REAR SEAT ENTERTAINMENT SYSTEM (w/ Front Center Speaker) Visual Mute Signal Circuit between Navigation ECU and Television Display

DESCRIPTION

This is the visual mute signal circuit from the navigation ECU sub-assembly to the television display assembly.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. INSPECT NAVIGATION ECU SUB-ASSEMBLY

   
   
   1. 

      Text in Illustration

      *a	Component with harness connected (Navigation ECU Sub-assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition F24-4 (VMTR) - Body ground RSE is playing → Source is changed Above 3.5 V → Below 1 V

   
   

   NG

   CHECK HARNESS AND CONNECTOR (TELEVISION DISPLAY ASSEMBLY - NAVIGATION ECU SUB-ASSEMBLY) Click here

   OK

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

2. CHECK HARNESS AND CONNECTOR (TELEVISION DISPLAY ASSEMBLY - NAVIGATION ECU SUB-ASSEMBLY)

   
   

   1. Disconnect the navigation ECU sub-assembly connector.

   2. Disconnect the television display assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition S3-17 (VMTR) - F24-4 (VMTR) Always Below 1 Ω S3-17 (VMTR) - Body ground Always 10 kΩ or higher

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

3. INSPECT NAVIGATION ECU SUB-ASSEMBLY

   
   

   1. Reconnect the navigation ECU sub-assembly connector.

   2. 

      Text in Illustration

      *a	Front view of wire harness connector (to Television Display Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition S3-17 (VMTR) - Body ground Display is operating Above 3.5 V

   
   

   NG

   REPLACE NAVIGATION ECU SUB-ASSEMBLY Click here

   OK

   REPLACE TELEVISION DISPLAY ASSEMBLY Click here