Infiniti FX35 / FX45. Manual - part 321

EVAPORATIVE EMISSION SYSTEM

EC-45

< SERVICE INFORMATION >

[VQ35DE]

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3.

Turn ignition switch ON.

4.

Select the “EVAP SYSTEM CLOSE” of “WORK SUPPORT MODE” with CONSULT-III.

5.

Touch “START”. A bar graph (Pressure indicating display) will appear on the screen.

6.

Apply positive pressure to the EVAP system until the pressure indicator reaches the middle of the bar
graph.

7.

Remove EVAP service port adapter and hose with pressure pump.

8.

Locate the leak using a leak detector. Refer to 

EC-40, "Descrip-

tion"

.

 WITHOUT CONSULT-III

1.

Attach the EVAP service port adapter securely to the EVAP ser-
vice port.

2.

Also attach the pressure pump with pressure gauge to the EVAP
service port adapter.

3.

Apply battery voltage between the terminals of EVAP canister vent control valve to make a closed EVAP
system.

4.

To locate the leak, deliver positive pressure to the EVAP system until pressure gauge points reach 1.38 to
2.76 kPa (0.014 to 0.028 kg/cm

2

, 0.2 to 0.4 psi).

5.

Remove EVAP service port adapter and hose with pressure pump.

6.

Locate the leak using a leak detector. Refer to 

EC-40, "Description"

.

SEF200U

SEF462UA

PBIB1611E

EC-46

< SERVICE INFORMATION >

[VQ35DE]

ON BOARD REFUELING VAPOR RECOVERY (ORVR)

ON BOARD REFUELING VAPOR RECOVERY (ORVR)

System Description

INFOID:0000000001325908

From the beginning of refueling, the air and vapor inside the fuel tank go through refueling EVAP vapor cut
valve and EVAP/ORVR line to the EVAP canister. The vapor is absorbed by the EVAP canister and the air is
released to the atmosphere.
When the refueling has reached the full level of the fuel tank, the refueling EVAP vapor cut valve is closed and
refueling is stopped because of auto shut-off. The vapor which was absorbed by the EVAP canister is purged
during driving.

WARNING:

When conducting inspections below, be sure to observe the following:
• Put a “CAUTION: FLAMMABLE” sign in workshop.
• Do not smoke while servicing fuel system. Keep open flames and sparks away from work area.
• Be sure to furnish the workshop with a CO

2

 fire extinguisher.

CAUTION:

• Before removing fuel line parts, carry out the following procedures:
- Put drained fuel in an explosion-proof container and put lid on securely.
- Release fuel pressure from fuel line. Refer to  

EC-87, "Fuel Pressure Check"

.

- Disconnect negative battery cable.
• Always replace O-ring when the fuel gauge retainer is removed.
• Do not kink or twist hose and tube when they are installed.
• Do not tighten hose and clamps excessively to avoid damaging hoses.
• After installation, run engine and check for fuel leaks at connection.
• Do not attempt to top off the fuel tank after the fuel pump nozzle shuts off automatically.

Continued refueling may cause fuel overflow, resulting in fuel spray and possibly a fire.

Diagnosis Procedure

INFOID:0000000001325909

SYMPTOM: FUEL ODOR FROM EVAP CANISTER IS STRONG.

1.

CHECK EVAP CANISTER

1.

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

2.

Weigh the EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached.
The weight should be less than 2.1 kg (4.6 lb).

OK or NG

OK

>> GO TO 2.

NG

>> GO TO 3.

PBIB1068E

ON BOARD REFUELING VAPOR RECOVERY (ORVR)

EC-47

< SERVICE INFORMATION >

[VQ35DE]

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2.

CHECK IF EVAP CANISTER SATURATED WITH WATER

Does water drain from the EVAP canister?
Yes or No

Yes

>> GO TO 3.

No

>> GO TO 5.

3.

REPLACE EVAP CANISTER

Replace EVAP canister with a new one.

>> GO TO 4.

4.

DETECT MALFUNCTIONING PART

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

>> Repair or replace EVAP hose.

5.

CHECK REFUELING EVAP VAPOR CUT VALVE

Refer to 

EC-48, "Component Inspection"

.

OK or NG

OK

>> INSPECTION END

NG

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

SYMPTOM: CANNOT REFUEL/FUEL ODOR FROM THE FUEL FILLER OPENING IS STRONG
WHILE REFUELING.

1.

CHECK EVAP CANISTER

1.

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

2.

Weigh the EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached.
The weight should be less than 2.1 kg (4.6 lb).

OK or NG

OK

>> GO TO 2.

NG

>> GO TO 3.

2.

CHECK IF EVAP CANISTER SATURATED WITH WATER

Does water drain from the EVAP canister?

Yes or No

Yes

>> GO TO 3.

No

>> GO TO 5.

3.

REPLACE EVAP CANISTER

Replace EVAP canister with a new one.

PBIB1031E

PBIB1031E

EC-48

< SERVICE INFORMATION >

[VQ35DE]

ON BOARD REFUELING VAPOR RECOVERY (ORVR)

>> GO TO 4.

4.

DETECT MALFUNCTIONING PART

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

>> Repair or replace EVAP hose.

5.

CHECK VENT HOSES AND VENT TUBES

Check hoses and tubes between EVAP canister and refueling control valve for clogging, kink, looseness and
improper connection.

OK or NG

OK

>> GO TO 6.

NG

>> Repair or replace hoses and tubes.

6.

CHECK FILLER NECK TUBE

Check recirculation line for clogging, dents and cracks. 
OK or NG

OK

>> GO TO 7.

NG

>> Replace filler neck tube.

7.

CHECK REFUELING EVAP VAPOR CUT VALVE

Refer to 

EC-48, "Component Inspection"

.

OK or NG

OK

>> GO TO 8.

NG

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

8.

CHECK FUEL FILLER TUBE

Check filler neck tube and hose connected to the fuel tank for clogging, dents and cracks.

OK or NG

OK

>> GO TO 9.

NG

>> Replace fuel filler tube.

9.

CHECK ONE-WAY FUEL VALVE-I

Check one-way valve for clogging.
OK or NG

OK

>> GO TO 10.

NG

>> Repair or replace one-way fuel valve with fuel tank.

10.

CHECK ONE-WAY FUEL VALVE-II

1.

Make sure that fuel is drained from the tank.

2.

Remove fuel filler tube and hose.

3.

Check one-way fuel valve for operation as follows.
When a stick is inserted, the valve should open, when removing
stick it should close.
Do not drop any material into the tank.

OK or NG

OK

>> INSPECTION END

NG

>> Replace fuel filler tube or replace one-way fuel valve

with fuel tank.

Component Inspection

INFOID:0000000001325910

REFUELING EVAP VAPOR CUT VALVE

SEF665U