2. Check Horizontal Synchronization Signal

WARNING: This page is about a different car, the 2004 Infiniti Q45. However, it is still accessible from the selected car via links, so may be relevant.

Connect AV control unit connector and display connector.
Turn ignition switch ON.
Check voltage signal between AV control unit harness connector M78 terminals 13 (L/Y) and 10.

Fig 1: Checking Horizontal Synchronization Signal
Courtesy of NISSAN MOTOR CO., U.S.A.

13 (L/Y) - 10: Refer to TERMINALS AND REFERENCE VALUE FOR AV CONTROL UNIT .

OK or NG

OK: GO TO 3 .
NG: Replace display.