EVAP System Leak Test

CAUTION: DO NOT apply more than.6 psi (4.12 kPa) of pressure to EVAP system. DO NOT use compressed air.

NOTE: DO NOT start engine.

Connect suitable pressure pump with gauge to EVAP service port. See VACUUM DIAGRAMS article for location. Using jumper wires, apply battery voltage to EVAP Canister Vent Control Valve (EVAP-CVCV) and Vacuum cut valve by-pass valve. See Fig 1, Fig 2, or Fig 3 . Apply.2-.4 psi (1.38-2.76 kPa) of pressure to EVAP service port. Remove pressure pump from EVAP service port. Using Leak Detector (J41416), locate EVAP system leak.

Fig 1: Testing EVAP System For Leaks(G20)

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

Fig 2: Testing EVAP System For Leaks(I30)

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

Fig 3: Testing EVAP System For Leaks(Q45)

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