AUDIO AND VISUAL SYSTEM(for 7 Inch Display) Switch Lights of Remote Touch do not Illuminate

DESCRIPTION

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

WIRING DIAGRAM

B004EL7E19
*a from TAIL Relay
*b PANEL
*c Combination Meter Assembly
*d Remote Touch (Remote Operation Controller Assembly)

CAUTION / NOTICE / HINT

Note

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

PROCEDURE


  1. CHECK SYMPTOMS


    1. B004GOVC04
      *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 (REMOTE OPERATION CONTROLLER ASSEMBLY) SELF CHECK (SWITCH ILLUMINATION CHECK)


    1. Enter self-diagnostic mode.

      Click here

    2. B004ETNC02
      *a Switch Illumination
      *b Remote Touch Screen

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

      Note

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

      OK
      Brightness changes according to remote touch screen operation.
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE REMOTE TOUCH (REMOTE OPERATION CONTROLLER ASSEMBLY) Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (ILLUMINATION SIGNAL CIRCUIT)


    1. Disconnect the O152 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
      O152-2 (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 CONTROLLER ASSEMBLY) - COMBINATION METER ASSEMBLY)


    1. Disconnect the O152 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
      O152-5 (ILL-) - O3-39 (ILL-) Always Below 1 Ω
      O152-5 (ILL-) or O3-39 (ILL-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. REPLACE REMOTE TOUCH (REMOTE OPERATION CONTROLLER ASSEMBLY)


    1. Replace the remote touch (remote operation controller assembly) with a new or known good one.

      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