VDC Off 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.

Turn ignition switch OFF and disconnect VDC OFF switch connector. Check continuity between terminal 1 and terminal 2.
1 - 2:

Pressing switch will establish continuity, releasing it will break continuity.

Fig 1: Identifying Continuity Between VDC OFF Switch Terminal 1 And 2
Courtesy of NISSAN MOTOR CO., U.S.A.