REAR SEAT ENTERTAINMENT SYSTEM Sound Signal Circuit between Headphone Terminal and Television Display

DESCRIPTION

This circuit sends a sound signal from the television display to the headphone terminal.

WIRING DIAGRAM

A009695E07

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK HEADPHONES


    1. Check the malfunctioning headphones.

      Result
      Result Proceed to
      Malfunction in headphone RH side A
      Malfunction in headphone LH side B

    B

    CHECK HARNESS AND CONNECTOR (TELEVISION DISPLAY - HEADPHONE TERMINAL LH) Click here

    A

  2. CHECK HARNESS AND CONNECTOR (TELEVISION DISPLAY - HEADPHONE TERMINAL RH)


    1. Disconnect the W14 television display assembly connector.

    2. Disconnect the T4 headphone terminal RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      W14-20 (HP2R) - T4-1 (HP2R) Always Below 1 Ω
      W14-18 (HP2L) - T4-2 (HP2L) Always Below 1 Ω
      W14-19 (SLD2) - T4-3 (SGN2) Always Below 1 Ω
      W14-20 (HP2R) - Body ground Always 10 kΩ or higher
      W14-18 (HP2L) - Body ground Always 10 kΩ or higher
      W14-19 (SLD2) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK TELEVISION DISPLAY ASSEMBLY


    1. A009AECE24
      Text in Illustration
      *a

      Component with harness connected

      (Television Display Assembly)

      Using an oscilloscope, check the waveform between each terminal and the body ground according to the conditions as shown in the table below.

      Waveform
      Tester Connection Condition Specified Condition
      W14-20 (HP2R) - Body ground RSE Playing Waveform synchronized with sound is output
      W14-18 (HP2L) - Body ground

    NG

    REPLACE TELEVISION DISPLAY ASSEMBLY Click here

    OK

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

  4. CHECK HARNESS AND CONNECTOR (TELEVISION DISPLAY - HEADPHONE TERMINAL LH)


    1. Disconnect the W14 television display assembly connector.

    2. Disconnect the T2 headphone terminal LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      W14-17 (HP1R) - T2-1 (HP1R) Always Below 1 Ω
      W14-15 (HP1L) - T2-2 (HP1L) Always Below 1 Ω
      W14-16 (SLD1) - T2-3 (SGN1) Always Below 1 Ω
      W14-17 (HP1R) - Body ground Always 10 kΩ or higher
      W14-15 (HP1L) - Body ground Always 10 kΩ or higher
      W14-16 (SLD1) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK TELEVISION DISPLAY ASSEMBLY


    1. A009AECE25
      Text in Illustration
      *a

      Component with harness connected

      (Television Display Assembly)

      Using an oscilloscope, check the waveform between each terminal and the body ground according to the conditions as shown in the table below.

      Waveform
      Tester Connection Condition Specified Condition
      W14-17 (HP1R) - Body ground RSE Playing Waveform synchronized with sound is output
      W14-15 (HP1L) - Body ground

    NG

    REPLACE TELEVISION DISPLAY ASSEMBLY Click here

    OK

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