WARNING: This page is about a different car, the 2013 Infiniti M56. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Engine Control System Symptoms Chart (Mechanical And Other) (1 Of 3)
Courtesy of NISSAN NORTH AMERICA, INC.
Fig 2: Engine Control System Symptoms Chart (Mechanical And Other) (2 Of 3)
Courtesy of NISSAN NORTH AMERICA, INC.
Fig 3: Engine Control System Symptoms Chart (Mechanical And Other) (3 Of 3)