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. 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 multi-display 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

A003YFYE03

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-MEDIA MODULE WIRE


    1. A003VJJE04
      Text in Illustration
      *a

      Component with harness connected

      (Multi-media Module Wire)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      H20-9 (VMTI) - Body ground Power 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 WIRE - MULTI-MEDIA MODULE RECEIVER ASSEMBLY) Click here

    OK

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

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


    1. Disconnect the H20 multi-media module wire connector.

    2. Disconnect the H147 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
      H20-9 (VMTI) - H147-10 (VMTF) Always Below 1 Ω
      H20-9 (VMTI) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. REPLACE MULTI-MEDIA MODULE WIRE


    1. Replace the multi-media module wire and check if the navigation system operates normally Click here.

      OK
      The navigation system operates normally.

    NG

    REPLACE MULTI-DISPLAY Click here

    OK

    END

  4. REPLACE MULTI-DISPLAY


    1. Replace the multi-display and check if the navigation system operates normally Click here.

      OK
      The navigation system operates normally.

    NG

    REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here

    OK

    END