DVD Image Signal Circuit between Radio Receiver and Navigation ECU: Procedure

1. Disconnect the F70 radio receiver assembly connector.
2. Disconnect the F31 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
   F70-8 (NTSC) - F31-9 (VV+)	Always	Below 1 Ω
   F70-22 (GND) - F31-20 (VV-)	Always	Below 1 Ω
   F70-8 (NTSC) - Body ground	Always	10 kΩ or higher
   F70-22 (GND) - Body ground	Always	10 kΩ or higher
   F70-7 (SLD) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Reconnect the F70 radio receiver assembly connector.
   Fig 1: Identifying F70 Radio Receiver Assembly Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check the waveform according to the table below.
3. Oscilloscope waveform
   Fig 2: Identifying Oscilloscope Waveform

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Item	Content
   Measurement terminal	F70-8 (NTSC) - Body ground
   Measurement setting	200 mV/DIV., 10 μs/DIV.
   Condition	DVD is played on multi-display

   HINT: 

   The video waveform changes according to the image output from the radio receiver assembly to the 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   4 

OK → See step   3