2006 INFINITI QX56 Factory Service Manual

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Page 1585 of 3383

INFINITI QX56 2006 Factory Service Manual EC-374Revision: November 2009
DTC P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
2006 QX56
On Board Diagnosis LogicUBS00HAV
DTC Confirmation ProcedureUBS00HAW
NOTE:
If DTC Confirmation Proced

Page 1586 of 3383

INFINITI QX56 2006 Factory Service Manual DTC P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVEEC-375
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Revision: November 2009 2006 QX56
Wiring DiagramUBS00HAX
BBWA1687E

Page 1587 of 3383

INFINITI QX56 2006 Factory Service Manual EC-376Revision: November 2009
DTC P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
2006 QX56
Specification data are reference values and are measured between each terminal and ground.
Pulse sig

Page 1588 of 3383

INFINITI QX56 2006 Factory Service Manual DTC P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVEEC-377
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Revision: November 2009 2006 QX56
Diagnostic ProcedureUBS00HAY
1. CHECK EVAP CANISTER PURGE VOLUME CONTROL S

Page 1589 of 3383

INFINITI QX56 2006 Factory Service Manual EC-378Revision: November 2009
DTC P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
2006 QX56
4. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR
1. Disconnect EVAP control system pressure se

Page 1590 of 3383

INFINITI QX56 2006 Factory Service Manual DTC P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVEEC-379
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Revision: November 2009 2006 QX56
10. CHECK IF EVAP CANISTER SATURATED WITH WATER
1. Remove EVAP canister wi

Page 1591 of 3383

INFINITI QX56 2006 Factory Service Manual EC-380Revision: November 2009
DTC P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
2006 QX56
Component InspectionUBS00HAZ
EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE With CONSULT-II
Chec

Page 1592 of 3383

INFINITI QX56 2006 Factory Service Manual DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
EC-381
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Revision: November 2009 2006 QX56
DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VA L

DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
EC-381
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Revision: November 2009 2006 QX56
DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VA LV E
PFP:14920
DescriptionUBS00H4R
SYSTEM DESCRIPTION
*1: ECM determines the start signal status by the signals of engine speed and battery voltage.
*2: This signal is sent to the ECM through CAN communication line.
This system controls flow rate of fuel vapor from the EVAP canister. The opening of the vapor by-pass pas-
sage in the EVAP canister purge volume control solenoid valve changes to control the flow rate. The EVAP
canister purge volume control solenoid valve repeats ON/OFF operation according to the signal sent from the
ECM. The opening of the valve varies for optimum engine control. The optimum value stored in the ECM is
determined by considering various engine conditions. When the engine is operating, the flow rate of fuel vapor
from the EVAP canister is regulated as the air flow changes.
COMPONENT DESCRIPTION
The EVAP canister purge volume control solenoid valve uses a ON/
OFF duty to control the flow rate of fuel vapor from the EVAP canis-
ter. The EVAP canister purge volume control solenoid valve is
moved by ON/OFF pulses from the ECM. The longer the ON pulse,
the greater the amount of fuel vapor that will flow through the valve.
CONSULT-II Reference Value in Data Monitor ModeUBS00H4S
Specification data are reference values.
SensorInput signal to ECMECM functionActuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE) Engine speed*
1
EVAP canister
purge flow controlEVAP canister purge vol-
ume control solenoid valve
Mass air flow sensor
Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Battery Battery voltage*
1
Throttle position sensorThrottle position
Accelerator pedal position sensor Accelerator pedal position
Air fuel ratio (A/F) sensor 1 Density of oxygen in exhaust gas
(Mixture ratio feedback signal)
Fuel tank temperature sensor Fuel temperature in fuel tank
Wheel sensor Vehicle speed*
2
PBIB2057E
MONITOR ITEM CONDITION SPECIFICATION
PURG VOL C/V
Engine: After warming up
Air conditioner switch: OFF
Selector lever: P or N
No load Idle
(Accelerator pedal: Not depressed
even slightly, after starting engine)
0%
2,000 rpm —

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