Composite Image Signal Circuit (AV Control Unit to Front Display Unit)

COMPOSITE IMAGE SIGNAL CIRCUIT (AV CONTROL UNIT TO FRONT DISPLAY UNIT)





Description
- DVD is played by inserting DVD into the AV control unit.
- DVD image signals are transmitted to the front display unit and video distributor.
- AV control unit receives the image signal from the auxiliary input jacks and USB (video data) and then transmits it to the video distributor.
- Video distributor receives the image signal from the AV control unit and then transmits it to the rear display unit.




Diagnosis Procedure
1.CHECK CONTINUITY COMPOSITE IMAGE SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect AV control unit connector and front display unit connector.
3. Check continuity between AV control unit harness connector and front display unit harness connector.





4. Check continuity between AV control unit harness connector and ground.





Is the inspection result normal?
YES - GO TO 2.
NO - Repair harness or connector.
2.CHECK AUX COMPOSITE SIGNAL
1. Connect AV control unit connector and front display unit connector.
2. Turn ignition switch ON.
3. Check signal between auxiliary input jacks harness connector and ground.





Is the inspection result normal?
YES - Replace front display unit. Exploded View Navigation (Twin Monitor).
NO - Replace AV control unit. Exploded View Navigation (Twin Monitor).