WARNING: This page is about a different car, the 2006 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.
Work after hood ledge and radiator core support have been removed.
Fig 1: Identifying Front Side Member Service Joints (1 Of 2)
Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 2: Identifying Front Side Member Service Joints (2 Of 2)