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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 43 (Engine Controls - System & Component Testing - 4 CYL & V6) >> Emission Systems & Sub-Systems >> Evaporative Emissions Control System >> EVAP System Leak Test

EVAP System Leak Test

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2002 Nissan Xterra, 2002 Nissan Sentra, 2002 Nissan Quest, 2002 Nissan Pathfinder, and 2002 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: DO NOT apply more than.6 psi (.04 kg/cm2 ) of pressure to EVAP system. DO NOT use compressed air.
NOTE: DO NOT start engine during testing procedure.

  1. Using CONSULT-II

    Attach EVAP service port adapter securely to EVAP service port. Attach pressure pump and hose. Turn ignition on. Using CONSULT-II in WORK SUPPORT MODE select EVAP SYSTEM CLOSE. Touch START. A bar graph should appear, using pressure pump apply pressure until pressure indicator reaches middle of graph. Remove EVAP service port adapter along with pump. Locate leak using Leak Detector (J41416).

  2. Without CONSULT-II

    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 7 . Apply.2-.4 psi (.01-.03 kg/cm2 ) 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 (Altima)
G99J50459Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 2: Testing EVAP System For Leaks (Frontier 2.4L & Xterra 2.4L)
G99D50461Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 3: Testing EVAP System For Leaks (Frontier 3.3L & Xterra 3.3L)
G00015125Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 4: Testing EVAP System For Leaks (I35 & Maxima)
G00015123Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 5: Testing EVAP System For Leaks (Pathfinder & QX4)
G00051952Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 6: Testing EVAP System For Leaks (Quest)
G99F50463Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 7: Testing EVAP System For Leaks (Sentra)
G00015124Courtesy of NISSAN MOTOR CO., U.S.A.
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