2001 INFINITI QX4 Factory Service Manual

Page 905 of 2395

INFINITI QX4 2001  Factory Service Manual Wiring DiagramNBEC0226
MEC962C
DTC P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
(CIRCUIT)
Wiring Diagram
EC-370

Page 906 of 2395

INFINITI QX4 2001  Factory Service Manual Diagnostic ProcedureNBEC0227
1 CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT
1. Turn ignition switch ªOFFº.
2. Disconnect EVAP canister purge volume control solenoid v

Page 907 of 2395

INFINITI QX4 2001  Factory Service Manual 3 CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT
FOR OPEN AND SHORT
1. Turn ignition switch ªOFFº.
2. Disconnect ECM harness connector.
3. Check harness continuity bet

Page 908 of 2395

INFINITI QX4 2001  Factory Service Manual 5 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 909 of 2395

INFINITI QX4 2001  Factory Service Manual SEF032W
SEF143S
Component DescriptionNBEC0228The 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

Page 910 of 2395

INFINITI QX4 2001  Factory Service Manual Possible CauseNBEC0512IHarness or connectors
(The valve circuit is open or shorted.)
IEVAP canister vent control valve
DTC Confirmation ProcedureNBEC0232NOTE:
If ªDTC Confirmation Procedureº has bee

Page 911 of 2395

INFINITI QX4 2001  Factory Service Manual Wiring DiagramNBEC0233
MEC963C
DTC P0446 EVAPORATIVE EMISSION (EVAP) CANISTER VENT CONTROL
VALVE (CIRCUIT)
Wiring Diagram
EC-376

Page 912 of 2395

INFINITI QX4 2001  Factory Service Manual Diagnostic ProcedureNBEC0234
1 INSPECTION START
1. Do you have CONSULT-II?
YesorNo
Ye s©GO TO 2.
No©GO TO 3.
2 CHECK EVAP CANISTER VENT CONTROL VALVE CIRCUIT
With CONSULT-II
1. Turn ignition switch