WARNING: This page is about a different car, the 2005 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Wiring Diagram - BL-KEYLES-01
Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 2: Smart Entrance Control Unit Terminals And Reference Value Chart
Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 3: Wiring Diagram - BL-KEYLES-02
Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 4: Smart Entrance Control Unit Terminals And Reference Value Chart
Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 5: Wiring Diagram - BL-KEYLES-03
Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 6: Smart Entrance Control Unit Terminals And Reference Value Chart