Without Navigation

HP SIGNAL CIRCUIT (FRONT DISPLAY UNIT TO AV CONTROL UNIT)


WITHOUT NAVIGATION : Description

In composite image (AUX image), transmit the vertical synchronizing (VP) signal and horizontal synchronizing
(HP) signal from front 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.




HP SIGNAL CIRCUIT (FRONT DISPLAY UNIT TO AV CONTROL UNIT)


WITHOUT NAVIGATION : Diagnosis Procedure

1.CHECK CONTINUITY HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect front display unit connector and AV control unit connector.
3. Check continuity between front display unit harness connector terminal 8 and AV control unit harness connector terminal 45.

8 - 45: Continuity should exist.

4. Check continuity between front display unit harness connector terminal 8 and ground.

8 - Ground: Continuity should not exist.

Is the inspection result normal?
YES - GO TO 2.
NO - Repair harness or connector.
2.CHECK HORIZONTAL SYNCHRONIZING (HP) SIGNAL
1. Connect front display unit connector and AV control unit connector.
2. Turn ignition switch ON.
3. Check signal between front display unit harness connector terminal 8 and ground.





Is the inspection result normal?
YES - Replace AV control unit.
NO - Replace front display unit.