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![INFINITI FX35 2005 Service Manual EC-1056
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DTC P0441 EVAP CONTROL SYSTEM
Revision: 2005 July 2005 FX
DTC P0441 EVAP CONTROL SYSTEMPFP:14950
System DescriptionABS007NQ
NOTE:
If DTC P0441 is displayed with other DTC such as P21 INFINITI FX35 2005 Service Manual EC-1056
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DTC P0441 EVAP CONTROL SYSTEM
Revision: 2005 July 2005 FX
DTC P0441 EVAP CONTROL SYSTEMPFP:14950
System DescriptionABS007NQ
NOTE:
If DTC P0441 is displayed with other DTC such as P21](/manual-img/42/57020/w960_57020-2448.png)
EC-1056
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DTC P0441 EVAP CONTROL SYSTEM
Revision: 2005 July 2005 FX
DTC P0441 EVAP CONTROL SYSTEMPFP:14950
System DescriptionABS007NQ
NOTE:
If DTC P0441 is displayed with other DTC such as P2122, P2123, P2127, P2128 or P2138, first perform
trouble diagnosis for other DTC.
In this evaporative emission (EVAP) control system, purge flow occurs during non-closed throttle conditions.
Purge volume is related to air intake volume. Under normal purge conditions (non-closed throttle), the EVAP
canister purge volume control solenoid valve is open to admit purge flow. Purge flow exposes the EVAP con-
trol system pressure sensor to intake manifold vacuum.
On Board Diagnosis LogicABS007NR
Under normal conditions (non-closed throttle), sensor output voltage indicates if pressure drop and purge flow
are adequate. If not, a malfunction is determined.
DTC Confirmation ProcedureABS007NS
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If DTC Confirmation Procedure has been previously conducted, 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.
PBIB1026E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0441
0441 EVAP control system
incorrect purge flow EVAP control system does not operate prop-
erly, EVAP control system has a leak between
intake manifold and EVAP control system pres-
sure sensor.
EVAP canister purge volume control
solenoid valve stuck closed
EVAP control system pressure sensor
and the circuit
Loose, disconnected or improper con-
nection of rubber tube
Blocked rubber tube
Cracked EVAP canister
EVAP canister purge volume control
solenoid valve circuit
Accelerator pedal position sensor
Blocked purge port
EVAP canister vent control valve
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![INFINITI FX35 2005 Service Manual DTC P0441 EVAP CONTROL SYSTEM EC-1057
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WITH CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. INFINITI FX35 2005 Service Manual DTC P0441 EVAP CONTROL SYSTEM EC-1057
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WITH CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2.](/manual-img/42/57020/w960_57020-2449.png)
DTC P0441 EVAP CONTROL SYSTEM EC-1057
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WITH CONSULT-II
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-II.
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-II screen. Maintain the conditions continuously until “TESTING” 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 “SELF-DIAG RESULTS”. If “NG” is displayed, refer to EC-
1058, "Diagnostic Procedure" .
Overall Function CheckABS007NT
Use 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 confirmed.
WITH GST
1. Lift up drive wheels.
2. Start engine (VDC switch OFF) and warm it up to normal operating temperature.
3. Turn ignition switch OFF, wait at least 10 seconds.
4. Start engine and wait at least 70 seconds.
5. Set voltmeter probes to ECM terminals 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.
Selector lever Suitable position
Vehicle speed 32 - 120 km/h (20 - 75 MPH)
ENG SPEED 500 - 3,000 rpm
B/FUEL SCHDL 1.0 - 10.0 msec
Engine coolant temperature 70 - 100 °C (158 - 212 °F)
PBIB0826E
Air conditioner switch ON
Headlamp switch ON
Rear window defogger switch ON
Engine speed Approx. 3,000 rpm
Gear position Any position other than P, N or R
PBIB1109E
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![INFINITI FX35 2005 Service Manual EC-1058
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DTC P0441 EVAP CONTROL SYSTEM
Revision: 2005 July 2005 FX
9. If NG, go to EC-1058, "Diagnostic Procedure" .
Diagnostic ProcedureABS007NU
1. CHECK EVAP CANISTER
1. Turn ignition switc INFINITI FX35 2005 Service Manual EC-1058
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DTC P0441 EVAP CONTROL SYSTEM
Revision: 2005 July 2005 FX
9. If NG, go to EC-1058, "Diagnostic Procedure" .
Diagnostic ProcedureABS007NU
1. CHECK EVAP CANISTER
1. Turn ignition switc](/manual-img/42/57020/w960_57020-2450.png)
EC-1058
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DTC P0441 EVAP CONTROL SYSTEM
Revision: 2005 July 2005 FX
9. If NG, go to EC-1058, "Diagnostic Procedure" .
Diagnostic ProcedureABS007NU
1. CHECK EVAP CANISTER
1. Turn ignition switch OFF.
2. Check EVAP canister for cracks.
OK or NG
OK (With CONSULT-II)>>GO TO 2.
OK (Without CONSULT-II)>>GO TO 3.
NG >> Replace EVAP canister.
2. CHECK PURGE FLOW
With CONSULT-II
1. Disconnect vacuum hose connected to EVAP canister purge volume control solenoid valve at EVAP ser- vice port and install vacuum gauge. For the location of EVAP service port, refer to EC-731, "
EVAPORA-
TIVE EMISSION LINE DRAWING" .
2. Start engine and let it idle.
3. Select “PURG VOL CONT/V” in “ACTIVE TEST” mode with CONSULT-II.
4. Rev engine up to 2,000 rpm.
5. Touch “Qd” and “Qu” on CONSULT-II screen to adjust “PURG VOL CONT/V” opening and check vacuum existence.
OK or NG
OK >> GO TO 7.
NG >> GO TO 4.
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 valve at EVAP ser- vice port and install vacuum gauge. For the location of EVAP service port, refer to EC-731, "
EVAPORA-
TIVE EMISSION LINE DRAWING" .
4. Start engine and let it idle for at least 80 seconds.
5. Check vacuum gauge indication when revving engine up to 2,000 rpm.
6. Release the accelerator pedal fully and let idle.
OK or NG
OK >> GO TO 7.
NG >> GO TO 4.
PURG VOL CONT/V Vacuum
100% Should exist.0% Should not exist.
PBIB0147E
Vacuum should exist.
Vacuum should not exist.
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4. CHECK EVAP PURGE LINE
1. Turn ignition switch OFF.
2. Check EVAP purge line for INFINITI FX35 2005 Service Manual DTC P0441 EVAP CONTROL SYSTEM EC-1059
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4. CHECK EVAP PURGE LINE
1. Turn ignition switch OFF.
2. Check EVAP purge line for](/manual-img/42/57020/w960_57020-2451.png)
DTC P0441 EVAP CONTROL SYSTEM EC-1059
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4. CHECK EVAP PURGE LINE
1. Turn ignition switch OFF.
2. Check EVAP purge line for improper connection or disconnection. Refer to EC-731, "
EVAPORATIVE EMISSION LINE DRAWING" .
OK or NG
OK >> GO TO 5.
NG >> Repair it.
5. CHECK EVAP PURGE HOSE AND PURGE PORT
1. Disconnect purge hoses connected to EVAP service port A and
EVAP canister purge volume control solenoid valve B .
2. Blow air into each hose and EVAP purge port C .
3. Check that air flows freely.
OK or NG
OK (With CONSULT-II)>>GO TO 6.
OK (Without CONSULT-II)>>GO TO 7.
NG >> Repair or clean hoses and/or purge port.
6. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
With CONSULT-II
1. Start engine.
2. Perform “PURG VOL CONT/V” in “ACTIVE TEST” mode with CONSULT-II. Check that engine speed varies according to the
valve opening.
OK or NG
OK >> GO TO 8.
NG >> GO TO 7.
7. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
Refer to EC-1074, "
Component Inspection" .
OK or NG
OK >> GO TO 8.
NG >> Replace EVAP canister purge volume control solenoid valve.
SEF367U
SEF368U
PBIB0147E
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![INFINITI FX35 2005 Service Manual EC-1060
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DTC P0441 EVAP CONTROL SYSTEM
Revision: 2005 July 2005 FX
8. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR
1. Disconnect EVAP control system pressure sensor harness connector. INFINITI FX35 2005 Service Manual EC-1060
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DTC P0441 EVAP CONTROL SYSTEM
Revision: 2005 July 2005 FX
8. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR
1. Disconnect EVAP control system pressure sensor harness connector.](/manual-img/42/57020/w960_57020-2452.png)
EC-1060
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DTC P0441 EVAP CONTROL SYSTEM
Revision: 2005 July 2005 FX
8. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR
1. Disconnect EVAP control system pressure sensor harness connector.
2. Check connectors for water.
OK or NG
OK >> GO TO 9.
NG >> Replace EVAP control system pressure sensor.
9. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR FUNCTION
Refer to DTC P0452 EC-1087, "
DTC Confirmation Procedure" , P0453 EC-1093, "DTC Confirmation Proce-
dure" .
OK or NG
OK >> GO TO 10.
NG >> Replace EVAP control system pressure sensor.
10. CHECK RUBBER TUBE FOR CLOGGING
1. Disconnect rubber tube connected to EVAP canister vent control valve.
2. Check the rubber tube for clogging.
OK or NG
OK >> GO TO 11.
NG >> Clean the rubber tube using an air blower.
11 . CHECK EVAP CANISTER VENT CONTROL VALVE
Refer to EC-1081, "
Component Inspection" .
OK or NG
OK >> GO TO 12.
NG >> Replace EVAP canister vent control valve.
12. CHECK EVAP PURGE LINE
Inspect EVAP purge line (pipe and rubber tube). Check for evidence of leaks.
Refer to EC-731, "
EVAPORATIVE EMISSION LINE DRAWING" .
OK or NG
OK >> GO TO 13.
NG >> Replace it.
13. CLEAN EVAP PURGE LINE
Clean EVAP purge line (pipe and rubber tube) using air blower.
>> GO TO 14.
14. CHECK INTERMITTENT INCIDENT
Refer to EC-854, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>> INSPECTION END
Water should not exist.
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![INFINITI FX35 2005 Service Manual DTC P0442 EVAP CONTROL SYSTEM EC-1061
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DTC P0442 EVAP CONTROL SYSTEMPFP:14950
On Board Diagnosis LogicABS007NV
This diagnosi INFINITI FX35 2005 Service Manual DTC P0442 EVAP CONTROL SYSTEM EC-1061
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On Board Diagnosis LogicABS007NV
This diagnosi](/manual-img/42/57020/w960_57020-2453.png)
DTC P0442 EVAP CONTROL SYSTEM EC-1061
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DTC P0442 EVAP CONTROL SYSTEMPFP:14950
On Board Diagnosis LogicABS007NV
This diagnosis detects leaks in the EVAP purge line using engine intake manifold vacuum.
If pressure does not increase, the ECM will check for leaks 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 shut 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.
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
control 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
PBIB1026E
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![INFINITI FX35 2005 Service Manual EC-1062
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DTC P0442 EVAP CONTROL SYSTEM
Revision: 2005 July 2005 FX
CAUTION:
Use only a genuine NISSAN fuel filler cap as a replacement. If an incorrect fuel filler cap is used,
the MIL may c INFINITI FX35 2005 Service Manual EC-1062
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DTC P0442 EVAP CONTROL SYSTEM
Revision: 2005 July 2005 FX
CAUTION:
Use only a genuine NISSAN fuel filler cap as a replacement. If an incorrect fuel filler cap is used,
the MIL may c](/manual-img/42/57020/w960_57020-2454.png)
EC-1062
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DTC P0442 EVAP CONTROL SYSTEM
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CAUTION:
Use only a genuine NISSAN fuel filler cap as a replacement. If an incorrect fuel filler cap is used,
the MIL may come on.
If the fuel filler cap is not tightened properly, the MIL may come on.
Use only a genuine NISSAN rubber tube as a replacement.
DTC Confirmation ProcedureABS007NW
NOTE:
If DTC Confirmation Procedure has been previously conducted, 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-II
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-II.
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 “EVAPORATIVE SYSTEM” in “DTC WORK SUPPORT” mode with CONSULT-II.
Follow the instruction displayed.
NOTE:
If the engine speed cannot be maintained within the range displayed on the CONSULT-II screen, go to
EC-769, "
Basic Inspection" .
6. Make sure that “OK” is displayed. If “NG” is displayed, refer to EC-1063, "
Diagnostic Procedure" .
NOTE:
Make sure that EVAP hoses are connected to EVAP canister
purge volume control solenoid valve properly.
PBIB0829E
SEC763C
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WITH GST
NOTE:
Be sure to read the explanation of EC-756, "
Driving Pattern" bef INFINITI FX35 2005 Service Manual DTC P0442 EVAP CONTROL SYSTEM EC-1063
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WITH GST
NOTE:
Be sure to read the explanation of EC-756, "
Driving Pattern" bef](/manual-img/42/57020/w960_57020-2455.png)
DTC P0442 EVAP CONTROL SYSTEM EC-1063
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WITH GST
NOTE:
Be sure to read the explanation of EC-756, "
Driving Pattern" before driving vehicle.
1. Start engine.
2. Drive vehicle according to EC-756, "
Driving Pattern" .
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-1063, "Diagnostic Procedure" .
If P0441 is displayed on the screen, go to EC-1058, "Diagnostic Procedure" .
Diagnostic ProcedureABS007NX
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 properly 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.
3. CHECK FUEL FILLER CAP FUNCTION
Check for air releasing sound while opening the fuel filler cap.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4. CHECK FUEL TANK VACUUM RELIEF VALVE
Refer to EC-733, "
FUEL TANK VACUUM RELIEF VALVE (BUILT INTO FUEL FULLER CAP)" .
OK or NG
OK >> GO TO 5.
NG >> Replace fuel filler cap with a genuine one.
SEF915U