1. Check Synchro Signal Open Or Short Circuit

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.

Disconnect rear view camera control unit connector and display connector.
Check the following:
- Continuity between rear view camera control unit harness connector B236 terminal 22 (PU) and display harness connector M82 terminal 10 (PU)
  
  Fig 1: Checking Synchro Signal Circuit For Open Or Short
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Continuity should exist.
- Continuity between display harness connector M82 terminal 10 (PU) and ground
  Continuity should not exist.

OK or NG

OK: GO TO 2 .
NG: Repair harness or connector.