2008 INFINITI FX35 Service Manual

boot park assist door lock engine coolant fuel fill door release water pump

Page 1577 of 3924

INFINITI FX35 2008 Service Manual
DTC P0441 EVAP CONTROL SYSTEMEC-337
< SERVICE INFORMATION > [VQ35DE]
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1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wa

DTC P0441 EVAP CONTROL SYSTEMEC-337
< SERVICE INFORMATION > [VQ35DE]
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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 70 seconds.
4. Select “PURG FLOW P0441” of “EVAPORATIVE
SYSTEM” in “DTC CONFIRMATION” mode with CON-
SULT-III.
5. Touch “START”.
If “COMPLETED” is displayed, go to step 7.
6. When the following conditions are met, “TESTING ” will be displayed on the CONSULT-III screen. Maintain
the conditions continuously until “TES TING” changes to “COMPLETED”. (It will take at least 35 seconds.)
If “TESTING” is not changed for a long time, retry from step 2.
7. Make sure that “OK” is displayed after touching “S ELF-DIAG RESULTS”. If “NG” is displayed, refer to EC-
337, "Diagnosis Procedure".
Overall Function CheckINFOID:0000000001326164
Use this procedure to check the overall monitoring func tion of the EVAP control system purge flow monitoring.
During this check, a 1st trip DTC might not be confirmed.
WITH GST
1. Lift up drive wheels.
2. Start engine (TCS switch or VDC switch OFF) and warm it up to normal operating temperature.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Start engine and wait at least 70 seconds.
5. Set voltmeter probes to ECM te rminals 32 (EVAP control system
pressure sensor signal) and ground.
6. Check EVAP control system pressure sensor value at idle speed and note it.
7. Establish and maintain the following conditions for at least 1
minute.
8. Verify that EVAP control system pressure sensor value stays 0.1V less than the value at idle speed (mea-
sured at step 6) for at least 1 second.
9. If NG, go to EC-337, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000001326165
1.CHECK EVAP CANISTER
1. Turn ignition switch OFF.
2. Check EVAP canister for cracks.
OK or NG
OK (With CONSULT-III)>>GO TO 2.
OK (Without CONSULT-III)>>GO TO 3.
NG >> Replace EVAP canister.
2.CHECK PURGE FLOW
Selector lever Suitable position
VHCL SPEED SE 32 - 120 km/h (20 - 75 MPH)
ENG SPEED 500 - 3,000 rpm
B/FUEL SCHDL 1.3 - 9.0 msec
COOLAN TEMP/S 70 - 100 °C (158 - 212 °F)
Air conditioner switch ON
Headlamp switch ON
Rear window defogger switch ON
Engine speed Approx. 3,000 rpm
Selector lever Any position other than P, N or R
PBIB1109E
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Page 1578 of 3924

INFINITI FX35 2008 Service Manual
EC-338
< SERVICE INFORMATION >[VQ35DE]
DTC P0441 EVAP CONTROL SYSTEM

With CONSULT-III
1. Disconnect vacuum hose connected to EVAP canister purge volume control solenoid valve at EVAP ser-
vice por

Page 1579 of 3924

INFINITI FX35 2008 Service Manual
DTC P0441 EVAP CONTROL SYSTEMEC-339
< SERVICE INFORMATION > [VQ35DE]
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3. Check that air flows freely.
OK or NG
OK (With CONSULT-III)>>GO TO 6.
OK (Without CONSULT-III)>

Page 1580 of 3924

INFINITI FX35 2008 Service Manual
EC-340
< SERVICE INFORMATION >[VQ35DE]
DTC P0441 EVAP CONTROL SYSTEM
Inspect EVAP purge line (pipe and rubber tube). Check for evidence of leaks.
Refer to
EC-40, "
Description".
OK or NG
OK >> GO TO

Page 1581 of 3924

INFINITI FX35 2008 Service Manual
DTC P0442 EVAP CONTROL SYSTEMEC-341
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DTC P0442 EVAP CONTROL SYSTEM
On Board Diagnosis LogicINFOID:0000000001326166
This diagnosis detec

DTC P0442 EVAP CONTROL SYSTEMEC-341
< SERVICE INFORMATION > [VQ35DE]
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DTC P0442 EVAP CONTROL SYSTEM
On Board Diagnosis LogicINFOID:0000000001326166
This diagnosis detects leaks in the EVAP purge line using engine intake manifold vacuum.
If pressure does not increase, the ECM will check for l
eaks in the line between the fuel tank and EVAP canister
purge volume control solenoid valve, under the following Vacuum test conditions.
The EVAP canister vent control valve is closed to s hut the EVAP purge line off. The EVAP canister purge vol-
ume control solenoid valve will then be opened to depressurize the EVAP purge line using intake manifold
vacuum. After this occurs, the EVAP canister purge volume control solenoid valve will be closed.
CAUTION:
Use only a genuine NISSAN fuel filler cap as a replacemen t. If an incorrect fuel filler cap is used, the
MIL may come on.
If the fuel filler cap is not tigh tened properly, the MIL may come on.
Use only a genuine NISSAN rubber tube as a replacement.
DTC Confirmation ProcedureINFOID:0000000001326167
NOTE:
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0442
0442 EVAP control system
small leak detected
(negative pressure) EVAP control system has a leak, EVAP
control system does not operate prop-
erly. Incorrect fuel tank vacuum relief valve
Incorrect fuel filler cap used
Fuel filler cap remains open or fails to close.
Foreign matter caught in fuel filler cap.
Leak is in line between intake manifold and EVAP
canister purge volume control solenoid valve.
Foreign matter caught in EVAP canister vent con- trol valve.
EVAP canister or fuel tank leaks
EVAP purge line (pipe and rubber tube) leaks
EVAP purge line rubber tube bent
Loose or disconnected rubber tube
EVAP canister vent control valve and the circuit
EVAP canister purge volume control solenoid valve and the circuit
Fuel tank temperature sensor
O-ring of EVAP canister vent control valve is missing or damaged
EVAP canister is saturated with water
EVAP control system pressure sensor
Fuel level sensor and the circuit
Refueling EVAP vapor cut valve
ORVR system leaks
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Page 1582 of 3924

INFINITI FX35 2008 Service Manual
EC-342
< SERVICE INFORMATION >[VQ35DE]
DTC P0442 EVAP CONTROL SYSTEM
If DTC Confirmation Procedure has been previously conduc
ted, always turn ignition switch OFF and wait at
least 10 seconds befor

EC-342
< SERVICE INFORMATION >[VQ35DE]
DTC P0442 EVAP CONTROL SYSTEM
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:
Perform “DTC WORK SUPPORT” when the fuel level is between 1/4 and 3/4 full, and vehicle is placed
on flat level surface.
Always perform test at a temperature of 0 to 30 °C (32 to 86 °F).
WITH CONSULT-III
1. Turn ignition switch ON.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-III.
4. Make sure that the following conditions are met.
COOLAN TEMP/S: 0 - 70 °C (32 - 158 °F)
INT/A TEMP SE: 0 - 30 °C (32 - 86 °F)
5. Select “EVAP SML LEAK P0442/P1442” of “EV APORATIVE SYSTEM” in “DTC WORK SUPPORT” mode
with CONSULT-III.
Follow the instruction displayed.
NOTE:
If the engine speed cannot be maintained within t he range displayed on the CONSULT-III screen, go to
EC-80, "
Basic Inspection".
6. Make sure that “OK” is displayed. If “NG” is displayed, refer to EC-342, "
Diagnosis Procedure".
NOTE:
Make sure that EVAP hoses are connected to EVAP canister purge volume control solenoid valve
properly.
WITH GST
NOTE:
Be sure to read the explanation of EC-55, "
Emission-Related Diagnostic Information" before driving vehicle.
1. Start engine.
2. Drive vehicle according to EC-55, "
Emission-Related Diagnostic Information".
3. Stop vehicle.
4. Turn ignition switch OFF, wait at least 10 seconds, and then turn ON.
5. Select Service $07 with GST.
- If P0442 is displayed on the screen, go to EC-342, "
Diagnosis Procedure".
- If P0441 is displayed on the screen, go to EC-337, "
Diagnosis Procedure" for DTC P0441.
Diagnosis ProcedureINFOID:0000000001326168
1.CHECK FUEL FILLER CAP DESIGN
1. Turn ignition switch OFF.
2. Check for genuine NISSAN fuel filler cap design.
OK or NG
OK >> GO TO 2.
NG >> Replace with genuine NISSAN fuel filler cap.
2.CHECK FUEL FILLER CAP INSTALLATION
Check that the cap is tightened proper ly by rotating the cap clockwise.
OK or NG
OK >> GO TO 3.
NG >> 1. Open fuel filler cap, then clean cap and fuel filler neck threads using air blower.
2. Retighten until ratcheting sound is heard.
SEF915U
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Page 1583 of 3924

INFINITI FX35 2008 Service Manual
DTC P0442 EVAP CONTROL SYSTEMEC-343
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3.CHECK FUEL FILLER CAP FUNCTION
Check for air releasing sound while opening the fuel filler cap.

Page 1584 of 3924

INFINITI FX35 2008 Service Manual
EC-344
< SERVICE INFORMATION >[VQ35DE]
DTC P0442 EVAP CONTROL SYSTEM
4. Using EVAP leak detector, locate the EVAP leak. For the leak
detector, refer to the instruction manual for more details.
Refer

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