WARNING: This page is about a different car, the 2003 Nissan Pathfinder and 2002 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Testing Defogger Switch (With Auto A/C & NAVI & With Manual A/C)
Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 2: Testing Defogger Switch (With Auto A/C & Without NAVI)