Without Consult

To locate the EVAP leakage, install EVAP service port adapter (commercial service tool) 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 leakage, 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) and hose with pressure pump.

Fig 1: Attaching Pressure Pump To EVAP Service Port
Courtesy of NISSAN NORTH AMERICA, INC.
Locate the leakage using a leak detector (commercial service tool). Refer to "EVAPORATIVE EMISSION SYSTEM: SYSTEM DESCRIPTION ".

Fig 2: Identifying Leak Detector
Courtesy of NISSAN NORTH AMERICA, INC.