Composite Image Signal Circuit (Video Distributor to Rear Display Unit)

COMPOSITE IMAGE SIGNAL CIRCUIT (VIDEO DISTRIBUTOR TO REAR DISPLAY UNIT)


Description

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




COMPOSITE IMAGE SIGNAL CIRCUIT (VIDEO DISTRIBUTOR TO REAR DISPLAY UNIT)


Diagnosis Procedure

1.CHECK CONTINUITY COMPOSITE IMAGE SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect video distributor connector and rear display unit connector.
3. Check continuity between video distributor harness connector terminal 34 and rear display unit harness connector terminal 16.

34 - 16: Continuity should exist.

4. Check continuity between rear display unit harness connector terminal 16 and ground.

16 - Ground: Continuity should not exist.

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 rear display unit connector.
2. Turn ignition switch ON.
3. Check signal between rear display unit harness connector terminal 16 and ground.





Is the inspection result normal?
YES - Replace rear display unit.
NO - Replace video distributor.