NAVIGATION SYSTEM Switch Lights of Remote Touch do not Illuminate

DESCRIPTION

Power is supplied to the remote touch illumination when the light control switch is in the tail or head position.

Tech Tips

Only the "HOME" and "MENU" switches on the remote touch illuminate.

WIRING DIAGRAM

A00234QE02

CAUTION / NOTICE / HINT

Note

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

PROCEDURE


  1. CONFIRM SYMPTOMS


    1. A00213KC04
      *a Switch Illumination

      Perform the following procedure and check the switch illumination again.


      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 automatic dimmer function.

      2. Set the rheostat to maximum brightness.

        Tech Tips

        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.

        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.

        OK
        Switch illumination turns on.
      Result
      Proceed to
      OK
      NG

    OK

    END

    NG

  2. REMOTE TOUCH SELF CHECK (SWITCH ILLUMINATION CHECK)


    1. Activate self check mode.

      Click here

    2. A00213KC05
      *a Switch Illumination
      *b Switch Knob

      Check switch illumination.


      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.
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE REMOTE OPERATION SWITCH Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (ILLUMINATION SIGNAL)


    1. Disconnect the K78 remote touch (remote operation board) connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      K78-9 (ILL+) - Body ground

      Power switch off

      Light control switch in tail or head position

      		 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (REMOTE TOUCH (REMOTE OPERATION BOARD) - COMBINATION METER ASSEMBLY)


    1. Disconnect the K78 remote touch (remote operation board) connector.

    2. Disconnect the K3 combination meter assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K78-16 (ILL-) - K3-39 (ILL-) Always Below 1 Ω
      K78-16 (ILL-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. REPLACE REMOTE OPERATION BOARD


    1. Replace the remote operation board.

      Click here

    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.
      Result
      Proceed to
      OK
      NG

    OK

    END

    NG

    GO TO METER / GAUGE SYSTEM Click here

  6. REPLACE REMOTE OPERATION SWITCH


    1. Replace the remote operation switch.

      Click here

    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.
      Result
      Proceed to
      OK
      NG

    OK

    END

    NG

    REPLACE REMOTE OPERATION BOARD Click here