VDC Off Switch

WARNING: This page is about a different car, the 2005 Nissan 350Z. However, it is still accessible from the selected car via links, so may be relevant.

Turn ignition switch OFF, and disconnect the VDC OFF switch connector M9, and check the continuity between terminals 1 (L/Y) and 2.
1. 1-2 :Continuity should exist when pushing the switch.
  continuity should not exist when releasing the switch.
Fig 1: Checking Continuity Between VDC Off Switch Connector M9 Terminals 1 & 2
Courtesy of NISSAN MOTOR CO., U.S.A.