FixVault

Key Switch

WARNING: This page is about a different car, the 2006 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.

Check continuity between terminals 1 and 2.

1 - 2 

When key is inserted to ignition key cylinder : Continuity should exist. 

When key is removed from ignition key cylinder : Continuity should not exist. 

Fig 1: Identifying Continuity Between Terminals 1 And 2
G04123942Courtesy of NISSAN MOTOR CO., U.S.A.