Nissan Pathfinder (2011 year). Manual - part 273

EC-238

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE]

P0442 EVAP CONTROL SYSTEM

DTC Confirmation Procedure

INFOID:0000000006243933

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

with CONSULT-III.

Follow the instructions displayed.

NOTE:

If the engine speed cannot be maintained within the range displayed on the CONSULT-III 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:0000000006243934

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

2011 Pathfinder

P0442 EVAP CONTROL SYSTEM

EC-239

< DTC/CIRCUIT DIAGNOSIS >

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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-III>>GO TO 6.

Without CONSULT-III>>GO TO 7.

6.

CHECK FOR EVAP LEAK

With CONSULT-III

1. Turn ignition switch ON.

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

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

the bar graph.

CAUTION:

BBIA0550E

SEF916U

2011 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-III

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

2011 Pathfinder

P0442 EVAP CONTROL SYSTEM

EC-241

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NG

>> Repair or replace EVAP canister vent control valve and O-ring. Refer to 

FL-16, "Removal and

Installation"

.

10.

CHECK IF EVAP CANISTER IS SATURATED WITH WATER

1. Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor

attached. Refer to 

FL-16, "Removal and Installation"

.

2. Does water drain from the EVAP canister?
Yes or No

Yes

>> GO TO 11.

No (With CONSULT-III)>>GO TO 13.

No (Without CONSULT-III)>>GO TO 14.

11.

CHECK EVAP CANISTER

Weigh the EVAP canister with the EVAP canister vent control valve and EVAP control system pressure sensor

attached.

The weight should be less than 2.0 kg (4.4 lb).

OK or NG

OK (With CONSULT-III)>>GO TO 13.

OK (Without CONSULT-III)>>GO TO 14.

NG

>> GO TO 12.

12.

DETECT MALFUNCTIONING PART

Check the following.

• EVAP canister for damage

• EVAP hose between EVAP canister and drain filter for clogging or poor connection

>> Repair hose or replace EVAP canister. Refer to 

FL-16, "Removal and Installation"

.

13.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION

With CONSULT-III

1. Disconnect vacuum hose from EVAP canister purge volume control solenoid valve at EVAP service port.

2. Start engine.

3. Perform “PURG VOL CONT/V” in “ACTIVE TEST” mode.

4. Touch “Qu” on CONSULT-III screen to increase “PURG VOL CONT/V” opening to 100%.

5. Check vacuum hose for vacuum when revving engine up to 2,000 rpm.
OK or NG

OK

>> GO TO 17.

NG

>> GO TO 15.

14.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION

Without CONSULT-III

1. Start engine and warm it up to normal operating temperature.

2. Stop engine.

3. Disconnect vacuum hose from EVAP canister purge volume control solenoid valve at EVAP service port.

4. Start engine and let it idle for at least 80 seconds.

5. Check vacuum hose for vacuum when revving engine up to 2,000 rpm.

OK or NG

OK

>> GO TO 16.

NG

>> GO TO 15.

BBIA0558E

Vacuum should exist.

2011 Pathfinder

EC-242

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE]

P0442 EVAP CONTROL SYSTEM

15.

CHECK VACUUM HOSE

Check vacuum hoses for clogging or disconnection. Refer to 

EC-57, "Description"

.

OK or NG

OK

>> GO TO 16.

NG

>> Repair or reconnect the hose.

16.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Refer to 

EC-252, "Component Inspection"

.

OK or NG

OK

>> GO TO 17.

NG

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

EM-27, "Exploded View"

.

17.

CHECK FUEL TANK TEMPERATURE SENSOR

Refer to 

EC-201, "Component Inspection"

.

OK or NG

OK

>> GO TO 18.

NG

>> Replace fuel level sensor unit. Refer to 

FL-11, "Removal and Installation"

.

18.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

Refer to 

EC-268, "Component Inspection"

.

OK or NG

OK

>> GO TO 19.

NG

>> Replace EVAP control system pressure sensor. Refer to 

FL-16, "Removal and Installation"

.

19.

CHECK EVAP PURGE LINE

Check EVAP purge line (pipe, rubber tube, fuel tank and EVAP canister) for cracks or improper connection.

Refer to 

EC-57, "Description"

.

OK or NG

OK

>> GO TO 20.

NG

>> Repair or reconnect the hose.

20.

CLEAN EVAP PURGE LINE

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

>> GO TO 21.

21.

CHECK EVAP/ORVR LINE

Check EVAP/ORVR line between EVAP canister and fuel tank for clogging, kinks, looseness and improper

connection. For location, refer to 

EC-413, "System Description"

.

OK or NG

OK

>> GO TO 22.

NG

>> Repair or replace hoses and tubes.

22.

CHECK RECIRCULATION LINE

Check recirculation line between filler neck tube and fuel tank for clogging, kinks, cracks, looseness and

improper connection.
OK or NG

OK

>> GO TO 23.

NG

>> Repair or replace hose, tube or filler neck tube.

23.

CHECK REFUELING EVAP VAPOR CUT VALVE

Refer to 

EC-416, "Component Inspection"

.

OK or NG

OK

>> GO TO 24.

NG

>> Replace refueling EVAP vapor cut valve with fuel tank. Refer to 

FL-6, "Removal and Installation"

.

2011 Pathfinder

P0442 EVAP CONTROL SYSTEM

EC-243

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24.

CHECK FUEL LEVEL SENSOR

Refer to 

MWI-35, "Component Inspection"

.

OK or NG

OK

>> GO TO 25.

NG

>> Replace fuel level sensor unit. Refer to 

FL-11, "Removal and Installation"

.

25.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-37, "Intermittent Incident"

.

>>

INSPECTION END

Component Inspection

INFOID:0000000006243935

FUEL TANK VACUUM RELIEF VALVE (BUILT INTO FUEL FILLER CAP)

1. Wipe clean valve housing.

2. Check valve opening pressure and vacuum.

3. If out of specification, replace fuel filler cap as an assembly.

Refer to 

FL-6, "Removal and Installation"

.

CAUTION:

Use only a genuine fuel filler cap as a replacement. If an incor-

rect fuel filler cap is used, the MIL may illuminate.

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"

.

SEF445Y

Pressure: 15.3 - 20.0 kPa (0.156 - 0.204 kg/cm

2

, 2.22 - 

2.90 psi)

Vacuum:

−

6.0 to 

−

3.3 kPa (

−

0.061 to 

−

0.034 kg/cm

2

, 

−

0.87 to 

−

0.48 psi)

SEF943S

PBIB3641E

2011 Pathfinder

EC-244

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE]

P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Description

INFOID:0000000006243936

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/OFF operation according to the signal sent from the

ECM. The opening of the valve varies for optimum engine control. The optimum value stored in the ECM is

determined by considering various engine conditions. When the 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 is used to

control the flow rate of fuel vapor from the EVAP canister. 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.

On Board Diagnosis Logic

INFOID:0000000006243937

Sensor

Input Signal to ECM

ECM function

Actuator

Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)

Engine speed*

1

EVAP canister 
purge flow control

EVAP 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

Air fuel ratio (A/F) sensor 1

Density of oxygen in exhaust gas
(Mixture ratio feedback signal)

Fuel tank temperature sensor

Fuel temperature in fuel tank

Wheel sensor

Vehicle speed*

2

PBIB2057E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0443
0443

EVAP canister purge 
volume control solenoid 
valve

A

The canister purge flow is detected during 
the vehicle is stopped while the engine is 
running, 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
(EVAP canister purge volume control so-
lenoid valve is stuck open.)

• EVAP canister vent control valve
• Drain filter
• EVAP canister
• Hoses

(Hoses are connected incorrectly or 
clogged.)

B

The canister purge flow is detected during 
the specified driving conditions, even when 
EVAP canister purge volume control sole-
noid valve is completely closed.

2011 Pathfinder

P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

EC-245

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[VQ40DE]

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DTC Confirmation Procedure

INFOID:0000000006243938

Perform PROCEDURE FOR MALFUNCTION A first.

If the DTC cannot be confirmed, perform PROCEDURE FOR MALFUNCTION B.

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.

PROCEDURE FOR MALFUNCTION A

TESTING CONDITION:

• Perform “DTC Confirmation Procedure” 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 5 to 60

°

C (41 to 140

°

F).

• Cool the vehicle so that engine coolant temperature becomes same level as ambient temperature.

 With CONSULT-III

1. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-III.
2. Check that the following condition are met.

FUEL T/TMP SE: 0 – 35

°

C (32 – 95

°

F)

3. Start engine and wait at least 60 seconds.
4. Check 1st trip DTC.
5. If 1st trip DTC is detected, go to 

EC-246, "Diagnosis Procedure"

.

 With GST

1. Turn ignition switch ON.
2. Set voltmeter probes to ECM terminal 107 (FTT sensor signal)

and ground.

3. Check that the voltage is 3.1 – 4.2 V.
4. Start engine and wait at least 60 seconds.
5. Check 1st trip DTC.
6. If 1st trip DTC is detected, go to 

EC-246, "Diagnosis Procedure"

.

PROCEDURE FOR MALFUNCTION B

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.

 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 CONSULT-III changes to “COMPLETED”. (It will take

approximately 10 seconds.)

If “TESTING” is not displayed after 5 minutes, retry from step 2.

7. Check that “OK” is displayed after touching “SELF-DIAG RESULTS”. If “NG” is displayed, refer to 

EC-246,

"Diagnosis Procedure"

.

 With GST

JPBIA4822ZZ

2011 Pathfinder