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

for Preparation Click here


DESCRIPTION

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

WIRING DIAGRAM


E210162E03


INSPECTION PROCEDURE

1.CHECK HARNESS AND CONNECTOR

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

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

  1. 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


    E210158E09

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



    E210164E09

  1. Disconnect the DC1 multi-media module wire connector.

  1. 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)


    E176669E40

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

  1. Check the waveform according to the table below.



    E181025E36

  1. 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

    HINT:
    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.

    Text in Illustration 
    *a
    		Component with harness connected
    (Navigation Computer Sub-assembly)
    *b
    		Synchronization Signal
    *c
    		Video Waveform



NG
REPLACE NAVIGATION COMPUTER SUB-ASSEMBLY (Click here)
OK

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