Refueling Control Valve Test (Frontier, I30, Maxima, Sentra & Xterra)

Remove fuel filler cap. Blow air into hose "B". See Fig 1, Fig 2 or Fig 3 . Air should flow freely into fuel tank. Blow air into hose "A". Air should not flow. Using a hand pressure pump with a vacuum "T", apply 2.9 psi (20 kPa) of pressure to hoses "A" and "B". Air should not escape. If operation is not as specified, replace fuel tank with refueling control valve. If operation is as specified, refueling control valve is okay.

Fig 1: Testing Refueling Control Valve (Frontier & Xterra)

Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Identifying EVAP & ORVR Hoses At Fuel Tank (I30 & Maxima)

Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 3: Testing Refueling Control Valve & EVAP Vapor Cut Valve (Sentra)

Courtesy of NISSAN MOTOR CO., U.S.A.