Without Consult

WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.

Attach the EVAP service port adapter securely to the EVAP service port.

Fig 1: Identifying EVAP Service Port And EVAP Canister Purge Volume Control Solenoid Valve
Courtesy of NISSAN NORTH AMERICA, INC.
Also attach the pressure pump with pressure gauge to the EVAP service port adapter.

Fig 2: Installing EVAP Service Port Adapter And Pressure Pump To EVAP Service Port
Courtesy of NISSAN NORTH AMERICA, INC.
Apply battery voltage between the terminals of EVAP canister vent control valve to make a closed EVAP system.

Fig 3: Identifying EVAP Canister, Vent Control Valve And EVAP Control System Pressure Sensor
Courtesy of NISSAN NORTH AMERICA, INC.
To locate the leak, deliver positive pressure to the EVAP system until pressure gauge points reach 1.38 to 2.76 kPa (0.014 to 0.028 kg/cm² , 0.2 to 0.4 psi).
Remove EVAP service port adapter and hose with pressure pump.
Locate the leak using a leak detector. Refer to "DESCRIPTION ".