2001 INFINITI QX4 Factory Service Manual

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Page 1097 of 2395

INFINITI QX4 2001 Factory Service Manual IEVAP canister vent control valve SEF207Y SEF208Y SEF238Y DTC Confirmation ProcedureNBEC0335CAUTION: Always drive vehicle at a safe speed. NOTE: If ªDTC Confirmation Procedureº has been previously c

Page 1098 of 2395

INFINITI QX4 2001 Factory Service Manual SEF355X Overall Function CheckNBEC0336Use this procedure to check the overall monitoring function of the EVAP control system purge flow monitoring. During this check, a 1st trip DTC might not be confi

Page 1099 of 2395

INFINITI QX4 2001 Factory Service Manual Diagnostic Procedure=NBEC0337 1 CHECK EVAP CANISTER 1. Turn ignition switch ªOFFº. 2. Check EVAP canister for cracks. OK or NG OK (With CONSULT-II)©GO TO 2. OK (Without CONSULT- II)©GO TO 3. NG©R

Page 1100 of 2395

INFINITI QX4 2001 Factory Service Manual 3 CHECK PURGE FLOW Without CONSULT-II 1. Start engine and warm it up to normal operating temperature. 2. Stop engine. 3. Disconnect vacuum hose connected to EVAP canister purge volume control solenoid

Page 1101 of 2395

INFINITI QX4 2001 Factory Service Manual 5 CHECK EVAP PURGE HOSE AND PURGE PORT 1. Disconnect purge hoses connected to EVAP service portAand EVAP canister purge volume control solenoid valveB. SEF367U 2. Blow air into each hose and EVAP purg

Page 1102 of 2395

INFINITI QX4 2001 Factory Service Manual 7 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. SEF334X With

Page 1103 of 2395

INFINITI QX4 2001 Factory Service Manual 9 CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR 1. Disconnect EVAP control system pressure sensor harness connector. SEF495R 2. Check connectors for water. Water should not exist. OK or NG OK©G

Page 1104 of 2395

INFINITI QX4 2001 Factory Service Manual 13 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
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