NAVIGATION SYSTEM Visual Mute Signal Circuit between Navigation ECU and Multi-display

DESCRIPTION

The multi-media module receiver assembly sends a visual mute signal to the accessory meter assembly (for 12.3 Inch) or multi-display (for 8 Inch). As a result, a black screen is inserted when the screen changes so that noise and distorted images are not displayed.

When an open exists in the circuit, noise and distorted images will be displayed instead of a black screen.

When a short exists in the circuit, even though the accessory meter assembly is operating normally, noise and distorted images will be displayed (black screen will not be displayed) during screen changes or the black screen will always be displayed.

WIRING DIAGRAM

A01FFQQE47

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK MULTI-MEDIA MODULE RECEIVER ASSEMBLY


    1. A01FFL7E62
      Text in Illustration
      *a

      Component with harness connected

      (Multi-media Module Receiver Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      N162-10 (VMTF) - Body ground Engine switch on (ACC), screen display changes. 3.5 V or higher → Below 1 V → 3.5 V or higher

    NG

    REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (MULTI-MEDIA MODULE RECEIVER ASSEMBLY - ACCESSORY METER ASSEMBLY OR MULTI-DISPLAY)


    1. for 12.3 Inch


      1. Disconnect the N62 accessory meter assembly connector.

      2. Disconnect the N162 multi-media module receiver assembly connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        N62-11 (VMTI) - N162-10 (VMTF) Always Below 1 Ω
        N62-11 (VMTI) - Body ground Always 10 kΩ or higher

    2. for 8 Inch


      1. Disconnect the N155 multi-display connector.

      2. Disconnect the N162 multi-media module receiver assembly connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        N155-11 (VMTI) - N162-10 (VMTF) Always Below 1 Ω
        N155-11 (VMTI) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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