REAR SEAT ENTERTAINMENT SYSTEM Visual Mute Signal Circuit between Radio Receiver and Multi-display Controller

DESCRIPTION

This is the visual mute signal circuit between the radio receiver assembly and the multi-display controller sub-assembly.

WIRING DIAGRAM

B004TZOE15
*1 Multi-display Controller Sub-assembly
*2 Radio Receiver Assembly

PROCEDURE


  1. CHECK MULTI-DISPLAY CONTROLLER SUB-ASSEMBLY


    1. B004WIZC02
      *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
      L138-8 (VMTR) - Body ground

      RSE playing →

      Source changed

      Higher than 3.5 V

      → Below 1 V
      Result
      Proceed to
      OK
      NG

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

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


    1. Disconnect the L138 multi-display controller sub-assembly connector.

    2. Disconnect the G53 radio receiver assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L138-8 (VMTR) - G53-20 (VMTR) Always Below 1 Ω
      L138-8 (VMTR) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK RADIO RECEIVER ASSEMBLY


    1. B004U92C01
      *a

      Front view of wire harness connector

      (Multi-display Controller Sub-assembly)

      Disconnect the L138 multi-display controller sub-assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      L138-8 (VMTR) - 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 RADIO RECEIVER ASSEMBLY Click here