WARNING: This page is about a different car, the 2002 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.
Check continuity between terminals 4 and 5.
Fig 1: Wide Open Throttle Position Switch Continuity Specifications
Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 2: Checking Wide Open Throttle Position Switch Continuity