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

DESCRIPTION

The multi-media module receiver assembly sends a visual mute signal to the multi-display assembly. As a result, a black screen is displayed 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 multi-display 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

A01G9BCE46

INSPECTION PROCEDURE

Note

Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Navigation System Click here.

PROCEDURE


  1. INSPECT MULTI-DISPLAY ASSEMBLY


    1. A01G8Z6E65
      Text in Illustration
      *a

      Component with harness connected

      (Multi-display Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      H93-11 (VMTI) - Body ground

      Engine switch on (ACC)

      Screen display changes

      3.5 V or higher

      → Below 1 V

      → 3.5 V or higher

    NG

    CHECK HARNESS AND CONNECTOR (MULTI-MEDIA MODULE RECEIVER ASSEMBLY - MULTI-DISPLAY ASSEMBLY) Click here

    OK

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

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


    1. Disconnect the H97 multi-media module receiver assembly connector.

    2. Disconnect the H93 multi-display assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H97-10 (VMTF) - H93 -11 (VMTI) Always Below 1 Ω
      H97-10 (VMTF) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. REPLACE MULTI-DISPLAY ASSEMBLY


    1. Replace the multi-display assembly with a new or known good one Click here.

    2. Check that the screen display is normal.

      OK
      Screen display is normal.

    NG

    REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here

    OK

    END