With GST

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.

Lift up drive wheels.
Start engine (VDC switch or TCS switch OFF) and warm it up to normal operating temperature.
Turn ignition switch OFF, wait at least 10 seconds.
Start engine and wait at least 70 seconds.
Set voltmeter probes to ECM terminals 32 (EVAP control system pressure sensor signal) and ground.
Check EVAP control system pressure sensor value at idle speed and note it.

Establish and maintain the following conditions for at least 1 minute.

Fig 1: Setting Voltmeter Probes To ECM Terminals 32 (EVAP Control System Pressure Sensor Signal) & Ground

Courtesy of NISSAN MOTOR CO., U.S.A.

CONDITION REFERENCE CHART

Air conditioner switch	ON
Headlamp switch	ON
Rear window defogger switch	ON
Engine speed	Approx. 3, 000 rpm
Shift lever	Any position other than P, N or R

Verify that EVAP control system pressure sensor value stays 0.1V less than the value at idle speed (measured at step 6) for at least 1 second.
If NG, go to "DIAGNOSTIC PROCEDURE ".