Nissan Murano Z51 (2008 year). Manual - part 156

EC-12, "BASIC INSPECTION : Special Repair Requirement"

>> INSPECTION END

Component Inspection

INFOID:0000000003625711

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

Turn ignition switch OFF.

Remove EVAP control system pressure sensor with its harness connector.
Always replace O-ring with a new one.

Install a vacuum pump to EVAP control system pressure sensor.

Turn ignition switch ON and check output voltage between ECM terminals 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

14.69 psi).

Is the inspection result normal?

JMBIA1134GB

ECM

Applied vacuum kPa

(kg/cm

, psi)

Voltage

Connector

–

Terminal

E16

(EVAP control system

pressure sensor signal)

(Sensor ground)

Not applied

1.8 - 4.8 V

-26.7 (-0.272, -3.87)

2.1 to 2.5 V lower than

above value

Revision: 2008 October

2009 Murano

EC-314

< COMPONENT DIAGNOSIS >

[VQ35DE]

P0455 EVAP CONTROL SYSTEM

P0455 EVAP CONTROL SYSTEM

DTC Logic

INFOID:0000000003388083

DTC DETECTION LOGIC

This diagnosis detects a very large leakage (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 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 CONFIRMATION PROCEDURE

PRECONDITIONING

CAUTION:

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0455

EVAP control system
gross leakage detected

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

• Fuel filler cap remains open or does not

close.

• Incorrect fuel tank vacuum relief valve
• Incorrect fuel filler cap used
• Foreign matter caught in fuel filler cap.
• Leakage is in line between intake mani-

fold and EVAP canister purge volume
control solenoid valve.

• Foreign matter caught in EVAP canister

vent control valve.

• EVAP canister or fuel tank leakage
• EVAP purge line (pipe and rubber tube)

leakage

• 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 leakage

PBIB1026E

Revision: 2008 October

2009 Murano

P0455 EVAP CONTROL SYSTEM

EC-315

< COMPONENT DIAGNOSIS >

[VQ35DE]

Never remove fuel filler cap during the DTC Confirmation Procedure.
If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing the next test.
1.

Turn ignition switch OFF and wait at least 10 seconds.

Turn ignition switch ON.

Turn ignition switch OFF and wait at least 10 seconds.

Check that EVAP hoses are connected to EVAP canister purge volume control solenoid valve properly.
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.

Will CONSULT-III be used?

YES

>> GO TO 2.

>> GO TO 4.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT-III

Tighten fuel filler cap securely until ratcheting sound is heard.

Turn ignition switch ON.

Turn ignition switch OFF and wait at least 10 seconds.

Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-III.

Check that the following conditions are met.
COOLAN TEMP/S: 0 - 70

C (32 - 158

INT/A TEMP SE: 0 - 60

C (32 - 140

Select “EVP SML LEAK P0442/P1442” 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

Which is displayed on CONSULT-III screen?

>> INSPECTION END

>> GO TO 3.

CHECK DTC

Check DTC.
Which DTC is detected?

P0455 >> Go to

EC-316, "Diagnosis Procedure"

P0442 >> Go to

EC-279, "Diagnosis Procedure"

PERFORM DTC CONFIRMATION PROCEDURE

With GST

NOTE:
Be sure to read the explanation of DRIVING PATTERN in

EC-524, "How to Set SRT Code"

before driving

vehicle.
1.

Start engine.

Drive vehicle according to DRIVING PATTERN.

Stop vehicle.

Turn ignition switch OFF and wait at least 10 seconds.

Turn ignition switch ON.

Turn ignition switch OFF and wait at least 10 seconds.

Turn ignition switch ON.

Check 1st trip DTC.

Is 1st trip DTC detected?

YES-1 >> P0455: Go to

EC-316, "Diagnosis Procedure"

YES-2 >> P0442: Go to

EC-279, "Diagnosis Procedure"

YES-3 >> P0441: Go to

EC-275, "Diagnosis Procedure"

>> INSPECTION END

Revision: 2008 October

2009 Murano

EC-316

< COMPONENT DIAGNOSIS >

[VQ35DE]

P0455 EVAP CONTROL SYSTEM

Diagnosis Procedure

INFOID:0000000003388084

CHECK FUEL FILLER CAP DESIGN

Turn ignition switch OFF.

Check for genuine NISSAN fuel filler cap design.

Is the inspection result normal?

YES

>> GO TO 2.

>> Replace with genuine NISSAN fuel filler cap.

CHECK FUEL FILLER CAP INSTALLATION

Check that the cap is tightened properly by rotating the cap clockwise.

Is the inspection result normal?

YES

>> GO TO 3.

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

ratcheting sound is heard.

CHECK FUEL FILLER CAP FUNCTION

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

Is the inspection result normal?

YES

>> GO TO 5.

>> GO TO 4.

CHECK FUEL TANK VACUUM RELIEF VALVE

EC-318, "Component Inspection"

Is the inspection result normal?

YES

>> GO TO 5.

>> Replace fuel filler cap with a genuine one.

CHECK EVAP PURGE LINE

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

Is the inspection result normal?

YES

>> 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.

EC-549, "Removal and Installation"

• EVAP canister vent control valve.

EC-294, "Component Inspection"

Is the inspection result normal?

YES

>> GO TO 8.

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

SEF915U

Revision: 2008 October

2009 Murano

P0455 EVAP CONTROL SYSTEM

EC-317

< COMPONENT DIAGNOSIS >

[VQ35DE]

CHECK FOR EVAP LEAKAGE

EC-547, "Inspection"

Is there any leakage in EVAP line?

YES

>> Repair or replace.

NO-1

>> With CONSULT-III: GO TO 9.

NO-2

>> Without CONSULT-III: GO TO 10.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION

With CONSULT-III

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

Start engine.

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

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

Check vacuum hose for vacuum.

Is the inspection result normal?

YES

>> GO TO 12.

>> GO TO 11.

10.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION

Without CONSULT-III

Start engine and warm it up to normal operating temperature.

Stop engine.

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

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

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

Is the inspection result normal?

YES

>> GO TO 13.

>> GO TO 11.

11.

CHECK VACUUM HOSE

Check vacuum hoses for clogging or disconnection. Refer to

Is the inspection result normal?

YES-1 >> With CONSULT-III: GO TO 12.
YES-2 >> Without CONSULT-III: GO TO 13.
NO

>> Repair or reconnect the hose.

12.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

With CONSULT-III

Start engine.

Perform “PURG VOL C/V” in “ACTIVE TEST” mode with CONSULT-III. Check that engine speed varies
according to the valve opening.

Does engine speed vary according to the valve opening?

YES

>> GO TO 14.

>> GO TO 13.

13.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

EC-287, "Component Inspection"

Is the inspection result normal?

YES

>> GO TO 14.

>> Replace EVAP canister purge volume control solenoid valve.

14.

CHECK FUEL TANK TEMPERATURE SENSOR

Vacuum should exist.

Revision: 2008 October

2009 Murano

EC-318

< COMPONENT DIAGNOSIS >

[VQ35DE]

P0455 EVAP CONTROL SYSTEM

EC-238, "Component Inspection"

Is the inspection result normal?

YES

>> GO TO 15.

>> Replace fuel level sensor unit.

15.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

EC-302, "Component Inspection"

Is the inspection result normal?

YES

>> GO TO 16.

>> Replace EVAP control system pressure sensor.

16.

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-457, "Description"

Is the inspection result normal?

YES

>> GO TO 17.

>> Repair or replace hoses and tubes.

17.

CHECK RECIRCULATION LINE

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

Is the inspection result normal?

YES

>> GO TO 18.

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

18.

CHECK REFUELING EVAP VAPOR CUT VALVE

EC-460, "Component Inspection"

Is the inspection result normal?

YES

>> GO TO 19.

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

19.

CHECK INTERMITTENT INCIDENT

EC-12, "BASIC INSPECTION : Special Repair Requirement"

>> INSPECTION END

Component Inspection

INFOID:0000000003591639

CHECK FUEL FILLER CAP

Turn ignition switch OFF.

Remove fuel filler cap.

Wipe clean valve housing.

Install fuel filler cap adapter (commercial service tool) to fuel filler cap.

SEF445Y

Revision: 2008 October

2009 Murano

P0455 EVAP CONTROL SYSTEM

EC-319

< COMPONENT DIAGNOSIS >

[VQ35DE]

Check valve opening pressure and vacuum.

Is the inspection result normal?

YES

>> INSPECTION END

>> GO TO 2.

REPLACE FUEL FILLER CAP

Replace fuel filler cap.

CAUTION:

Use only a genuine fuel filler cap as a replacement. If an incorrect fuel filler cap is used, the MIL may
illuminate.

>> INSPECTION END

Pressure:

15.3 - 20.0 kPa (0.156 - 0.204 kg/cm

, 2.22 -

2.90 psi)

Vacuum:

−

6.0 to

−

3.3 kPa (

−

0.061 to

−

0.034 kg/cm

−

0.87 to

−

0.48 psi)

SEF943S

Revision: 2008 October

2009 Murano

EC-320

< COMPONENT DIAGNOSIS >

[VQ35DE]

P0456 EVAP CONTROL SYSTEM

P0456 EVAP CONTROL SYSTEM

DTC Logic

INFOID:0000000003388086

DTC DETECTION LOGIC

NOTE:
If DTC P0456 is displayed with DTC P0442, first perform the trouble diagnosis for DTC P0456.
This diagnosis detects very small leakage in the EVAP line between fuel tank and EVAP canister purge vol-
ume control solenoid valve, using the negative pressure.
If ECM judges a leakage which corresponds to a very small leakage, the very small leakage P0456 will be
detected.
If ECM judges a leakage equivalent to a small leakage, EVAP small leakage P0442 will be detected.
If ECM judges that there are no leakage, the diagnosis will be OK.

CAUTION:

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0456

Evaporative emission
control system very
small leakage (negative
pressure check)

• EVAP system has a very small leak-

age.

• EVAP system does not operate prop-

erly.

• Incorrect fuel tank vacuum relief valve
• Incorrect fuel filler cap used
• Fuel filler cap remains open or does not close.
• Foreign matter caught in fuel filler cap.
• Leakage 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 leakage
• EVAP purge line (pipe and rubber tube) leakage
• 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 miss-

ing or damaged

• EVAP canister is saturated with water
• EVAP control system pressure sensor
• Refueling EVAP vapor cut valve
• ORVR system leakage
• Fuel level sensor and the circuit
• Foreign matter caught in EVAP canister purge vol-

ume control solenoid valve

PBIB1026E

Revision: 2008 October

2009 Murano

P0456 EVAP CONTROL SYSTEM

EC-321

< COMPONENT DIAGNOSIS >

[VQ35DE]

• 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 CONFIRMATION PROCEDURE

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing the next test.
1.

Turn ignition switch OFF and wait at least 10 seconds.

Turn ignition switch ON.

Turn ignition switch OFF and wait at least 10 seconds.

Will CONSULT-III be used?

YES

>> GO TO 2.

>> GO TO 4.

PRECONDITIONING

If DTC CONFIRMATION PROCEDURE has been previously conducted, always turn ignition switch OFF and
wait at least 10 seconds before conducting the next test.
NOTE:
• After repair, make sure that the hoses and clips are installed properly.
• Check that EVAP hoses are connected to EVAP canister purge volume control solenoid valve prop-

erly.

TESTING CONDITION:
• Open engine hood before conducting the following procedure.
• If any of following conditions are met just before the DTC CONFIRMATION PROCEDURE, leave the

vehicle for more than 1 hour.

- Fuel filler cap is removed.
- Fuel is refilled or drained.
- EVAP component part/parts is/are removed.
• Before performing the following procedure, confirm that battery voltage is more than 11 V at idle.

>> GO TO 3.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT-III

Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-III.

Check that the following conditions are met.
FUEL LEVEL SE: 0.25 - 1.4 V
COOLAN TEMP/S: 0 - 32

C (32 - 90

FUEL T/TMP SE: 0 - 35

C (32 - 95

INT A/TEMP SE: More than 0

C (32

If NG, turn ignition switch OFF and leave the vehicle in a cool place (soak the vehicle), or refill/drain fuel
until the output voltage of the “FUEL LEVEL SE” meets within the range above and leave the vehicle for
more than 1 hour. Then start from step 1.

Turn ignition switch OFF and wait at least 10 seconds.

Turn ignition switch ON.

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 CONSULT-III screen, go to

Which is displayed on CONSULT-III?

>> INSPECTION END

>> Go to

EC-322, "Diagnosis Procedure"

PERFORM COMPONENT FUNCTION CHECK

Perform Component Function Check. Refer to

EC-322, "Component Function Check"

Revision: 2008 October

2009 Murano

EC-322

< COMPONENT DIAGNOSIS >

[VQ35DE]

P0456 EVAP CONTROL SYSTEM

NOTE:
Use Component Function Check to check the overall function of the EVAP very small leakage function. During
this check, a 1st trip DTC might not be confirmed.

Is the inspection result normal?

YES

>> INSPECTION END

>> Go to

EC-322, "Diagnosis Procedure"

Component Function Check

INFOID:0000000003733525

PERFORM COMPONENT FUNCTION CHECK

With GST

CAUTION:

• Never use compressed air, doing so may damage the EVAP system.
• Never start engine.
• Never exceed 4.12 kPa (0.042 kg/cm

, 0.6 psi).

Attach the EVAP service port adapter (commercial service tool) securely to the EVAP service port.

Set the pressure pump and a hose.

Also set a vacuum gauge via 3-way connector and a hose.

Turn ignition switch ON.

Connect GST and select Service $08.

Using Service $08 control the EVAP canister vent control valve
(close).

Apply pressure and make sure the following conditions are sat-
isfied.
Pressure to be applied: 2.7 kPa (0.028 kg/cm

, 0.39 psi)

Time to be waited after the pressure drawn in to the EVAP
system and the pressure to be dropped: 60 seconds and
the pressure should not be dropped more than 0.4 kPa
(0.004 kg/cm

, 0.06 psi).

Is the inspection result normal?

YES

>> GO TO 2.

>> Go to

EC-322, "Diagnosis Procedure"

RELEASE PRESSURE

Disconnect GST.

Start engine and warm it up to normal operating temperature.

Turn ignition switch OFF and wait at least 10 seconds.

Restart engine and let it idle for 90 seconds.

Keep engine speed at 2,000 rpm for 30 seconds.

Turn ignition switch OFF.
NOTE:
For more information, refer to GST Instruction Manual.

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000003388088

CHECK FUEL FILLER CAP DESIGN

Turn ignition switch OFF.

SEF462UI

Revision: 2008 October

2009 Murano

P0456 EVAP CONTROL SYSTEM

EC-323

< COMPONENT DIAGNOSIS >

[VQ35DE]

Check for genuine NISSAN fuel filler cap design.

Is the inspection result normal?

YES

>> GO TO 2.

>> Replace with genuine NISSAN fuel filler cap.

CHECK FUEL FILLER CAP INSTALLATION

Check that the cap is tightened properly by rotating the cap clockwise.

Is the inspection result normal?

YES

>> GO TO 3.

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

ratcheting sound is heard.

CHECK FUEL FILLER CAP FUNCTION

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

Is the inspection result normal?

YES

>> GO TO 5.

>> GO TO 4.

CHECK FUEL TANK VACUUM RELIEF VALVE

EC-326, "Component Inspection"

Is the inspection result normal?

YES

>> GO TO 5.

>> Replace fuel filler cap with a genuine one.

CHECK FOR EVAP LEAKAGE

EC-547, "Inspection"

Is there any leakage in EVAP line?

YES

>> Repair or replace malfunctioning part.

>> GO TO 6.

CHECK EVAP CANISTER VENT CONTROL VALVE

Check the following.
• EVAP canister vent control valve is installed properly.

EC-549, "Removal and Installation"

• EVAP canister vent control valve.

EC-294, "Component Inspection"

Is the inspection result normal?

YES

>> GO TO 7.

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

CHECK IF EVAP CANISTER IS SATURATED WITH WATER

SEF915U

Revision: 2008 October

2009 Murano

EC-324

< COMPONENT DIAGNOSIS >

[VQ35DE]

P0456 EVAP CONTROL SYSTEM

Remove EVAP canister with EVAP canister vent control valve and
EVAP control system pressure sensor attached.
Does water drain from the EVAP canister?

YES

>> GO TO 8.

NO-1

>> With CONSULT-III: GO TO 10.

NO-2

>> Without CONSULT-III: GO TO 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 2.1 kg (4.6 lb).

Is the inspection result normal?

YES-1 >> With CONSULT-III: GO TO 10.
YES-2 >> Without CONSULT-III: GO TO 11.
NO

>> GO TO 9.

DETECT MALFUNCTIONING PART

Check the following.
• EVAP canister for damage
• EVAP hose between EVAP canister and vehicle frame for clogging or poor connection

>> Repair hose or replace EVAP canister.

10.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION

With CONSULT-III

Disconnect vacuum hose connected to EVAP service port and EVAP canister purge volume control sole-
noid valve from EVAP service port.

Start engine.

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

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

Check vacuum hose for vacuum.

Is the inspection result normal?

YES

>> GO TO 13.

>> GO TO 12.

11.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION

Without CONSULT-III

Start engine and warm it up to normal operating temperature.

Stop engine.

Disconnect vacuum hose connected to EVAP service port and EVAP canister purge volume control sole-
noid valve from EVAP service port.

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

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

Is the inspection result normal?

YES

>> GO TO 14.

>> GO TO 12.

12.

CHECK VACUUM HOSE

Check vacuum hoses for clogging or disconnection. Refer to

JMBIA1134GB

Vacuum should exist.

Revision: 2008 October

2009 Murano

P0456 EVAP CONTROL SYSTEM

EC-325

< COMPONENT DIAGNOSIS >

[VQ35DE]

Is the inspection result normal?

YES

>> GO TO 13.

>> Repair or reconnect the hose.

13.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

EC-287, "Component Inspection"

Is the inspection result normal?

YES

>> GO TO 14.

>> Replace EVAP canister purge volume control solenoid valve.

14.

CHECK FUEL TANK TEMPERATURE SENSOR

EC-238, "Component Inspection"

Is the inspection result normal?

YES

>> GO TO 15.

>> Replace fuel level sensor unit.

15.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

EC-302, "Component Inspection"

Is the inspection result normal?

YES

>> GO TO 16.

>> Replace EVAP control system pressure sensor.

16.

CHECK EVAP PURGE LINE

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

Is the inspection result normal?

YES

>> GO TO 17.

>> Repair or reconnect the hose.

17.

CLEAN EVAP PURGE LINE

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

>> GO TO 18.

18.

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-457, "Description"

Is the inspection result normal?

YES

>> 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, kinks, cracks, looseness and
improper connection.

Is the inspection result normal?

YES

>> GO TO 20.

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

20.

CHECK REFUELING EVAP VAPOR CUT VALVE

EC-460, "Component Inspection"

Is the inspection result normal?

YES

>> GO TO 21.

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

21.

CHECK FUEL LEVEL SENSOR

MWI-47, "Component Inspection"

Is the inspection result normal?

Revision: 2008 October

2009 Murano

EC-326

< COMPONENT DIAGNOSIS >

[VQ35DE]

P0456 EVAP CONTROL SYSTEM

YES

>> GO TO 22.

>> Replace fuel level sensor unit.

22.

CHECK INTERMITTENT INCIDENT

EC-327, "Diagnosis Procedure"

>> INSPECTION END

Component Inspection

INFOID:0000000003591640

CHECK FUEL FILLER CAP

Turn ignition switch OFF.

Remove fuel filler cap.

Wipe clean valve housing.

Install fuel filler cap adapter (commercial service tool) to fuel filler cap.

Check valve opening pressure and vacuum.

Is the inspection result normal?

YES

>> INSPECTION END

>> GO TO 2.

REPLACE FUEL FILLER CAP

Replace fuel filler cap.

CAUTION:

Use only a genuine fuel filler cap as a replacement. If an incorrect fuel filler cap is used, the MIL may
illuminate.

>> INSPECTION END

SEF445Y

Pressure:

15.3 - 20.0 kPa (0.156 - 0.204 kg/cm

, 2.22 -

2.90 psi)

Vacuum:

−

6.0 to

−

3.3 kPa (

−

0.061 to

−

0.034 kg/cm

−

0.87 to

−

0.48 psi)

SEF943S

Revision: 2008 October

2009 Murano

P0460 FUEL LEVEL SENSOR

EC-327

< COMPONENT DIAGNOSIS >

[VQ35DE]

P0460 FUEL LEVEL SENSOR

Description

INFOID:0000000003388090

The fuel level sensor is mounted in the fuel level sensor unit.
The sensor detects a fuel level in the fuel tank and transmits a signal to the combination meter. The combina-
tion meter sends the fuel level sensor signal to the ECM via the CAN communication line.
It consists of two parts, one is mechanical float and the other is variable resistor. Fuel level sensor output volt-
age changes depending on the movement of the fuel mechanical float.

DTC Logic

INFOID:0000000003388091

DTC DETECTION LOGIC

NOTE:
• If DTC P0460 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX.
• If DTC P0460 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer

EC-346, "DTC Logic"

When the vehicle is parked, the fuel level in the fuel tank is naturally stable. It means that output signal of the
fuel level sensor does not change. If ECM senses sloshing signal from the sensor, fuel level sensor malfunc-
tion is detected.

DTC CONFIRMATION PROCEDURE

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing the next test.
1.

Turn ignition switch OFF and wait at least 10 seconds.

Turn ignition switch ON.

Turn ignition switch OFF and wait at least 10 seconds.

>> GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

Start engine and wait maximum of 2 consecutive minutes.

Check 1st trip DTC.

Is 1st trip DTC detected?

YES

>> Go to

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000003388092

CHECK COMBINATION METER FUNCTION

MWI-34, "CONSULT-III Function (METER/M&A)"

Is the inspection result normal?

YES

>> GO TO 2.

>> Go to

MWI-46, "Diagnosis Procedure"

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