With GST

Turn ignition switch ON.
Check voltage between ECM terminal 102 (PNP switch signal) and ground under the following conditions.
If NG, go to "DIAGNOSTIC PROCEDURE ".

Fig 1: Checking Voltage Between ECM Terminal 102 & Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Voltage & Condition Table
Courtesy of NISSAN MOTOR CO., U.S.A.