REAR SEAT ENTERTAINMENT SYSTEM Mute Signal Circuit between Disc Player Controller and Multi-display Controller

DESCRIPTION

This is the mute signal circuit between the multi-display controller sub-assembly and disc player assembly.

WIRING DIAGRAM

B004TA1E47
*1 MUTE
*2 Multi-display Controller Sub-assembly
*3 Disc Player Assembly

PROCEDURE


  1. CHECK MULTI-DISPLAY CONTROLLER SUB-ASSEMBLY


    1. B004V9OC11
      *a

      Component with harness connected

      (Multi-display Controller Sub-assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      L139-16 (MUT5) - Body ground

      RSE playing →

      Source changed

      Higher than 3.5 V

      → Below 1 V
      Result
      Proceed to
      OK
      NG

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

  2. CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY CONTROLLER SUB-ASSEMBLY - TELEVISION DISPLAY ASSEMBLY)


    1. Disconnect the L139 multi-display controller sub-assembly connector.

    2. Disconnect the L140 disc player assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L139-16 (MUT5) - L140-6 (MUTE) Always Below 1 Ω
      L139-16 (MUT5) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK DISC PLAYER ASSEMBLY


    1. B004S8ZC01
      *a

      Front view of wire harness connector

      (Multi-display Controller Sub-assembly)

      Disconnect the L140 disc player assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      L139-16 (MUT5) - Body ground RSE playing Higher than 3.5 V
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE MULTI-DISPLAY CONTROLLER SUB-ASSEMBLY Click here

    NG

    REPLACE DISC PLAYER ASSEMBLY Click here