WARNING: This page is about a different car, the 2009 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Heated Seat - Wiring Diagram
Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 2: Identifying Heated Seat Connector Terminal (1 Of 4)
Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 3: Identifying Heated Seat Connector Terminal (2 Of 4)
Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 4: Identifying Heated Seat Connector Terminal (3 Of 4)
Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 5: Identifying Heated Seat Connector Terminal (4 Of 4)