Nissan Pathfinder (2011 year). Instruction — part 272

EM-47, "Removal and Installation"

Keep fuel hose and all fuel injectors connected to fuel tube.

3. Reconnect all fuel injector harness connectors.

4. Disconnect all ignition coil harness connectors.

5. Turn ignition switch ON.

Check that fuel does not drip from fuel injector.

OK or NG

OK (Does not drip.)>>GO TO 11.

NG (Drips.)>>Replace the fuel injector(s) from which fuel is dripping. Refer to

EM-47, "Removal and Installa-

tion"

11.

CHECK INTERMITTENT INCIDENT

Spark should be generated.

SEF156I

Spark should be generated.

2011 Pathfinder

P0420, P0430 THREE WAY CATALYST FUNCTION

EC-231

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE]

GI-37, "Intermittent Incident"

Trouble is fixed.>>

INSPECTION END

Trouble is not fixed.>>Replace three way catalyst (manifold). Refer to

EM-33, "Removal and Installation

(Exhaust Manifold)"

2011 Pathfinder

EC-232

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE]

P0441 EVAP CONTROL SYSTEM

P0441 EVAP CONTROL SYSTEM

System Description

INFOID:0000000006243926

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 Logic

INFOID:0000000006243927

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 Procedure

INFOID:0000000006243928

CAUTION:

Always drive vehicle at a safe speed.

NOTE:

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next step.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

PBIB3640E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0441
0441

EVAP control system in-
correct purge flow

EVAP control system does not operate proper-
ly, EVAP control system has a leak between in-
take manifold and EVAP control system
pressure sensor.

• EVAP canister purge volume control so-

lenoid 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 so-

lenoid valve circuit

• Accelerator pedal position sensor
• Blocked purge port
• EVAP canister vent control valve
• Drain filter

2011 Pathfinder

P0441 EVAP CONTROL SYSTEM

EC-233

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE]

3. Turn ignition switch OFF and wait at least 10 seconds.

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. Turn ignition switch OFF and wait at least 10 seconds.

5. Start engine and let it idle for at least 70 seconds.

6. Select “PURG FLOW P0441” of “EVAPORATIVE SYSTEM” in “DTC CONFIRMATION” mode with CON-

SULT-III.

7. Touch “START”.

If “COMPLETED” is displayed, go to step 7.

8. When the following conditions are met, “TESTING” will be displayed on the CONSULT-III screen. Maintain

the conditions continuously until “TESTING” changes to “COMPLETED”. (It will take at least 35 seconds.)

If “TESTING” does not change for a long time, retry from step 2.

9. Make sure that “OK” is displayed after touching “SELF-DIAG RESULTS”. If “NG” is displayed, refer to

EC-

233, "Diagnosis Procedure"

Overall Function Check

INFOID:0000000006243929

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 (TCS switch or VDC switch OFF) and warm it up to normal operating temperature.

3. Turn ignition switch OFF, wait at least 10 seconds.

4. Turn ignition switch ON.

5. Turn ignition switch OFF, wait at least 10 seconds.

6. Start engine and wait at least 70 seconds.

7. Set voltmeter probes to ECM terminals 32 (EVAP control system

pressure sensor signal) and ground.

8. Check EVAP control system pressure sensor value at idle speed

and note it.

9. Establish and maintain the following conditions for at least 1

minute.

10. 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.

11. If NG, go to

EC-233, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000006243930

CHECK EVAP CANISTER

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

More than 0

C (32

Air conditioner switch

Headlamp switch

Rear window defogger switch

Engine speed

Approx. 3,000 rpm

Gear position

Any position other than P, N or R

PBIB1109E

2011 Pathfinder

EC-234

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE]

P0441 EVAP CONTROL SYSTEM

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.

>> Replace EVAP canister. Refer to

CHECK PURGE FLOW

With CONSULT-III

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

2. Start engine and let it idle.

3. Select “PURG VOL CONT/V” in “ACTIVE TEST” mode with CONSULT-III.

4. Rev engine up to 2,000 rpm.

5. Touch “Qd” and “Qu” on CONSULT-III screen to adjust “PURG VOL CONT/V” opening and check vacuum

existence.

OK or NG

>> GO TO 7.

>> GO TO 4.

CHECK PURGE FLOW

Without CONSULT-III

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

4. Start engine and let it idle.

Do not depress accelerator pedal even slightly.

5. Check vacuum gauge indication before 60 seconds pass after starting engine.

6. Rev engine up to 2,000 rpm after 100 seconds pass after starting engine.

OK or NG

>> GO TO 7.

>> GO TO 4.

CHECK EVAP PURGE LINE

1. Turn ignition switch OFF.

2. Check EVAP purge line for improper connection or disconnection.

OK or NG

>> GO TO 5.

>> Repair it.

CHECK EVAP PURGE HOSE AND PURGE PORT

PURG VOL CONT/V

Vacuum

100%

Should exist.

Should not exist.

Vacuum should not exist.

Vacuum should exist.

2011 Pathfinder

P0441 EVAP CONTROL SYSTEM

EC-235

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE]

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-III)>>GO TO 6.

OK (Without CONSULT-III)>>GO TO 7.

>> Repair or clean hoses and/or purge port.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

With CONSULT-III

1. Start engine.

2. Perform “PURG VOL CONT/V” in “ACTIVE TEST” mode with CONSULT-III. Check that engine speed var-

ies according to the valve opening.

OK or NG

>> GO TO 8.

>> GO TO 7.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

EC-252, "Component Inspection"

OK or NG

>> GO TO 8.

>> Replace EVAP canister purge volume control solenoid valve. Refer to

EM-27, "Exploded View"

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR

1. Disconnect EVAP control system pressure sensor harness connector.

2. Check connectors for water.

OK or NG

>> GO TO 9.

>> Replace EVAP control system pressure sensor. Refer to

EC-265, "DTC Confirmation Procedure"

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR FUNCTION

Refer to

for DTC P0452,

EC-269, "DTC Confirmation Procedure"

for

P0453.
OK or NG

>> GO TO 10.

>> Replace EVAP control system pressure sensor. Refer to

10.

CHECK RUBBER TUBE FOR CLOGGING

1. Disconnect rubber tube connected to EVAP canister vent control valve.

SEF367U

SEF368U

Water should not exist.

2011 Pathfinder

EC-236

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE]

P0441 EVAP CONTROL SYSTEM

2. Check the rubber tube for clogging.
OK or NG

>> GO TO 11.

>> Clean the rubber tube using an air blower.

11.

CHECK DRAIN FILTER

EC-236, "Component Inspection"

OK or NG

>> GO TO 10.

>> Replace drain filter. Refer to

12.

CHECK EVAP CANISTER VENT CONTROL VALVE

EC-255, "Component Inspection"

OK or NG

>> GO TO 13.

>> Replace EVAP canister vent control valve. Refer to

13.

CHECK EVAP PURGE LINE

Inspect EVAP purge line (pipe and rubber tube). Check for evidence of leaks.

OK or NG

>> GO TO 14.

>> Replace it.

14.

CLEAN EVAP PURGE LINE

Clean EVAP purge line (pipe and rubber tube) using air blower.

>> GO TO 15.

15.

CHECK INTERMITTENT INCIDENT

GI-37, "Intermittent Incident"

INSPECTION END

Component Inspection

INFOID:0000000006243931

DRAIN FILTER

1. Check visually for insect nests in the drain filter air inlet.
2. Check visually for cracks or flaws in the appearance.
3. Check visually for cracks or flaws in the hose.
4. Blow air into port A and check that it flows freely out of port B.
5. Block port B.
6. Blow air into port A and check that there is no leakage.
7. If NG, replace drain filter. Refer to