connector.
   Fig 5: Combination Meter Assembly Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   G13-4 (ILL-) - F15-15 (ILL-)	Always	Below 1 Ω
   G13-4 (ILL-) - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Remote Touch)
   *2	Front view of wire harness connector (to Combination Meter Assembly)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Replace the remote touch (remote operation board). Refer to DISASSEMBLY .
2. Check if the switch illumination turns on.

   OK

   The switch illumination turns on when the light control switch is in the tail or head position.

NG → See step   7 

OK → END 

1. Replace the integration panel sub-assembly. Refer to REMOVAL .
2. Check if the switch illumination turns on.

   OK

   The switch illumination turns on when the light control switch is in the tail or head position.

NG → See step   8 

OK → END