2001 INFINITI QX4 Factory Service Manual

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Page 1081 of 2395

INFINITI QX4 2001 Factory Service Manual 4 CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR HOSE Check disconnection or improper connection of hose connected to EVAP control system pressure sensor. SEF495R OK or NG OK©GO TO 5. NG©Repair it. 5 CHE

Page 1082 of 2395

INFINITI QX4 2001 Factory Service Manual 6 CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR 1. Remove EVAP control system pressure sensor with its harness connector connected. CAUTION: INever apply force to the air hole protector of the sensor if e

Page 1083 of 2395

INFINITI QX4 2001 Factory Service Manual 7 CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE With CONSULT-II 1. Turn ignition switch ªOFFº. 2. Reconnect harness connectors disconnected. 3. Start engine. 4. Perform ªPURG VOL CONT/Vº

Page 1084 of 2395

INFINITI QX4 2001 Factory Service Manual 9 CHECK RUBBER TUBE FOR CLOGGING 1. Disconnect rubber tube connected to EVAP canister vent control valve. 2. Check the rubber tube for clogging. OK or NG OK©GO TO 10. NG©Clean the rubber tube using

Page 1085 of 2395

INFINITI QX4 2001 Factory Service Manual 11 CHECK EVAP CANISTER VENT CONTROL VALVE-II With CONSULT-II 1. Reconnect harness connectors disconnected. 2. Turn ignition switch ªONº. 3. Perform ªVENT CONTROL/Vº in ªACTIVE TESTº mode. 4. Che

Page 1086 of 2395

INFINITI QX4 2001 Factory Service Manual 13 CHECK IF EVAP CANISTER SATURATED WITH WATER 1. Remove EVAP canister with EVAP canister vent control valve attached. 2. Check if water will drain from the EVAP canister. SEF596U YesorNo Ye s©GO TO

Page 1087 of 2395

INFINITI QX4 2001 Factory Service Manual 16 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 1088 of 2395

INFINITI QX4 2001 Factory Service Manual SEF032W SEF143S Component DescriptionNBEC0326The EVAP canister vent control valve is located on the EVAP can- ister and is used to seal the canister vent. This solenoid valve responds to signals from
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