Display Signal Circuit Between Multi-Display And Radio Receiver

NAVIGATION SYSTEM: Display Signal Circuit between Multi-display and Radio Receiver

Display Signal Circuit between Multi-display and Radio Receiver

DESCRIPTION

This is the DVD display signal circuit from the radio receiver to the multi-display.
This circuit is for a radio receiver with a built-in DVD changer.
If the vehicle is equipped with an RSE system, the radio receiver receives DVD image signals from the RSE system and transmits these signals to the multi-display through this circuit.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

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





(a) Disconnect the multi-display connector M3 and radio receiver connector R31.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
2. INSPECT RADIO RECEIVER (OUTPUT SIGNAL)





(a) Reconnect the radio receiver connector R31.





(b) Measure the waveform according to the table below.
OK:





HINT: The waveform pattern may differ from that shown in the illustration due to differences in oscilloscope settings. A normal radio receiver operating condition can be determined if any waveform is output.
(c) Reference: Oscilloscope waveform
(1) Terminal: VV+ - Body ground
Setting: 200 mV/DIV. 10 micro s/DIV.
Condition: DVD display is on.
NG -- REPLACE RADIO RECEIVER
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE