Display Signal Circuit between Television Display Assembly and Navigation Receiver Assembly: Procedure

1. Disconnect the E25 navigation receiver assembly connector.
2. Disconnect the Q13 television display assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   E25-2 (VV+) - Q13-11 (NTS1)	Always	Below 1 Ω
   E25-6 (VV-) - Q13-10 (SG3)	Always	Below 1 Ω
   E25-2 (VV+) - Body ground	Always	10 kΩ or higher
   E25-6 (VV-) - Body ground	Always	10 kΩ or higher
   Q13-9 (SGN1) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Reconnect the Q13 television display assembly connector.
   Fig 1: Checking Q13 Television Display Assembly Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the waveform according to the table below.

   OK

   Tester Connection	Condition	Specified Condition
   Q13-11 (NTS1) - 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 the oscilloscope setting. A normal television display assembly operating condition can be determined if any waveform is output.

3. Oscilloscope waveform
   Fig 2: Identifying Waveform 1

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Item	Content
   Measurement terminal	Q13-11 (NTS1) - Body ground
   Measurement setting	200 mV/DIV., 50 μs/DIV.
   Condition	DVD display is on

   NOTE:

   The video waveform changes according to the image output from television display assembly to navigation receiver assembly, but the synchronization signal does not change.

   TEXT IN ILLUSTRATION
   
   

   *a	Component with harness connected (Television Display Assembly)
   *b	Synchronization Signal
   *c	Video Waveform

NG → See step   4 

OK → See step   3