Key Switch

WARNING: This page is about a different car, the 2003 Infiniti I35. However, it is still accessible from the selected car via links, so may be relevant.

Check continuity between terminals of the key switch and key lock solenoid connector.

Fig 1: Checking Key Switch
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Terminal Continuity Table Of Key Switch
Courtesy of NISSAN MOTOR CO., U.S.A.