DVD Image Signal Circuit between Radio Receiver and Navigation ECU (To 8/2009): Procedure

1. Disconnect the radio receiver assembly connector.
   Fig 1: Identifying Radio Receiver Assembly Connector

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2. Disconnect the display and navigation module display connector.
   Fig 2: Identifying Display And Navigation Module Display 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
   G12-8 (NTSC) - G5-9 (VV+)	Always	Below 1 Ω
   G12-22 (GND) - G5-20 (VV-)	Always	Below 1 Ω
   G12-8 (NTSC) - Body ground	Always	10 kΩ or higher
   G12-22 (GND) - Body ground	Always	10 kΩ or higher
   G12-7 (SLD) - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Radio Receiver Assembly)
   *2	Front view of wire harness connector (to Display and Navigation Module Display)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Reconnect the radio receiver assembly connector.
   Fig 3: Identifying Radio Receiver Assembly 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	G12-8 (NTSC) - 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 radio receiver assembly to display and navigation module display, but the synchronization signal does not change.

   TEXT IN ILLUSTRATION
   
   

   *1	Component with harness connected (Radio Receiver Assembly)
   *2	Synchronization Signal
   *3	Video Waveform

NG → See step   3 

OK → See step   4