Navigation System Display Signal Circuit Between Multi-Display And Radio Receiver

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - MULTI-DISPLAY)

INSPECT RADIO RECEIVER (OUTPUT SIGNAL)

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

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

1. Reconnect the radio receiver connector J62.
   

2. Measure the waveform according to the table below.
   

   OK:

   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 μs/DIV.

   Condition: DVD display is on.