2004 INFINITI FX35 tank

EC-1320
[VK45DE]
EVAPORATIVE EMISSION SYSTEM
Revision: 2004 November 2004 FX35/FX45
EVAPORATIVE EMISSION SYSTEMPFP:14950
DescriptionABS00CFR
SYSTEM DESCRIPTION
The evaporative emission system is used to reduce hydrocarbons emitted into the atmosphere from the fuel
system. This reduction of hydrocarbons is accomplished by activated charcoals in the EVAP canister.
The fuel vapor in the sealed fuel tank is led into the EVAP canister which contains activated carbon and the
vapor is stored there when the engine is not operating or when refueling to the fuel tank.
The vapor in the EVAP canister is purged by the air through the purge line to the intake manifold when the
engine is operating. EVAP canister purge volume control solenoid valve is controlled by ECM. When the
engine operates, the flow rate of vapor controlled by EVAP canister purge volume control solenoid valve is
proportionally regulated as the air flow increases.
EVAP canister purge volume control solenoid valve also shuts off the vapor purge line during decelerating and
idling.
PBIB1631E

EVAPORATIVE EMISSION SYSTEM
EC-1323
[VK45DE]
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: 2004 November 2004 FX35/FX45
Component InspectionABS00CFS
EVAP CANISTER
Check EVAP canister as follows:
1. Block port B .
2. Blow air into port A and check that it flows freely out of port C .
3. Release blocked port B .
4. Apply vacuum pressure to port B and check that vacuum pres-
sure exists at the ports A and C .
5. Block port A and B .
6. Apply pressure to port C and check that there is no leakage.
FUEL TANK VACUUM RELIEF VALVE (BUILT INTO FUEL FULLER 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.
CAUTION:
Use only a genuine fuel filler cap as a replacement. If an incor-
rect fuel filler cap is used, the MIL may come on.
EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
Refer to EC-995 .
FUEL TANK TEMPERATURE SENSOR
Refer to EC-941 .
EVAP CANISTER VENT CONTROL VALVE
Refer to EC-1002 .
EVAP CONTROL SYSTEM PRESSURE SENSOR
Refer to EC-1013 .
PBIB1044E
SEF445Y
Pressure:
15.3 - 20.0 kPa (0.156 - 0.204 kg/cm2 , 2.22
- 2.90 psi)
Va c u u m :
−6.0 to −3.3 kPa (−0.061 to −0.034 kg/cm
2 ,
−0.87 to −0.48 psi)
SEF943S

ON BOARD REFUELING VAPOR RECOVERY (ORVR)
EC-1327
[VK45DE]
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: 2004 November 2004 FX35/FX45
ON BOARD REFUELING VAPOR RECOVERY (ORVR)PFP:00032
System DescriptionABS00CFV
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: INFLAMMABLE” 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 CO2 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-700, "FUEL PRESSURE RELEASE" .
–Disconnect battery ground 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.
PBIB1068E

EC-1328
[VK45DE]
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
Revision: 2004 November 2004 FX35/FX45
Diagnostic ProcedureABS00CFW
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.
2. CHECK IF EVAP CANISTER SATURATED WITH WATER
Does water drain from the EVAP canister?
Ye s o r N o
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-1330, "
Component Inspection" .
OK or NG
OK >>INSPECTION END
NG >> Replace refueling EVAP vapor cut valve with fuel tank.
PBIB1031E

EC-1330
[VK45DE]
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
Revision: 2004 November 2004 FX35/FX45
7. CHECK REFUELING EVAP VAPOR CUT VALVE
Refer to EC-1330, "
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 InspectionABS00CFX
REFUELING EVAP VAPOR CUT VALVE
With CONSULT-II
1. Remove fuel tank. Refer to FL-10, "FUEL TANK" .
2. Drain fuel from the tank as follows:
a. Remove fuel feed hose located on the fuel gauge retainer.
b. Connect a spare fuel hose, one side to fuel gauge retainer where the hose was removed and the other
side to a fuel container.
c. Drain fuel using “FUEL PUMP RELAY” in “ACTIVE TEST” mode with CONSULT-II.
3. 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.
4. Check refueling EVAP vapor cut valve for being stuck to open as follows.
a. Connect vacuum pump to hose end.
b. Remove fuel gauge retainer with fuel gauge unit.
Always replace O-ring with new one.
c. Put fuel tank upside down.
SEF665U

ON BOARD REFUELING VAPOR RECOVERY (ORVR)
EC-1331
[VK45DE]
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: 2004 November 2004 FX35/FX45
d. Apply vacuum pressure to hose end [−13.3 kPa (−100 mmHg, −3.94 inHg)] with fuel gauge retainer
remaining open and check that the pressure is applicable.
Without CONSULT-II
1. Remove fuel tank. Refer to FL-10, "FUEL TANK" .
2. Drain fuel from the tank as follows:
a. Remove fuel gauge retainer.
b. Drain fuel from the tank using a handy pump into a fuel container.
3. 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.
4. Check refueling EVAP vapor cut valve for being stuck to open as follows.
a. Connect vacuum pump to hose end.
b. Remove fuel gauge retainer with fuel gauge unit.
Always replace O-ring with new one.
c. Put fuel tank upside down.
d. Apply vacuum pressure to hose end [−13.3 kPa (−100 mmHg, −3.94 inHg)] with fuel gauge retainer
remaining open and check that the pressure is applicable.
PBIB1035E
PBIB1035E

ENGINE ASSEMBLY
EM-111
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
MA
EM
Revision: 2004 November 2004 FX35/FX45
REMOVAL
Outline
At first, remove engine and transmission assembly with suspension member downward. Then separate
engine from transmission.
Preparation
1. Release fuel pressure. Refer to EC-51, "FUEL PRESSURE RELEASE" .
2. Disconnect both battery terminals.
3. Remove engine cover (Refer to EM-19, "
INTAKE MANIFOLD COLLECTOR" ), battery cover and LH/RH
sides front tire.
4. Remove front and rear engine undercover and front cross bar with power tool.
5. Drain engine coolant from radiator drain plug. Refer to CO-11, "
Changing Engine Coolant" .
6. Remove cowl top cover RH. Refer to EI-24, "
COWL TOP" .
7. Remove air duct and air cleaner case assembly. Refer to EM-17, "
AIR CLEANER AND AIR DUCT" .
8. Remove radiator upper and lower hoses. Refer to CO-14, "
RADIATOR" .
Engine Room
1. Disconnect heater hose from vehicle-side, and fit a plug onto hose end to prevent engine coolant leak.
2. Disconnect grounding wire (between vehicle to left bank cylinder head).
3. Disconnect battery positive cable at vehicle side and temporarily fasten it on engine.
4. Disconnect engine room harness connectors shown in the fig-
ure.
5. Disconnect A/C piping from A/C compressor, and temporarily fasten it on vehicle with a rope.
6. Disconnect two body ground cables.
7. Disconnect brake booster vacuum hose.
8. Disconnect fuel feed hose and EVAP hose.
CAUTION:
Fit plugs onto disconnected hoses to prevent fuel leak.
9. Remove power steering oil pump reservoir tank and piping from vehicle, and temporarily secure them on
engine. Refer to PS-31, "
POWER STEERING OIL PUMP" .
CAUTION:
When temporarily securing, keep them upright to avoid a fluid leak.
Passenger Room Side
1. Follow procedure below to disconnect engine room harness connectors at passenger room side, and tem-
porarily secure them on engine.
SBIA0472E

EM-116
[VQ35DE]
ENGINE ASSEMBLY
Revision: 2004 November 2004 FX35/FX45
Preparation
1. Release fuel pressure. Refer to EC-51, "FUEL PRESSURE RELEASE" .
2. Disconnect both battery terminals.
3. Remove engine cover (Refer to EM-19, "
INTAKE MANIFOLD COLLECTOR" ), battery cover and LH/RH
sides front tire.
4. Remove front and rear engine undercover and front cross bar with power tool.
5. Drain engine coolant from radiator drain plug. Refer to CO-11, "
Changing Engine Coolant" .
6. Remove cowl top cover RH. Refer to EI-24, "
COWL TOP" .
7. Remove air duct and air cleaner case assembly. Refer to EM-17, "
AIR CLEANER AND AIR DUCT" .
8. Remove radiator upper and lower hoses. Refer to CO-14, "
RADIATOR" .
Engine Room
1. Disconnect heater hose from vehicle-side, and fit a plug onto hose end to prevent engine coolant leak.
2. Disconnect grounding wire (between vehicle to left bank cylinder head).
3. Disconnect battery positive cable at vehicle side and temporarily fasten it on engine.
4. Disconnect engine room harness connectors shown in the fig-
ure.
5. Disconnect A/C piping from A/C compressor, and temporarily fasten it on vehicle with a rope.
6. Disconnect two body ground cables.
7. Disconnect brake booster vacuum hose.
8. Disconnect fuel feed hose and EVAP hose.
CAUTION:
Fit plugs onto disconnected hoses to prevent fuel leak.
9. Remove power steering oil pump reservoir tank and piping from vehicle, and temporarily secure them on
engine. Refer to PS-31, "
POWER STEERING OIL PUMP" .
CAUTION:
When temporarily securing, keep them upright to avoid a fluid leak.
Passenger Room Side
1. Follow procedure below to disconnect engine room harness connectors at passenger room side, and tem-
porarily secure them on engine.
a. Remove passenger-side kicking plate, dash side finisher, and
glove box. Refer to EI-37, "
BODY SIDE TRIM" and IP-10,
"INSTRUMENT PANEL ASSEMBLY" .
b. Disconnect engine room harness connectors at unit sides ECM
and other.
c. Disengage intermediate fixing point. Pull out engine room har-
nesses to engine room side, and temporarily secure them on
engine.
CAUTION:

When pulling out harnesses, take care not to damage
harnesses and connectors.

After temporarily securing, cover connectors with vinyl or similar material to protect against for-
eign material adhesion.
SBIA0472E
SBIA0473E