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EVAP Control Pressure Sensor

Remove EVAP control system pressure sensor with its harness connector connected.
Remove EVAP control system pressure sensor from EVAP canister.
Do not reuse the O-ring, replace it with a new one.
Install a vacuum pump to EVAP control system pressure sensor.

Turn ignition switch ON and check output voltage between ECM terminal 32 and ground under the following conditions.

APPLIED VACUUM AND VOLTAGE

Applied vacuum kPa (mmHg, inHg)	Voltage V
Not applied	1.8 - 4.8
-26.7 (-200, -7.87)	2.1 to 2.5V lower than above value

CAUTION:

Always calibrate the vacuum pump gauge when using it.
Do not apply below -93.3 kPa (-700 mmHg, -27.56 inHg) or pressure over 101.3 kPa (760 mmHg, 29.92 inHg).

Fig 1: Checking Output Voltage Between ECM Terminal 32 & Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

If NG, replace EVAP control system pressure sensor.