NAVIGATION SYSTEM (for HDD) DVD Image Signal Circuit between Radio Receiver and Navigation ECU

DESCRIPTION

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

WIRING DIAGRAM

A003Z63E39

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR


    1. Disconnect the H50 radio receiver assembly connector.

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H50-8 (NTSC) - H61-9 (VV+) Always Below 1 Ω
      H50-22 (GND) - H61-20 (VV-) Always Below 1 Ω
      H50-8 (NTSC) - Body ground Always 10 kΩ or higher
      H50-22 (GND) - Body ground Always 10 kΩ or higher
      H50-7 (SLD) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. INSPECT RADIO RECEIVER ASSEMBLY (DVD IMAGE SIGNAL)


    1. A003XFRE42

      Reconnect the H50 radio receiver assembly connector.

    2. Check the waveform according to the table below.

    3. A003YNAE36
      Text in Illustration
      *a

      Component with harness connected

      (Radio Receiver Assembly)
      *b Synchronization Signal
      *c Video Waveform

      Oscilloscope waveform

      Item Content
      Measurement terminal H50-8 (NTSC) - 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 radio receiver assembly to the navigation computer sub-assembly, but the synchronization signal does not change.


    NG

    REPLACE RADIO RECEIVER ASSEMBLY Click here

    OK

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