2001 INFINITI QX4 Factory Service Manual

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Page 1065 of 2395

INFINITI QX4 2001 Factory Service Manual 4 CHECK FUEL TANK VACUUM RELIEF VALVE 1. Wipe clean valve housing. 2. Check valve opening pressure and vacuum. SEF427N SEF943S Pressure: 15.3 - 20.0 kPa (0.156 - 0.204 kg/cm2, 2.22 - 2.90 psi) Vacuum:

Page 1066 of 2395

INFINITI QX4 2001 Factory Service Manual 5 INSTALL THE PRESSURE PUMP To locate the EVAP leak, install EVAP service port adapter and pressure pump to EVAP service port securely. SEF983Y SEF916U NOTE: Improper installation of the EVAP service

Page 1067 of 2395

INFINITI QX4 2001 Factory Service Manual 6 CHECK FOR EVAP LEAK With CONSULT-II 1. Turn ignition switch ªONº. 2. Select ªEVAP SYSTEM CLOSEº of ªWORK SUPPORTº mode with CONSULT-II. 3. Touch ªSTARTº and apply pressure into the EVAP line

Page 1068 of 2395

INFINITI QX4 2001 Factory Service Manual 7 CHECK FOR EVAP LEAK Without CONSULT-II 1. Turn ignition switch ªOFFº. 2. Apply 12 volts DC to EVAP canister vent control valve. The valve will close. (Continue to apply 12 volts until the end of t

Page 1069 of 2395

INFINITI QX4 2001 Factory Service Manual 8 CHECK WATER SEPARATOR 1. Check visually for insect nests in the water separator air inlet. 2. Check visually for cracks or flaws in the appearance. 3. Check visually for cracks or flaws in the hose.

Page 1070 of 2395

INFINITI QX4 2001 Factory Service Manual 11 CHECK EVAP CANISTER Weigh the EVAP canister with the EVAP canister vent control valve attached. The weight should be less than 1.8 kg (4.0 lb). OK or NG OK (With CONSULT-II)©GO TO 13. OK (Without

Page 1071 of 2395

INFINITI QX4 2001 Factory Service Manual 15 CHECK VACUUM HOSE Check vacuum hoses for clogging or disconnection. Refer to ªVacuum Hose Drawingº, EC-26. OK or NG OK (With CONSULT-II)©GO TO 16. OK (Without CONSULT- II)©GO TO 17. NG©Repair

Page 1072 of 2395

INFINITI QX4 2001 Factory Service Manual 17 CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE With CONSULT-II Check air passage continuity of EVAP canister purge volume control solenoid valve under the following conditions. SEF986Y SEF
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