Inspection Procedure

1. Disconnect the navigation receiver assembly connector R16 and television display assembly connector T14.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   TESTER CONNECTION AND SPECIFIED CONDITION
   
   

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

Fig 1: Identifying Navigation Receiver Assembly R16 Television Display Assembly T14 Connector Terminals
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 the table below.

   OK 

   TESTER CONNECTION AND SPECIFIED CONDITION
   
   

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

   HINT:

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

   Fig 2: Connecting Television Display Assembly Connector R16

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Oscilloscope waveform
   1. Terminal: VV+ - Body ground

      Setting: 200 mV/DIV., 10 μs/DIV.

      Condition: DVD display is ON.

Fig 3: Oscilloscope Waveform
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE TELEVISION DISPLAY ASSEMBLY 

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