Display Signal Circuit between Television Display Assembly and Radio and Navigation Assembly: Wiring Diagram

1. Disconnect the radio and navigation assembly connector R16 and television display assembly connector T14.
2. Measure the resistance according to the value(s) in RADIO AND NAVIGATION ASSEMBLY - TELEVISION DISPLAY ASSEMBLY  .

   Standard resistance 

   RADIO AND NAVIGATION ASSEMBLY - TELEVISION DISPLAY ASSEMBLY
   
   

   Tester connection	Condition	Specified condition
   VV+ - NTSC	Always	Below 1 Ω
   VV- - SGN1	Always	Below 1 Ω
   VV+ - Body ground	Always	10 kΩ or higher
   VV- - Body ground	Always	10 kΩ or higher

   Fig 2: Checking Harness And Connector (Radio And Navigation Assembly - Television Display Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: GO TO NEXT STEP. 

1. Reconnect the television display assembly connector R16.
2. Measure the waveform according to TELEVISION DISPLAY ASSEMBLY  .

   OK 

   TELEVISION DISPLAY ASSEMBLY
   
   

   Tester connection	Condition	Specified condition
   VV+ - Body ground	DVD display is ON	A waveform synchronized with display signals is output

   Fig 3: Inspecting Television Display Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   HINT:

   The waveform pattern may differ from that shown in Fig 4 due to differences in oscilloscope setting. A normal television display assembly operating condition can be determined if any waveform is output.

3. Oscilloscope waveform
   1. Terminal: VV+ - Body ground Setting: 200 mV/DIV., 10 millisec/DIV. Condition: DVD display is ON.
   Fig 4: Identifying Oscilloscope Waveform

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE TELEVISION DISPLAY ASSEMBLY 

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE