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 (for 12.3 Inch) or multi-display (for 8 Inch) 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

A01FUXXE63

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. CHECK VEHICLE TYPE


    1. Check the vehicle type.

      Result
      Result Proceed to
      for 12.3 Inch A
      for 8 Inch B

    B

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

    A

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


    1. Disconnect the N62 accessory meter assembly connector.

    2. Disconnect the N164 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) - N164-10 (VMTF) Always Below 1 Ω
      N62-11 (VMTI) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK MULTI-MEDIA MODULE RECEIVER ASSEMBLY


    1. A01FS18E87
      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 Switch Condition Specified Condition
      N164-10 (VMTF) - Body ground Power 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

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

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


    1. Disconnect the N155 multi-display connector.

    2. Disconnect the N164 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) - N164-10 (VMTF) Always Below 1 Ω
      N155-11 (VMTI) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK MULTI-MEDIA MODULE RECEIVER ASSEMBLY


    1. A01FS18E87
      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 Switch Condition Specified Condition
      N164-10 (VMTF) - Body ground Power 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

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