NAVIGATION SYSTEM Switch Lights of Remote Touch Always Illuminate or cannot be Controlled Using Rheostat

DESCRIPTION

Power is supplied to the remote touch (remote operation controller assembly) switch illumination when the light control switch is in the tail or head position.

Tech Tips


  • When the remote touch (remote operation controller assembly) is in self-diagnostic mode, its switch illumination may remain on.

  • If any illumination controlled by the rheostat switch has a malfunction such as an open circuit, the remote touch (remote operation controller assembly) switch illumination is affected and cannot be controlled by the rheostat switch.

WIRING DIAGRAM

A01VT8JE02

CAUTION / NOTICE / HINT

Note

Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE


  1. CHECK ILLUMINATION CONTROLLED BY RHEOSTAT SWITCH


    1. Perform the following procedure 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.

        Tech Tips

        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 it to the tail or head position.

        Tech Tips

        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

        Tech Tips

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


    B

    CHECK SYMPTOMS Click here

    A

  2. REPAIR OR REPLACE ILLUMINATION CONTROLLED BY RHEOSTAT SWITCH


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

      Result
      Proceed to
      NEXT

    NEXT

  3. CHECK SYMPTOMS


    1. A01VR92C05
      *a Switch Illumination

      Perform the following procedure, operate the rheostat switch again, and check if illumination brightness adjustment is possible (including adjustment of other devices such as the radio receiver assembly).


      1. Check if the remote touch (remote operation controller assembly) is in self-diagnostic mode. If it is, cancel self-diagnostic mode.

        Click here

        Tech Tips

        When the remote touch (remote operation controller assembly) is in self-diagnostic mode, the remote touch (remote operation controller assembly) switch illumination may remain on.

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

        Tech Tips

        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 it to the tail or head position.

        Tech Tips

        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

    B

    GO TO METER / GAUGE SYSTEM Click here

    C

    END

    A

  4. REMOTE TOUCH SELF CHECK (SWITCH ILLUMINATION CHECK)


    1. Activate self-diagnostic mode.

      Click here

    2. A01VRWZC02
      *a Switch Illumination
      *b Touchpad

      Operate the touchpad diagonally from the lower left to the upper right and check that the brightness of the switch illumination changes.

      Note

      Since the touchpad may recognize a pinch in/out or flick operation if operated with 2 fingers, always use 1 finger to operate the touchpad in self-diagnostic mode.

      OK
      Brightness changes according to touchpad operation.
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE REMOTE TOUCH (REMOTE OPERATION CONTROLLER ASSEMBLY) Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (ILLUMINATION SIGNAL)


    1. Disconnect the O75 remote touch (remote operation controller assembly) connector.

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      O75-2 (ILL+) - Body ground Light control switch in tail or head position

      11 to 14 V*1

      9.5 to 14 V*2

      • *1: w/o Stop and Start System

        *2: w/ Stop and Start System

      Result
      Result Proceed to
      OK A
      NG (w/o Stop and Start System) B
      NG (w/ Stop and Start System) C

    B

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    C

    GO TO STOP AND START SYSTEM Click here

    A

  6. CHECK HARNESS AND CONNECTOR (REMOTE TOUCH (REMOTE OPERATION CONTROLLER ASSEMBLY) - COMBINATION METER ASSEMBLY)


    1. Disconnect the O75 remote touch (remote operation controller assembly) connector.

    2. Disconnect the O3 combination meter assembly connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      O75-5 (ILL-) - O3-39 (ILL-) Always Below 1 Ω
      O75-5 (ILL-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE REMOTE TOUCH (REMOTE OPERATION CONTROLLER ASSEMBLY) Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR