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

DTC Code DTC Name
Display Signal Circuit between Navigation ECU and Radio Receiver

DESCRIPTION

This circuit sends a DVD image signal from the radio receiver assembly to the display and navigation module display.

WIRING DIAGRAM

E190587E05

PROCEDURE

  1. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - DISPLAY AND NAVIGATION MODULE DISPLAY)

    1. Disconnect the H1 radio receiver assembly connector.

    2. Disconnect the H3 display and navigation module display connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      H1-8 (NTSC) - H3-9 (VV+)

      Always

      Below 1 Ω

      H1-22 (GND) - H3-20 (VV-)

      Always

      Below 1 Ω

      H1-8 (NTSC) - Body ground

      Always

      10 kΩ or higher

      H1-22 (GND) - Body ground

      Always

      10 kΩ or higher

      H1-7 (SLD) - Body ground

      Always

      10 kΩ or higher

      Result

      Result

      OK

      NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK RADIO RECEIVER ASSEMBLY

    1. E201128C01

      *a

      Component with harness connected

      (Radio Receiver Assembly)

      Using an oscilloscope, check the waveform between each terminal and the body ground according to the conditions shown in the table below.

      Standard

      Tester Connection

      Condition

      Specified Condition

      H1-8 (NTSC) - Body ground

      Radio receiver is playing, image is being produced

      Waveform synchronized with image is output

      Result

      Result

      OK

      NG
    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

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    NG

    REPLACE RADIO RECEIVER ASSEMBLY

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