EVAP Control System Pressure Sensor

Remove EVAP control system pressure sensor with its harness connector connected from EVAP canister.
Always replace O-ring 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 42 and ground under the following conditions.

Applied vacuum kPa (kg/cm² , psi)	Voltage
Not applied	1.8 - 4.8 V
-26.7 (-0.3, -4)	2.1 to 2.5 V lower than above value

CAUTION:

Always calibrate the vacuum pump gauge when using it.
Do not apply below -93.3 kPa (-0.9 kg/cm² , -14 psi) or pressure over 101.3 kPa (1.0 kg/cm² , 15 psi).

If NG, replace EVAP control system pressure sensor. Refer to , "REMOVAL AND INSTALLATION ".

Fig 1: Applying Pressure On EVA Control System Pressure Sensor Using Pump

Courtesy of NISSAN NORTH AMERICA, INC.