NAVIGATION SYSTEM (for HDD) DVD Image Signal Circuit between Navigation ECU and Multi-display

DESCRIPTION

This circuit sends a DVD image signal from the navigation computer sub-assembly to the multi-display.

WIRING DIAGRAM

A003W2JE03

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR


    1. Disconnect the H61 navigation computer sub-assembly connector.

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H61-10 (NTSF) - H20-2 (NTS1) Always Below 1 Ω
      H61-21 (SGD1) - H20-7 (SGN1) Always Below 1 Ω
      H61-10 (NTSF) - Body ground Always 10 kΩ or higher
      H61-21 (SGD1) - Body ground Always 10 kΩ or higher
      H61-22 (SLD1) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. INSPECT MULTI-MEDIA MODULE WIRE


    1. A003XI8E09

      Disconnect the H20 multi-media module wire connector.

    2. A003VTLE09

      Disconnect the DC1 multi-media module wire connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H20-2 (NTS1) - DC1-4 (NTS1) Always Below 1 Ω
      H20-7 (SGN1) - DC1-16 (SGN1) Always Below 1 Ω
      Text in Illustration
      *a

      Component without harness connected

      (Multi-media Module Wire)

    NG

    REPLACE MULTI-MEDIA MODULE WIRE Click here

    OK

  3. INSPECT NAVIGATION COMPUTER SUB-ASSEMBLY (DVD IMAGE SIGNAL)


    1. A003WJ9E40

      Reconnect the H61 navigation computer sub-assembly connector.

    2. Check the waveform according to the table below.

    3. A003YNAE36
      Text in Illustration
      *a

      Component with harness connected

      (Navigation Computer Sub-assembly)
      *b Synchronization Signal
      *c Video Waveform

      Oscilloscope waveform

      Item Content
      Measurement terminal H61-10 (NTSF) - Body ground
      Measurement setting 200 mV/DIV., 10 μs/DIV.
      Condition DVD is playing on multi-display

      Tech Tips

      The video waveform changes according to the image output from the navigation computer sub-assembly to the multi-display, but the synchronization signal does not change.


    NG

    REPLACE NAVIGATION COMPUTER SUB-ASSEMBLY Click here

    OK

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