REAR SEAT ENTERTAINMENT SYSTEM Sound Quality is Bad Only when Disc is Played (Volume is Too Low)

DESCRIPTION

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

WIRING DIAGRAM

B005US1E03

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY CONTROLLER SUB-ASSEMBLY POWER SOURCE)


    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
      L139-11 (R2+) - L140-4 (R+) Always Below 1 Ω
      L139-12 (R2-) - L140-3 (R-) Always Below 1 Ω
      L139-13 (L2+) - L140-2 (L+) Always Below 1 Ω
      L139-14 (L2-) - L140-1 (L-) Always Below 1 Ω
      L139-11 (R2+) - Body ground Always 10 kΩ or higher
      L139-12 (R2-) - Body ground Always 10 kΩ or higher
      L139-13 (L2+) - Body ground Always 10 kΩ or higher
      L139-14 (L2-) - Body ground Always 10 kΩ or higher
      L140-5 (SLD) - Body ground Always 10 kΩ or higher
      Result
      Result
      OK
      NG

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR