Nissan Pathfinder (2012 year). Manual - part 274

EC-255, "Component Inspection"

OK or NG

>> GO TO 11.

>> Replace EVAP canister vent control valve. Refer to

11.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

EC-274, "Component Inspection"

OK or NG

>> GO TO 12.

>> Replace EVAP control system pressure sensor. Refer to

12.

CHECK DRAIN FILTER

EC-274, "Component Inspection"

OK or NG

>> GO TO 13.

>> Replace drain filter. Refer to

13.

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

2. Check if water will drain from the EVAP canister.
Yes or No

Yes

>> GO TO 14.

>> GO TO 16.

14.

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

>> GO TO 16.

>> GO TO 15.

15.

DETECT MALFUNCTIONING PART

Check the following.

• EVAP canister for damage

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

BBIA0558E

August 2012

2012 Pathfinder

EC-274

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE]

P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR

>> Repair hose or replace EVAP canister. Refer to

16.

CHECK INTERMITTENT INCIDENT

GI-37, "Intermittent Incident"

INSPECTION END

Component Inspection

INFOID:0000000007358189

EVAP CONTROL SYSTEM PRESSURE SENSOR

1. Remove EVAP control system pressure sensor with its harness connector connected from EVAP canister.

Always replace O-ring with a new one.

2. Install a vacuum pump to EVAP control system pressure sensor.
3. Turn ignition switch ON and check output voltage between ECM

terminal 32 and ground under the following conditions.

CAUTION:

• Always calibrate the vacuum pump gauge when using it.
• Never apply below -93.3 kPa (-0.952 kg/cm

, -13.53 psi) or

pressure over 101.3 kPa (1.033 kg/cm

, 14.59 psi).

4. If NG, replace EVAP control system pressure sensor. Refer to

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-276, "Diagnosis Procedure"

Applied vacuum kPa

(kg/cm

, psi)

Voltage V

Not applied

1.8 - 4.8

-26.7 (-0.272, -3.87)

2.1 to 2.5V lower than above value

PBIB1173E

PBIB3641E

August 2012

2012 Pathfinder

P0455 EVAP CONTROL SYSTEM

EC-275

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE]

P0455 EVAP CONTROL SYSTEM

On Board Diagnosis Logic

INFOID:0000000007358190

This diagnosis detects a very large leak (fuel filler cap fell off etc.) in EVAP system between the fuel tank and

EVAP canister purge volume control solenoid valve.

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 Procedure

INFOID:0000000007358191

CAUTION:

Never remove fuel filler cap during the DTC Confirmation Procedure.

NOTE:

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0455
0455

EVAP control system
gross leak detected

EVAP control system has a very large leak such
as fuel filler cap fell off, EVAP control system
does not operate properly.

• Fuel filler cap remains open or fails to

close.

• Incorrect fuel tank vacuum relief valve
• Incorrect fuel filler cap used
• 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 so-

lenoid valve and the circuit

• Fuel tank temperature sensor
• O-ring of EVAP canister vent control

valve is missing or damaged.

• EVAP control system pressure sensor
• Refueling EVAP vapor cut valve
• ORVR system leaks

PBIB3640E

August 2012

2012 Pathfinder

EC-276

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE]

P0455 EVAP CONTROL SYSTEM

•

Make sure that EVAP hoses are connected to EVAP canister purge volume control solenoid valve

properly.

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

ducting 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.

•

Open engine hood before conducting the following procedures.

WITH CONSULT

1. Tighten fuel filler cap securely until ratcheting sound is heard.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT.
5. Make sure that the following conditions are met.

COOLAN TEMP/S: 0 - 70

C (32 - 158

INT/A TEMP SE: 0 - 60

C (32 - 140

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

with CONSULT.

Follow the instruction displayed.

NOTE:

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

EC-

20, "Basic Inspection"

7. Make sure that “OK” is displayed.

If “NG” is displayed, select “SELF-DIAG RESULTS” mode and make sure that “EVAP GROSS LEAK

[P0455]” is displayed. If it is displayed, refer to

If P0442 is displayed, perform Diagnostic Procedure for DTC P0442

EC-238, "Diagnosis Procedure"

WITH GST

NOTE:

Be sure to read the explanation of

EC-29, "SRT Set Driving Pattern"

before driving vehicle.

1. Start engine.
2. Drive vehicle according to

EC-71, "DIAGNOSIS DESCRIPTION : 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 P0455 is displayed on the screen, go to

EC-276, "Diagnosis Procedure"

• 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:0000000007358192

CHECK FUEL FILLER CAP DESIGN

1. Turn ignition switch OFF.

2. Check for genuine NISSAN fuel filler cap design.
OK or NG

>> GO TO 2.

>> Replace with genuine NISSAN fuel filler cap. Refer to

FL-6, "Removal and Installation"

SEF915U

August 2012

2012 Pathfinder

P0455 EVAP CONTROL SYSTEM

EC-277

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE]

CHECK FUEL FILLER CAP INSTALLATION

Check that the cap is tightened properly by rotating the cap clockwise.
OK or NG

>> GO TO 3.

>> 1. Open fuel filler cap, then clean cap and fuel filler neck threads using air blower.

2. Retighten until ratcheting sound is heard.

CHECK FUEL FILLER CAP FUNCTION

Check for air releasing sound while opening the fuel filler cap.
OK or NG

>> GO TO 5.

>> GO TO 4.

CHECK FUEL TANK VACUUM RELIEF VALVE

FL-6, "Removal and Installation"

OK or NG

>> GO TO 5.

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

CHECK EVAP PURGE LINE

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

disconnection.

OK or NG

>> GO TO 6.

>> Repair or reconnect the hose.

CLEAN EVAP PURGE LINE

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

>> GO TO 7.

CHECK EVAP CANISTER VENT CONTROL VALVE

Check the following.

• EVAP canister vent control valve is installed properly.

• EVAP canister vent control valve.

OK or NG

>> GO TO 8.

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

FL-16, "Removal and

Installation"

INSTALL THE PRESSURE PUMP

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

sure pump to EVAP service port securely.

NOTE:

Improper installation of the EVAP service port adapter to the

EVAP service port may cause leaking.

BBIA0550E

August 2012

2012 Pathfinder

EC-278

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE]

P0455 EVAP CONTROL SYSTEM

With CONSULT>>GO TO 9.

Without CONSULT>>GO TO 10.

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:

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

, 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.

OK or NG

>> GO TO 11.

>> Repair or replace.

10.

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 1.38 to 2.76

kPa (0.014 to 0.028 kg/cm

, 0.29 to 0.4 psi), 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

, 0.6 psi) of pressure in the system.

SEF916U

SEF200U

AWBIA0134ZZ

August 2012

2012 Pathfinder

P0455 EVAP CONTROL SYSTEM

EC-279

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE]

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

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

OK or NG

>> GO TO 12.

>> Repair or replace.

11.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION

With CONSULT

1. Disconnect vacuum hose to 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 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

>> GO TO 14.

>> GO TO 13.

12.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION

Without CONSULT

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

2. Stop engine.

3. Disconnect vacuum hose to 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

>> GO TO 15.

>> GO TO 13.

13.

CHECK VACUUM HOSE

Check vacuum hoses for clogging or disconnection. Refer to

OK or NG

OK (With CONSULT)>>GO TO 14.

OK (Without CONSULT)>>GO TO 15.

>> Repair or reconnect the hose.

14.

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

>> GO TO 16.

>> GO TO 15.

15.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

EC-252, "Component Inspection"

OK or NG

>> GO TO 16.

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

EM-27, "Exploded View"

SEF200U

Vacuum should exist.

August 2012

2012 Pathfinder

EC-280

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE]

P0455 EVAP CONTROL SYSTEM

16.

CHECK FUEL TANK TEMPERATURE SENSOR

EC-201, "Component Inspection"

OK or NG

>> GO TO 17.

>> Replace fuel level sensor unit. Refer to

FL-11, "Removal and Installation"

17.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

EC-269, "Component Inspection"

OK or NG

>> GO TO 18.

>> Replace EVAP control system pressure sensor. Refer to

EC-416, "System Description"

18.

CHECK EVAP/ORVR LINE

Check EVAP/ORVR line between EVAP canister and fuel tank for clogging, kink, looseness and improper con-

nection. For location, refer to

OK or NG

>> GO TO 19.

>> Repair or replace hoses and tubes.

19.

CHECK RECIRCULATION LINE

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

improper connection.
OK or NG

>> GO TO 20.

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

20.

CHECK REFUELING EVAP VAPOR CUT VALVE

EC-419, "Component Inspection"

OK or NG

>> GO TO 21.

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

FL-6, "Removal and Installation"

21.

CHECK INTERMITTENT INCIDENT