REAR SEAT ENTERTAINMENT SYSTEM Visual Mute Signal Circuit between Multi-display Controller and Television Display Assembly

DESCRIPTION

This is the visual mute signal circuit from the multi-display controller sub-assembly to each television display assembly.

WIRING DIAGRAM

B004SGWE22
*a Television Display Assembly RH
*b Television Display Assembly LH
*c Multi-display Controller Sub-assembly

PROCEDURE


  1. CHECK MULTI-DISPLAY CONTROLLER SUB-ASSEMBLY


    1. B004V9OC09
      *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
      L139-5 (VMT2) - Body ground

      RSE playing

      → Source changed

      Higher than 3.5 V

      → Below 1 V
      L139-4 (VMT1) - 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 L141 television display assembly LH connector.

    3. Disconnect the L142 television display assembly RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L139-5 (VMT2) - L141-2 Always Below 1 Ω
      L139-4 (VMT1) - L142-2 Always Below 1 Ω
      L139-5 (VMT2) - Body ground Always 10 kΩ or higher
      L139-4 (VMT1) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK TELEVISION DISPLAY ASSEMBLY


    1. B004S8ZC03
      *a

      Front view of wire harness connector

      (to Multi-display Controller Sub-assembly)

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

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

      Standard Voltage
      for RH
      Tester Connection Condition Specified Condition
      L139-4 (VMT1) - Body ground Television display assembly ON Higher than 3.5 V
      for LH
      Tester Connection Condition Specified Condition
      L139-5 (VMT2) - Body ground Television display assembly ON Higher than 3.5 V
      Result
      Result Proceed to
      OK A
      NG (for RH) B
      NG (for LH) C

    A

    REPLACE MULTI-DISPLAY CONTROLLER SUB-ASSEMBLY Click here

    B

    REPLACE TELEVISION DISPLAY ASSEMBLY RH Click here

    C

    REPLACE TELEVISION DISPLAY ASSEMBLY LH Click here