Bose Audio

HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT

Description

In composite 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.


Diagnosis Procedure


1. CHECK CONTINUITY HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect display unit connector and AV control unit connector.
3.Check continuity between display unit harness connector and AV control unit harness connector.





4.Check continuity between display unit harness connector and ground.





Is the inspection result normal?
YES- GO TO 2.
NO- Repair harness or connector.

2. CHECK HORIZONTAL SYNCHRONIZING (HP) SIGNAL

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





Is the inspection result normal?
YES- Replace AV control unit. Refer to "Exploded View" Without Navigation.
NO- Replace display unit. Refer to "Exploded View" Without Navigation.