DVD Image Signal Circuit between Navigation ECU and Multi-display (From 8/2009): Procedure

1. Disconnect the display and navigation module display connector.
   Fig 1: Identifying Display And Navigation Module Display Connector

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2. Disconnect the multi-display assembly connector.
   Fig 2: Identifying Multi-Display Assembly Connector

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   G5-10 (NTSF) - G2-4 (NTSC)	Always	Below 1 Ω
   G5-21 (SGD1) - G2-16 (SG)	Always	Below 1 Ω
   G5-10 (NTSF) - Body ground	Always	10 kΩ or higher
   G5-21 (SGD1) - Body ground	Always	10 kΩ or higher
   G5-22 (SLD1) - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Display and Navigation Module Display)
   *2	Front view of wire harness connector (to Multi-display Assembly)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Reconnect the display and navigation module display connector.
   Fig 3: Identifying Display And Navigation Module Display Connector

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2. Measure the waveform according to the table below.
   Fig 4: Waveform

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   OSCILLOSCOPE WAVEFORM
   
   

   Item	Content
   Measurement terminal	G5-10 (NTSF) - Body ground
   Measurement setting	200 mV/DIV, 10 μs/DIV
   Condition	DVD display is on

   NOTE:

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

   TEXT IN ILLUSTRATION
   
   

   *1	Component with harness connected (Display and Navigation Module Display)
   *2	Synchronization Signal
   *3	Video Waveform

NG → See step   3 

OK → See step   4