With GST

Turn ignition switch ON.
Check voltage between ECM terminal 102 (PNP switch signal) and ground under the following conditions.

Fig 1: Voltage Specification Chart
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Checking Voltage Between ECM Terminal 102 (PNP Switch Signal)
Courtesy of NISSAN MOTOR CO., U.S.A.
If NG, go to "DIAGNOSTIC PROCEDURE ".