Infiniti G35 (V35) Sedan. Manual - part 582

EC-474

< COMPONENT DIAGNOSIS >

[VQ35HR]

ON BOARD REFUELING VAPOR RECOVERY (ORVR)

Check if water will drain from EVAP canister (1).

Does water drain from the EVAP canister?

YES

>> GO TO 9.

NO

>> GO TO 11.

9.

REPLACE EVAP CANISTER

Replace EVAP canister with a new one.

>> GO TO 10.

10.

DETECT MALFUNCTIONING PART

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

>> Repair or replace EVAP hose.

11.

CHECK VENT HOSES AND VENT TUBES

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

Is the inspection result normal?

YES

>> GO TO 12.

NO

>> Repair or replace hoses and tubes.

12.

CHECK FILLER NECK TUBE

Check recirculation line for clogging, dents and cracks. 

Is the inspection result normal?

YES

>> GO TO 13.

NO

>> Replace filler neck tube.

13.

CHECK REFUELING EVAP VAPOR CUT VALVE

Refer to 

EC-475, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 14.

NO

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

14.

CHECK FUEL FILLER TUBE

Check filler neck tube and hose connected to the fuel tank for clogging, dents and cracks.
Is the inspection result normal?

YES

>> GO TO 15.

NO

>> Replace fuel filler tube.

15.

CHECK ONE-WAY FUEL VALVE-I

Check one-way valve for clogging.

Is the inspection result normal?

YES

>> GO TO 16.

NO

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

16.

CHECK ONE-WAY FUEL VALVE-II

1.

Make sure that fuel is drained from the tank.

2.

Remove fuel filler tube and hose.

2

: EVAP canister vent control valve

PBIB2731E

ON BOARD REFUELING VAPOR RECOVERY (ORVR)

EC-475

< COMPONENT DIAGNOSIS >

[VQ35HR]

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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.

Is the inspection result normal?

YES

>> INSPECTION END

NO

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

with fuel tank.

Component Inspection

INFOID:0000000000956888

1.

INSPECTION START

Do you have CONSULT-III?
Do you have CONSULT-III?

YES

>> GO TO 2.

NO

>> GO TO 3.

2.

CHECK REFUELING EVAP VAPOR CUT VALVE

 With CONSULT-III

1.

Turn ignition switch OFF.

2.

Remove fuel tank. Refer to 

FL-10, "Removal and Installation"

.

3.

Drain fuel from the tank as follows:

-

Remove fuel feed hose located on the fuel gauge retainer.

-

Connect a spare fuel hose, one side to fuel gauge retainer where the hose was removed and the other
side to a fuel container.

-

Drain fuel using “FUEL PUMP RELAY” in “ACTIVE TEST” mode with CONSULT-III.

4.

Check refueling EVAP vapor cut valve for being stuck to close as follows.
Blow air into the refueling EVAP vapor cut valve (from the end of EVAP/ORVR line hose), and check that
the air flows freely into the tank.

5.

Check refueling EVAP vapor cut valve for being stuck to open as follows.

-

Connect vacuum pump to hose end.

-

Remove fuel gauge retainer with fuel gauge unit.

Always replace O-ring with new one.

-

Put fuel tank upside down.

-

Apply vacuum pressure to hose end [

−

13.3 kPa (

−

0.136 kg/cm

3

, 

−

1.93 psi)] with fuel gauge retainer

remaining open and check that the pressure is applicable.

Is the inspection result normal?

YES

>> INSPECTION END

SEF665U

PBIB1035E

EC-476

< COMPONENT DIAGNOSIS >

[VQ35HR]

ON BOARD REFUELING VAPOR RECOVERY (ORVR)

NO

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

3.

CHECK REFUELING EVAP VAPOR CUT VALVE

 Without CONSULT-III

1.

Turn ignition switch OFF.

2.

Remove fuel tank. Refer to 

FL-10, "Removal and Installation"

.

3.

Drain fuel from the tank as follows:

-

Remove fuel gauge retainer.

-

Drain fuel from the tank using a handy pump into a fuel container.

4.

Check refueling EVAP vapor cut valve for being stuck to close as follows.
Blow air into the refueling EVAP vapor cut valve (from the end of EVAP/ORVR line hose), and check that
the air flows freely into the tank.

5.

Check refueling EVAP vapor cut valve for being stuck to open as follows.

-

Connect vacuum pump to hose end.

-

Remove fuel gauge retainer with fuel gauge unit.

Always replace O-ring with new one.

-

Put fuel tank upside down.

-

Apply vacuum pressure to hose end [

−

13.3 kPa (

−

0.136 kg/cm

3

, 

−

1.93 psi)] with fuel gauge retainer

remaining open and check that the pressure is applicable.

Is the inspection result normal?

YES

>> INSPECTION END

NO

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

PBIB1035E

POSITIVE CRANKCASE VENTILATION

EC-477

< COMPONENT DIAGNOSIS >

[VQ35HR]

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POSITIVE CRANKCASE VENTILATION

Description

INFOID:0000000000956889

This system returns blow-by gas to the intake manifold.
The positive crankcase ventilation (PCV) valve is provided to conduct crankcase blow-by gas to the intake
manifold.
During partial throttle operation of the engine, the intake manifold sucks the blow-by gas through the PCV
valve.
Normally, the capacity of the valve is sufficient to handle any blow-by and a small amount of ventilating air.
The ventilating air is then drawn from the air inlet tubes into the crankcase. In this process the air passes
through the hose connecting air inlet tubes to rocker cover.
Under full-throttle condition, the manifold vacuum is insufficient to draw the blow-by flow through the valve.
The flow goes through the hose connection in the reverse direction.
On vehicles with an excessively high blow-by, the valve does not
meet the requirement. This is because some of the flow will go
through the hose connection to the air inlet tubes under all condi-
tions.

Component Inspection

INFOID:0000000000956890

1.

CHECK PCV VALVE

1.

PCV valve

2.

Electric throttle control actuator

3.

Mass air flow sensor

A.

Normal condition

B.

Hi-load condition

 : Fresh air

 : Blow-by air

JMBIA0061ZZ

PBIB1588E