REAR SEAT ENTERTAINMENT SYSTEM Visual Mute Signal Circuit between Radio Receiver and Television Display

DESCRIPTION

This is the visual mute signal circuit between the multi-media module receiver assembly and the television display assembly.

WIRING DIAGRAM

PROCEDURE

1. CHECK VISUAL MUTE SIGNAL CIRCUIT

   
   
   1. 

      Text in Illustration

      *a	Component with harness connected (Multi-media Module Receiver Assembly)

      Remove the multi-media module receiver assembly connector still connected Click here.

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

      Standard Voltage
      Tester Connection Condition Specified Condition L146-9 (VMTR) - Body ground RSE playing → Source changed Higher than 3.5 V → Below 1 V

   
   

   OK

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

   NG

2. CHECK HARNESS AND CONNECTOR (MULTI-MEDIA MODULE RECEIVER ASSEMBLY - TELEVISION DISPLAY ASSEMBLY)

   
   

   1. Disconnect the L146 multi-media module receiver assembly connector.

   2. Disconnect the z24*1 or R87*2 television display assembly connector.

      
      

      • *1: for Roof

      • *2: for Center Console Side

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

      Standard Resistance
      for Roof
      Tester Connection Condition Specified Condition L146-9 (VMTR) - z24-28 (VMTR) Always Below 1 Ω 146-9 (VMTR) or z24-28 (VMTR) - Body ground Always 10 kΩ or higher
      for Center Console Side
      Tester Connection Condition Specified Condition L146-9 (VMTR) - R87-28 (VMTR) Always Below 1 Ω L146-9 (VMTR) or R87-28 (VMTR) - Body ground Always 10 kΩ or higher

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

3. CHECK TELEVISION DISPLAY ASSEMBLY

   
   

   1. Replace the television display assembly with a new or known good one.

      
      

      • for Roof: Click here.

      • for Center Console Side: Click here.

   2. Check that the visual mute signal circuit functioning normally.

      OK
      The visual mute signal circuit functioning normally.

   
   

   OK

   END (TELEVISION DISPLAY ASSEMBLY IS DEFECTIVE)

   NG

   REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here