Nissan Pathfinder (2012 year). Manual - part 269

 

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Nissan Pathfinder (2012 year). Manual - part 269

 

 

P0441 EVAP CONTROL SYSTEM

EC-233

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE]

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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

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.

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 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:0000000007358148

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:0000000007358149

1.

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 

°

F)

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

August 2012

2012 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)>>GO TO 2.

OK (Without CONSULT)>>GO TO 3.

NG

>> Replace EVAP canister. Refer to 

FL-16, "Removal and Installation"

.

2.

CHECK PURGE FLOW

With CONSULT

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-57, "Description"

.

2. Start engine and let it idle.

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

4. Rev engine up to 2,000 rpm.

5. Touch “Qd” and “Qu” on CONSULT 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

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-57, "Description"

.

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

OK

>> GO TO 7.

NG

>> GO TO 4.

4.

CHECK EVAP PURGE LINE

1. Turn ignition switch OFF.

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

Refer to 

EC-57, "Description"

.

OK or NG

OK

>> GO TO 5.

NG

>> Repair it.

5.

CHECK EVAP PURGE HOSE AND PURGE PORT

PURG VOL CONT/V

Vacuum

100%

Should exist.

0%

Should not exist.

Vacuum should not exist.

Vacuum should exist.

August 2012

2012 Pathfinder

P0441 EVAP CONTROL SYSTEM

EC-235

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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)>>GO TO 6.

OK (Without CONSULT)>>GO TO 7.

NG

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

6.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

With CONSULT

1. Start engine.

2. Perform “PURG VOL CONT/V” in “ACTIVE TEST” mode with CONSULT. 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-252, "Component Inspection"

.

OK or NG

OK

>> GO TO 8.

NG

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

EM-27, "Exploded View"

.

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. Refer to 

FL-16, "Removal and Installation"

.

9.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR FUNCTION

Refer to 

EC-266, "DTC Confirmation Procedure"

 for DTC P0452, 

EC-270, "DTC Confirmation Procedure"

 for

P0453.
OK or NG

OK

>> GO TO 10.

NG

>> Replace EVAP control system pressure sensor. Refer to 

FL-16, "Removal and Installation"

.

10.

CHECK RUBBER TUBE FOR CLOGGING

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

SEF367U

SEF368U

Water should not exist.

August 2012

2012 Pathfinder

EC-236

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE]

P0441 EVAP CONTROL SYSTEM

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 DRAIN FILTER

Refer to 

EC-236, "Component Inspection"

.

OK or NG

OK

>> GO TO 10.

NG

>> Replace drain filter. Refer to 

EC-57, "Description"

.

12.

CHECK EVAP CANISTER VENT CONTROL VALVE

Refer to 

EC-255, "Component Inspection"

.

OK or NG

OK

>> GO TO 13.

NG

>> Replace EVAP canister vent control valve. Refer to 

FL-16, "Removal and Installation"

.

13.

CHECK EVAP PURGE LINE

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

Refer to 

EC-57, "Description"

.

OK or NG

OK

>> GO TO 14.

NG

>> 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

Refer to 

GI-37, "Intermittent Incident"

.

>>

INSPECTION END

Component Inspection

INFOID:0000000007358150

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 

EC-57, "Description"

.

PBIB3641E

August 2012

2012 Pathfinder

P0442 EVAP CONTROL SYSTEM

EC-237

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P0442 EVAP CONTROL SYSTEM

On Board Diagnosis Logic

INFOID:0000000007358151

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.

CAUTION:

• Use only a genuine NISSAN fuel filler cap as a replacement. If an incorrect fuel filler cap is used, the

MIL may illuminate.

• If the fuel filler cap is not tightened properly, the MIL may illuminate.

• Use only a genuine NISSAN rubber tube as a replacement.

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

• Drain filter
• 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

PBIB3640E

August 2012

2012 Pathfinder

EC-238

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE]

P0442 EVAP CONTROL SYSTEM

DTC Confirmation Procedure

INFOID:0000000007358152

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.

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

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

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.

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 “EVP V/S LEAK P0456/P1456” of “EVAPORATIVE SYSTEM” in “DTC WORK SUPPORT” mode

with CONSULT.

Follow the instructions displayed.

NOTE:

If the engine speed cannot be maintained within the range displayed on the CONSULT screen, go to 

EC-

20, "Basic Inspection"

.

6. Make sure that “OK” is displayed.

If “NG” is displayed, refer to 

EC-238, "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 Driving Pattern ON 

EC-29, "SRT Set Driving Pattern"

  before driving vehi-

cle.

1. Start engine.

2. Drive vehicle according to Driving Pattern, 

EC-71, "DIAGNOSIS DESCRIPTION : Driving Pattern"

.

3. Stop vehicle.

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

5. Turn ignition switch ON.

6. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.

7. Select Service $07 with GST.

-

If P0442 is displayed on the screen, go to 

EC-238, "Diagnosis Procedure"

.

-

If P0441 is displayed on the screen, go to 

EC-233, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000007358153

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. Refer to

FL-6, "Removal and Installation"

.

SEF915U

August 2012

2012 Pathfinder

P0442 EVAP CONTROL SYSTEM

EC-239

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE]

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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-243, "Component Inspection"

.

OK or NG

OK

>> GO TO 5.

NG

>> Replace fuel filler cap with a genuine one. Refer to 

FL-6, "Removal and Installation"

.

5.

INSTALL THE PRESSURE PUMP

To locate the EVAP leak, install EVAP service port adapter and pres-

sure pump to EVAP service port securely. For the location of EVAP

service port, refer to 

EC-57, "Description"

.

NOTE:

Improper installation of the EVAP service port adapter to the EVAP service port may cause leaking.

With CONSULT>>GO TO 6.

Without CONSULT>>GO TO 7.

6.

CHECK FOR EVAP LEAK

With CONSULT

1. Turn ignition switch ON.

2. Select “EVAP SYSTEM CLOSE” of “WORK SUPPORT” mode with CONSULT.

3. Touch “START” and apply pressure into the EVAP line until the pressure indicator reaches the middle of

the bar graph.

CAUTION:

BBIA0550E

SEF916U

August 2012

2012 Pathfinder

EC-240

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE]

P0442 EVAP CONTROL SYSTEM

• Never use compressed air or a high pressure pump.
• Never exceed 4.12 kPa (0.042 kg/cm

2

, 0.6 psi) of pressure in the system.

4. Using EVAP leak detector, locate the EVAP leak. For the leak

detector, refer to the instruction manual for more details.

Refer to 

EC-57, "Description"

.

OK or NG

OK

>> GO TO 8.

NG

>> Repair or replace.

7.

CHECK FOR EVAP LEAK

Without CONSULT

1. Turn ignition switch OFF.

2. Apply 12 volts DC to EVAP canister vent control valve (3). The

valve will close. (Continue to apply 12 volts until the end of test.)

-

Fuel filler pipe (top of frame view) (1)

-

EVAP control system pressure sensor (2)

-

EVAP canister (4)

-

Drain filter (5)

-

: Vehicle front

3. Pressurize the EVAP line using pressure pump with 1.3 to 2.7

kPa (10 to 20 mmHg, 0.39 to 0.79 inHg), then remove pump and

EVAP service port adapter.

CAUTION:

• Never use compressed air or a high pressure pump.
• Never exceed 4.12 kPa (0.042 kg/cm

2

, 0.6 psi) of pressure in the system.

4. Using EVAP leak detector, locate the EVAP leak. For the leak

detector, refer to the instruction manual for more details. Refer

to 

EC-57, "Description"

.

OK or NG

OK

>> GO TO 8.

NG

>> Repair or replace.

8.

CHECK DRAIN FILTER

Refer to 

EC-243, "Component Inspection"

.

OK or NG

OK

>> GO TO 9.

NG

>> Replace drain filter. Refer to 

EC-57, "Description"

.

9.

CHECK EVAP CANISTER VENT CONTROL VALVE

Check the following.

• EVAP canister vent control valve is installed properly.

Refer to 

FL-16, "Removal and Installation"

.

• EVAP canister vent control valve.

Refer to 

EC-255, "Component Inspection"

.

OK or NG

OK

>> GO TO 10.

SEF200U

AWBIA0134ZZ

SEF200U

August 2012

2012 Pathfinder

 

 

 

 

 

 

 

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