Composite Image Signal Circuit (Video Distributor To AV Control Unit)

COMPOSITE IMAGE SIGNAL CIRCUIT (VIDEO DISTRIBUTOR TO AV CONTROL UNIT)


Description

Video distributor receives the image signal from the DVD player and auxiliary input jack and then transmits it to the AV control unit and rear display unit.





COMPOSITE IMAGE SIGNAL CIRCUIT (VIDEO DISTRIBUTOR TO AV CONTROL UNIT)


Diagnosis Procedure

1.CHECK CONTINUITY COMPOSITE IMAGE SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect video distributor connector and AV control unit connector.
3. Check continuity between video distributor harness connector and AV control 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 COMPOSITE IMAGE SIGNAL
1. Connect video distributor connector and AV control unit connector.
2. Turn ignition switch ON.
3. Check signal between AV control unit harness connector using an oscilloscope.




Is the inspection result normal?
YES - Replace AV control unit.
NO - Replace video distributor.