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

DESCRIPTION

This is the mute signal circuit between the disc player assembly and television display assembly.

WIRING DIAGRAM

PROCEDURE

1. CHECK MUTE SIGNAL CIRCUIT

   
   
   1. 

      Text in Illustration

      *A	for Roof
      *B	for Center Console Side
      *a	Component with harness connected (Television Display Assembly)

      Remove the television display assembly connector still connected.

      
      

      • for Roof: Click here.

      • for Center Console Side: Click here.

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

      Standard Voltage
      for Roof Tester Connection Condition Specified Condition z24-20 (MUT2) - Body ground Disc player assembly playing → Source changed Higher than 3.5 V → Below 1 V
      for Center Console Side Tester Connection Condition Specified Condition R87-20 (MUT2) - Body ground Disc player assembly 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 (DISC PLAYER ASSEMBLY - TELEVISION DISPLAY ASSEMBLY)

   
   

   • *1: for 4-passenger with Ottoman

   • *2: except 4-passenger with Ottoman

   
   

   1. for Roof:

      
      

      1. Disconnect the z24 television display assembly connector.

      2. Disconnect the z17*1 or Z90*2 disc player assembly connector.

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

         Standard Resistance
         for 4-passenger with Ottoman Tester Connection Condition Specified Condition z24-26 (MUT2) - z17-6 (MUTE) Always Below 1 Ω z24-26 (MUT2) or z17-6 (MUTE) - Body ground Always 10 kΩ or higher
         except 4-passenger with Ottoman Tester Connection Condition Specified Condition z24-26 (MUT2) - R90-6 (MUTE) Always Below 1 Ω z24-26 (MUT2) or R90-6 (MUTE) - Body ground Always 10 kΩ or higher

   2. for Center Console Side:

      
      

      1. Disconnect the R87 television display assembly connector.

      2. Disconnect the z17*1 or Z90*2 disc player assembly connector.

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

         Standard Resistance
         for 4-passenger with Ottoman Tester Connection Condition Specified Condition R87-26 (MUT2) - z17-6 (MUTE) Always Below 1 Ω R87-26 (MUT2) or z17-6 (MUTE) - Body ground Always 10 kΩ or higher
         except 4-passenger with Ottoman Tester Connection Condition Specified Condition R87-26 (MUT2) - R90-6 (MUTE) Always Below 1 Ω R87-26 (MUT2) or R90-6 (MUTE) - Body ground Always 10 kΩ or higher

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

3. CHECK DISC PLAYER ASSEMBLY

   
   

   1. Replace the disc player assembly with a new or known good one.

      
      

      • for 4-Passenger with Ottoman: Click here.

      • for 5-Passenger with Ottoman: Click here.

      • except Ottoman: Click here.

   2. Check that the mute signal circuit functioning normally.

      OK
      The mute signal circuit functioning normally.

      Result

      Result	Proceed to
      OK	A
      NG (for Roof)	B
      NG (for Center Console Side)	C

   
   

   A

   END (DISC PLAYER ASSEMBLY IS DEFECTIVE)

   B

   REPLACE TELEVISION DISPLAY ASSEMBLY Click here

   C

   REPLACE TELEVISION DISPLAY ASSEMBLY Click here