2008 INFINITI FX35 Service Manual

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Page 2169 of 3924

INFINITI FX35 2008 Service Manual
DTC P0442 EVAP CONTROL SYSTEMEC-929
< SERVICE INFORMATION > [VK45DE]
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4. Using EVAP leak detector, locate the EVAP leak. For the leak
detector, refer to the instruction

Page 2170 of 3924

INFINITI FX35 2008 Service Manual
EC-930
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DTC P0442 EVAP CONTROL SYSTEM
2. Does water drain from the EVAP canister?
Ye s o r N o
Yes >> GO TO 10.
No (With CONSULT-III)>>GO TO 12.
No (Without CONSULT-I

Page 2171 of 3924

INFINITI FX35 2008 Service Manual
DTC P0442 EVAP CONTROL SYSTEMEC-931
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15.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
Refer to EC-945, "
Component Inspectio

Page 2172 of 3924

INFINITI FX35 2008 Service Manual
EC-932
< SERVICE INFORMATION >[VK45DE]
DTC P0442 EVAP CONTROL SYSTEM
24.CHECK INTERMITTENT INCIDENT
Refer to EC-717
.
>> INSPECTION END
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Page 2173 of 3924

INFINITI FX35 2008 Service Manual
DTC P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
EC-933
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DTC P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VA LV E
Descr

DTC P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
EC-933
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DTC P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VA LV E
DescriptionINFOID:0000000001326766
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/O FF operation according to the signal sent from the
ECM. The opening of the valve varies for optimum engi ne control. The optimum value stored in the ECM is
determined by considering various engine conditions. When t he 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-III Reference Value in Data Monitor ModeINFOID:0000000001326767
Specification data are reference values.
Sensor Input signal to ECM ECM function Actuator
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 sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
A/F sensor 1Density of oxygen in exhaust gas
(Mixture ratio feedback signal)
Fuel tank temperature sensor Fuel temperature in fuel tank
Wheel sensor Vehicle speed*
2
SEF337U
MONITOR ITEM CONDITION SPECIFICATION
PURG VOL C/V Engine: After warming up
Selector lever: P or N
Air conditioner switch: OFF
No load Idle 0%
2,000 rpm —
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Page 2174 of 3924

INFINITI FX35 2008 Service Manual
EC-934
< SERVICE INFORMATION >[VK45DE]
DTC P0443 EVAP CANISTER PURGE VO
LUME CONTROL SOLENOID VALVE
On Board Diagn osis Logic
INFOID:0000000001326768
DTC Confirmation ProcedureINFOID:0000000001326769

EC-934
< SERVICE INFORMATION >[VK45DE]
DTC P0443 EVAP CANISTER PURGE VO
LUME CONTROL SOLENOID VALVE
On Board Diagn osis Logic
INFOID:0000000001326768
DTC Confirmation ProcedureINFOID:0000000001326769
NOTE:
If DTC Confirmation Procedure has been previously conduc ted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Always perform test at a temperature of 5 °C (41 °F) or more.
WITH CONSULT-III
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON.
4. Select “PURG VOL CN/V P1444” of “EVAPORATIVE SYSTEM” in “DTC WORK SUPPORT” mode with
CONSULT-III.
5. Touch “START”.
6. Start engine and let it idle until “TESTING” on CO NSULT-III changes to “COMPLETED”. (It will take
approximately 10 seconds.)
If “TESTING” is not displayed afte r 5 minutes, retry from step 2.
7. Make sure that “OK” is displayed after touching “ SELF-DIAG RESULTS”. If “NG” is displayed, refer to EC-
936, "Diagnosis Procedure".
WITH GST
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Start engine and let it idle for at least 20 seconds.
4. Select “Service $07” with GST.
5. If 1st trip DTC is detected, go to EC-936, "
Diagnosis Procedure".
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0443
0443 EVAP canister purge
volume control solenoid
valve The canister purge flow is detected during the
specified driving conditions, even when EVAP
canister purge volume control solenoid valve is
completely closed. EVAP control system pressure sensor
EVAP canister purge volume control so-
lenoid valve
(The valve is stuck open.)
EVAP canister vent control valve
EVAP canister
Hoses (Hoses are connected incorrectly or
clogged.)
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Page 2175 of 3924

INFINITI FX35 2008 Service Manual
DTC P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
EC-935
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Wiring DiagramINFOID:0000000001326770
Specification data are refere

Page 2176 of 3924

INFINITI FX35 2008 Service Manual
EC-936
< SERVICE INFORMATION >[VK45DE]
DTC P0443 EVAP CANISTER PURGE VO
LUME CONTROL SOLENOID VALVE
Do not use ECM ground terminals when measuring in put/output voltage. Doing so may result in dam-
a

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