Vertical Synchronizing (VP) Signal Circuit

VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT


Description

In composite image (AUX image, camera image), transmit the vertical synchronizing (VP) signal and horizontal synchronizing (HP) signal from display unit to AV control unit so as to synchronize the RGB images displayed with AV control unit such as the image quality adjusting menu, etc.




VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT


Diagnosis Procedure

Regarding Wiring Diagram information, Electrical Diagrams.
1.CHECK CONTINUITY VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT





1. Turn ignition switch OFF.
2. Disconnect display unit connector M93 and AV control unit connector M43.
3. Check continuity between display unit harness connector M93
(A) terminal 20 and AV control unit harness connector M43 (B) terminal 29.





4. Check continuity between display unit harness connector M93
(A) terminal 20 and ground.





Are continuity results as specified?
YES - GO TO 2.
NO - Repair harness or connector.
2.CHECK VERTICAL SYNCHRONIZING (VP) SIGNAL





1. Connect display unit connector M93 and AV control unit connector M43.
2. Turn ignition switch ON.
3. Check signal between display unit harness connector M93 terminal 20 and ground.





Are voltage readings as specified?
YES - Replace AV control unit. AV Control Unit.
NO - Replace display unit. Display Unit.