Without Consult

Install EVAP service port adapter [commercial service tool: (J-41413-OBD)] and pressure pump to EVAP service port.
Apply battery voltage between the terminals of EVAP canister vent control valve to make a closed EVAP system.
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 [commercial service tool: (J-41413-OBD)] and hose with pressure pump.

Fig 1: Connecting Pressure Pump To EVAP Service Port
Courtesy of NISSAN NORTH AMERICA, INC.
Locate the leak using a leak detector [commercial service tool: (J-41416)]. Refer to "System Description ".

Fig 2: Identifying EVAP Leak Detector

Courtesy of NISSAN NORTH AMERICA, INC.