Display Signal Circuit between Multi-display and Radio Receiver: Wiring Diagram

1. Disconnect the multi-display connector J52 and radio receiver J62 connector.
2. Measure the resistance according to the value(s) in the table below.
   STANDARD RESISTANCE
   
   

   Tester connection	Condition	Specified condition
   GND - SGD1	Always	Below 1 Ω
   NTSC - NTSC	Always	Below 1 Ω
   SLD - SGND	Always	Below 1 Ω
   NTSC - Body ground	Always	10 kΩ or higher
   GND - Body ground	Always	10 kΩ or higher

   Fig 2: Identifying Multi-Display Connector J52 And Radio Receiver J62 Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step. 

1. Reconnect the radio receiver connector J62.
   Fig 3: Identifying Radio Receiver Connector J62

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

   OK 

   SPECIFIED CONDITION
   
   

   Tester connection	Condition	Specified condition
   NTSC - 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 settings. A normal radio receiver operating condition can be determined if any waveform is output.

   Oscilloscope wave

   Terminal: NTSC - Body ground

   Setting: 200 mV/DIV. 10 s/DIV.

   Condition: DVD display is on.

   Fig 4: GND Oscilloscope Waveform Graph

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE RADIO RECEIVER 

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