Switch Lights of Remote Touch Always Illuminate or cannot be Controlled Using Rheostat (To 8/2009): Procedure

1. Perform the following and check that the illumination controlled by the rheostat switch illuminates properly.
   1. If the vehicle is in a bright area, move it to a dark area.

      HINT: 

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

   2. 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.

      Result

      Result	Proceed to
      Any of the illumination controlled by the rheostat switch does not illuminate properly.	A
      All of the illumination controlled by the rheostat switch illuminates properly.	B

      HINT: 

      The shift lever indicator illumination and panel switch illumination are controlled by the rheostat switch. If either of these has a malfunction such as an open circuit, the switch illumination of the remote touch is affected and cannot be controlled by the rheostat switch.

B → See step   3 

A: Go to next step 

1. Repair or replace the part with the malfunctioning illumination that is controlled by the rheostat switch.

NEXT: Go to next step 

1. Perform the following settings, operate the rheostat again, and check if illumination brightness adjustment is possible (including adjustment of other devices such as the radio receiver assembly).
   Fig 1: Identifying Switch Illumination

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Check if the remote touch is in self check mode. If it is, cancel self check mode. Refer to OPERATION CHECK .

      HINT: 

      When the remote touch is in self check mode, the switch illumination on the remote touch may remain on.

   2. If the vehicle is in a bright area, move it to a dark area.

      HINT: 

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

   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.

      Result

      Result	Proceed to
      Switch illumination cannot be adjusted (illumination for other devices can be adjusted).	A
      Switch illumination cannot be adjusted (illumination for other devices also cannot be adjusted).	B
      Switch illumination can be adjusted.	C

      TEXT IN ILLUSTRATION
      
      

      *1	Switch Illumination

C → END 

B → See step   7 

A: Go to next step 

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

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

      TEXT IN ILLUSTRATION
      
      

      *1	Switch Illumination
      *2	Switch Knob

NG → See step   8 

OK: Go to next step 

1. Disconnect the remote touch connector.
   Fig 3: Identifying G13 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: Identifying G13 Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the combination meter assembly connector.
   Fig 5: Identifying F15 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 → See step   8