WARNING: This page is about a different car, the 2011 Infiniti M37. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Engine Control System Component Location (1 Of 4)
Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 2: Engine Control System Component Location (2 Of 4)
Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 3: Engine Control System Component Location (3 Of 4)
Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 4: Engine Control System Component Location (4 Of 4)