2005 INFINITI FX35 fuel tank removal

ENGINE ASSEMBLY EM-241
[VK45DE]
C
D E
F
G H
I
J
K L
M A
EM
Revision: 2005 July 2005 FX
Preparation
1. Release fuel pressure. Refer to EC-789, "FUEL PRESSURE RELEASE" .
2. Drain engine coolant from radiator. Refer to CO-37, "
Changing Engine Coolant" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant on drive belts.
3. Disconnect both battery terminal. Refer to SC-4, "
BATTERY" .
4. Remove crankshaft position sensor (POS) from transmission. CAUTION:

Handle carefully to avoid dropping and shocks.

Do not disassemble.

Do not allow metal powder to adhere to magnetic part at sensor tip.

Do not place sensors in a location where they are exposed to magnetism.
5. Remove the following parts:

Hood assembly; Refer to BL-13, "HOOD" .

Engine cover; Refer to EM-172, "ENGINE ROOM COVER" .

Front and rear engine undercover

Air duct (inlet), air duct and air cleaner case assembly; Refer to EM-176, "AIR CLEANER AND AIR
DUCT" .

Drive belts; Refer to EM-173, "DRIVE BELTS" .

Radiator and radiator hoses (upper and lower); Refer to CO-41, "RADIATOR" .

Front road wheels and tires
Engine Room LH
1. Disconnect engine room harness from the engine side and set it aside for easier work.
2. Disconnect heater hoses, and install plugs to avoid leakage of engine coolant.
3. Disconnect ground cable from exhaust manifold cover to vehicle.
4. Disconnect vacuum hose between vehicle and engine and set it aside.
5. Discharge refrigerant from A/C circuit. Refer to ATC-138, "
REFRIGERANT LINES" .
6. Remove A/C piping from A/C compressor, and temporarily fasten it on vehicle with a rope. Refer to AT C -
140, "Components" .
Engine Room RH
1. Disconnect fuel feed hose and EVAP hose. Refer to EM-192, "FUEL INJECTOR AND FUEL TUBE" .
CAUTION:
Fit plugs onto disconnected hose to prevent fuel leak.
2. Disconnect engine room harness from the engine side and set it aside for easier work.
3. Disconnect ground cable from exhaust manifold cover to vehicle.
4. Disconnect vacuum hose between vehicle and engine and set it aside.
5. Disconnect reservoir tank of power steering oil pump from engine, and move it aside for easier work. CAUTION:
When temporarily securing, keep reservoir tank upright to avoid a fluid leak.
Vehicle Underbody
1. Remove front cross bar. Refer to FSU-6, "FRONT SUSPENSION ASSEMBLY" .
2. Disconnect power steering oil pump from engine. Move it from its location and secure with a rope for eas- ier work. Refer to PS-33, "
Removal and Installation (VK45DE Models)" .
3. Remove A/T fluid cooler tube. Refer to AT- 2 7 0 , "
TRANSMISSION ASSEMBLY" .
4. Remove exhaust front tube and center muffler with power tool. Refer to EX-3, "
EXHAUST SYSTEM" .
5. Remove RH and LH transverse link mounting bolts and nuts. Refer to FSU-14, "
TRANSVERSE LINK" .
6. Disconnect stabilizer connecting rod lower. Refer to FSU-6, "
FRONT SUSPENSION ASSEMBLY" .
7. Remove A/T control rod at control device assembly side. Then temporarily secure it on transmission, so that it does not sag. Refer to AT- 2 3 3 , "
SHIFT CONTROL SYSTEM" .

FL-1
FUEL SYSTEM
B ENGINE
CONTENTS
C
D E
F
G H
I
J
K L
M
SECTION FL
A
FL
Revision: 2005 July 2005 FX
FUEL SYSTEM
PREPARATION ........................................................... 2
Commercial Service Tools ................................... ..... 2
FUEL SYSTEM ...................................................... ..... 3
Checking Fuel Lines ............................................ ..... 3
General Precautions ........................................... ..... 3
FUEL LEVEL SENSOR UNIT, FUEL FILTER AND
FUEL PUMP ASSEMBLY ...................................... ..... 4
Removal and Installation ..................................... ..... 4
REMOVAL ........................................................ ..... 4
INSTALLATION ................................................ ..... 6 INSPECTION AFTER INSTALLATION .............
..... 7
Disassembly and Assembly ................................. ..... 8
DISASSEMBLY ................................................ ..... 8
ASSEMBLY ...................................................... ..... 9
FUEL TANK ........................................................... ... 10
Removal and Installation ..................................... ... 10
REMOVAL ........................................................ ... 10
INSTALLATION ................................................ ... 11
INSPECTION AFTER INSTALLATION ............. ... 11
SERVICE DATA AND SPECIFICATIONS (SDS) ... ... 12
Standard and Limit ............................................... ... 12
FUEL TANK ...................................................... ... 12

FL-4
FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
Revision: 2005 July 2005 FX
FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLYPFP:17042
Removal and InstallationABS005YZ
REMOVAL
WARNING:
Read “General Precautions” when working on the fuel system. Refer to FL-3, "
General Precautions" .
1. Check fuel level on fuel gauge. If fuel gauge indicates more than the level as shown in the figure (full or almost full), drain fuel
from fuel tank until fuel gauge indicates level as shown in the fig-
ure or below.
NOTE:
Because fuel will be spilled when removing main and sub fuel
level sensor units for the top of the fuel is above the main and
sub fuel level sensor units installation surface.

As a guide, fuel level becomes the position as shown in the
figure or below when approximately 20 (5-1/4 US gal, 4-3/8
Imp gal) of fuel are drained from fuel tank.

In a case that fuel pump does not operate, perform the follow-
ing procedure.
a. Insert hose of less than 25 mm (0.98 in) in diameter into fuel filler tube through fuel filler opening to draw fuel from fuel filler tube.
b. Disconnect fuel filler hose from fuel filler tube. Refer to FL-10, "
FUEL TANK" .
c. Insert fuel tube into fuel tank through fuel filler hose to draw fuel from fuel tank.
2. Release the fuel pressure from the fuel lines. Refer to EC-99, "
FUEL PRESSURE RELEASE" (VQ35DE)
or EC-789, "
FUEL PRESSURE RELEASE" (VK45DE).
3. Open fuel filler lid.
1. Retainer 2. Main fuel level sensor unit, fuel filter -
and fuel pump assembly 3. O-ring
4. Sub fuel level sensor unit
PBIC1585E
PBIC1575E

FL-10
FUEL TANK
Revision: 2005 July 2005 FX
FUEL TANKPFP:17202
Removal and InstallationABS005Z1
REMOVAL
WARNING:
Be sure to read “General Precautions” when working on the fuel system. Refer to FL-3, "
General Pre-
cautions" .

Drain fuel from fuel tank if necessary. Refer to FL-4, "REMOVAL" .

Perform work on level place.
1. Perform steps 2 to 7 of “REMOVAL” in “ FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY” on main and sub fuel level sensor units. Refer to FL-4, "
REMOVAL" .
2. Remove tunnel stay. Refer to RSU-5, "
REAR SUSPENSION ASSEMBLY" .
3. Remove exhaust front tube, center muffler and main muffler. Refer to EX-3, "
EXHAUST SYSTEM" .
4. Remove insulator.
5. Remove propeller shaft. Refer to PR-7, "
REAR PROPELLER SHAFT" .
6. Remove parking rear brake cables. Refer to PB-3, "
PARKING BRAKE CONTROL" .
7. Remove rear suspension assembly. Refer to RSU-5, "
REAR SUSPENSION ASSEMBLY" .
8. Remove fuel tank protector.
1. Grommet 2. Fuel filler cap 3. Clip
4. Fuel filler tube protector 5. Fuel tank mounting band 6. Fuel tank protector
7. Insulator 8. Fuel tank 9. Vent tube
10. Vent hose 11. EVAP hose 12. Vent hose
13. Fuel filler hose 14. Fuel filler tube
PBIC1580E

FUEL TANK FL-11
C
D E
F
G H
I
J
K L
M A
FL
Revision: 2005 July 2005 FX
9. Disconnect fuel filler hose, vent hose and EVAP hoses at fuel
tank side.
10. Support the lower part of fuel tank with transmission jack. CAUTION:
Support the position that fuel tank mounting bands do not
engage.
11. Remove fuel tank mounting bands.
12. Supporting with hands, descend transmission jack carefully, and remove fuel tank. CAUTION:

Make sure that all connection points have been disconnected.

Confirm there is no interference with vehicle.
13. Remove fuel filler tube protector and fuel filler tube, if necessary.
INSTALLATION
Note the following, and install in the reverse order of removal.

Surely clamp fuel hoses and insert hose to the length below.

Be sure hose clamp is not placed on swelled area of fuel tube.

Tighten fuel hose clamp so that the distance between its lugs becomes to the following.

To connect quick connector, refer to FL-7, "Quick Connector" .
INSPECTION AFTER INSTALLATION
Use the following procedure to check for fuel leaks.
1. Turn ignition switch “ON” (with engine stopped), and check connections for leakage by applying fuel pres- sure to fuel piping.
2. Start engine and rev it up and make sure there are no fuel leaks at the fuel system tube and hose connec- tions.

After removing/installing rear suspension assembly, make sure to adjust wheel alignment and then, adjust
neutral position of steering angle sensor. Refer to RSU-5, "
Wheel Alignment Inspection" and BRC-6,
"Adjustment of Steering Angle Sensor Neutral Position" .
PBIC1581E
PBIC0878E
Fuel filler hose : 35 mm (1.38 in)
The other hoses : 25 mm (0.98 in)
Fuel tank side : 8 - 12 mm (0.31 - 0.47 in)
Fuel filler tube side : 5.7 - 9.7 mm (0.224 - 0.382 in)

PRECAUTIONS GI-7
C
D E
F
G H
I
J
K L
M B
GI
Revision: 2005 July 2005 FX
Precautions for Fuel (Unleaded Premium Gasoline Required)AAS000GS
Use unleaded premium gasoline with an octane rating of at least 91 AKI (Anti-Knock Index) number (Research
octane number 96).
If unleaded premium gasoline is not available, unleaded regular gasoline with an octane rating of at least 87
AKI number (Research octane number 91) can be used, but only under the following precautions:

have the fuel tank filled only partially with unleaded regular gasoline, and fill up with unleaded premium
gasoline as soon as possible.

avoid full throttle driving and abrupt acceleration.
However, for maximum vehicle performance, the use of unleaded premium gasoline is recommended.
CAUTION:
Do not use leaded gasoline. Using leaded gasoline will damage the three way catalyst. Using a fuel
other than that specified could adversely affect the emission control devices and systems, and could
also affect the warranty coverage validity.
Precautions for Multiport Fuel Injection System or Engine Control SystemAAS000F1

Before connecting or disconnecting any harness connector for
the multiport fuel injection system or ECM:
Turn ignition switch to “OFF” position.
Disconnect negative battery terminal.
Otherwise, there may be damage to ECM.

Before disconnecting pressurized fuel line from fuel pump to
injectors, be sure to release fuel pressure.

Be careful not to jar components such as ECM and mass air
flow sensor.
Precautions for HosesAAS000F2
HOSE REMOVAL AND INSTALLATION

To prevent damage to rubber hose, do not pry off rubber hose
with tapered tool or screwdriver.

To reinstall the rubber hose securely, make sure that hose inser-
tion length and orientation is correct. (If tube is equipped with
hose stopper, insert rubber hose into tube until it butts up
against hose stopper.)
SGI787
SMA019D
SMA020D

IDX-4
ALPHABETICAL INDEX
ECTS - Wiring diagram ...................... EC-210, EC-916
Electric sunroof .................................................. RF-10
Electric throttle control actuator ........ EC-424, EC-426,
EC-1148
, EC-1150
Electric throttle control actuator (VK45DE) ..... EM-178
Electric throttle control actuator (VQ35DE) ....... EM-19
Electrical load signal circuit .............. EC-679, EC-1369
Electrical unit ..................................................... PG-76
Electrical units location ...................................... PG-70
Electronic ignition (EI) system ............. EC-33, EC-724
Engine control module (ECM) .......... EC-402, EC-1134
Engine control system diagram ....................... EC-721
Engine control system diagram and chart ......... EC-30
Engine coolant temperature sensor (ECTS) ... EC-208,
EC-220
, EC-914, EC-927
Engine coolant(VK45DE) .................................. CO-37
Engine coolant(VQ35DE) ................................. CO-11
Engine oil filter replacement ............................. MA-26
Engine oil filter replacement(VQ35DE) ............. MA-19
Engine oil precautions .......................................... GI-8
Engine oil replacement(VQ35DE) ..................... MA-18
Engine oil(VK45DE) ........................................... LU-25
Engine oil(VQ35DE) ............................................ LU-7
Engine removal(VK45DE) ............................... EM-240
Engine removal(VQ35DE) .............................. EM-112
Engine room cover(VK45DE) ......................... EM-172
ETC1 - Wiring diagram .................... EC-427, EC-1151
ETC2 - Wiring diagram .................... EC-434, EC-1158
ETC3 - Wiring diagram .................... EC-438, EC-1162
EVAP canister ...................................... EC-42, EC-733
EVAP canister purge volume control solenoid valve ....
EC-336
, EC-1069, EC-1233
EVAP canister vent control valve ...... EC-343, EC-568,
EC-1076
, EC-1241
EVAP control system (small leak) diagnosis .. EC-327,
EC-367
, EC-1061, EC-1108
EVAP control system pressure sensor ........... EC-350,
EC-353
, EC-359, EC-1083, EC-1086, EC-1092
EVAP control system purge flow monitoring diagnosis
EC-322
, EC-1056
EVAP vapor lines inspection ................. MA-21, MA-28
Evaporative emission (EVAP) system . EC-39, EC-730
Evaporator ..................................................... ATC-156
Exhaust manifold(VK45DE) ............................ EM-182
Exhaust manifold(VQ35DE) .............................. EM-26
Exhaust system ................................................... EX-3
Exhaust system inspection ..................... EX-3, MA-29
Expansion valve ............................................. ATC-157
F
F/FOG - Wiring diagram ..................................... LT-81
F/PUMP - Wiring diagram ................ EC-669, EC-1359
Final drive pre-inspection .................. FFD-20, RFD-17
Final drive removal and installation .. FFD-12, FFD-14,
RFD-14
Floor trim ............................................................. EI-39
Flow charts ......................................................... GI-27
Fluid temperature sensor (A/T) ........................ AT-136
Fluorescent leak detector ............................. ATC-158
Fog lamp, front ................................................... LT-79
Front axle ............................................ FAX-4, FAX-10
Front brake solenoid valve ................. AT-154, AT-156
Front bumper ...................................................... EI-14
Front door ............................. BL-153, BL-157, GW-76
Front fog lamp .................................................... LT-79
Front passenger air bag .................................. SRS-39
Front seat belt ...................................................... SB-3
Front seat belt pre-tensioner ..... SB-2, SRS-3, SRS-44
Front suspension .............................................. FSU-6
Front washer ...................................................... WW-4
Front wiper ......................................................... WW-4
FTTS - Wiring diagram .... EC-269, EC-274, EC-1006,
EC-1011
Fuel cut control (at no load high engine speed) EC-34,
EC-725
Fuel filter replacement ......................................... FL-4
Fuel gauge ............................................................ DI-5
Fuel injection system (Bank 1) .......... EC-986, EC-995
Fuel injection system (Bank 2) .......... EC-986, EC-995
Fuel injector and fuel tube(VK45DE) .............. EM-192
Fuel injector and fuel tube(VQ35DE) ................ EM-45
Fuel level sensor EC-385, EC-387, EC-389, EC-1117,
EC-1119
, EC-1121
Fuel line inspection .................................. FL-3, MA-25
Fuel line inspection(VQ35DE) .......................... MA-17
Fuel precautions .......................................... GI-6, GI-7
Fuel pressure check ........................... EC-99, EC-789
Fuel pressure release ......................... EC-99, EC-789
Fuel pump ....................................... EC-668, EC-1358
Fuel pump and gauge .......................................... FL-4
Fuel system ......................................................... FL-3
Fuel tank ............................................................ FL-10
Fuel tank temperature sensor .......... EC-267, EC-273,
EC-1004
, EC-1010
Fuel tank vacuum relief valve ............. EC-42, EC-733
FUELB1 - Wiring diagram .. EC-250, EC-260, EC-988,
EC-997
FUELB2 - Wiring diagram .. EC-251, EC-261, EC-989,
EC-998
Fuse .................................................................. PG-17
Fuse and fusible link box .................................. PG-83
Fusible link ........................................................ PG-17
G
Gauges ................................................................. DI-5
Glass ...................................... GW-11, GW-76, GW-80
Glove box lamp ................................... LT-156, LT-202
Grille - See Exterior ............................................ EI-22
Ground distribution ........................................... PG-31
H
H/AIM - Wiring diagram ..................................... LT-75
H/LAMP - Wiring diagram .................................. LT-11
Harness connector ............................................ PG-74
Harness layout .................................................. PG-46

ENGINE MAINTENANCE (VQ35DE ENGINE) MA-21
C
D E
F
G H
I
J
K
M A
B
MA
Revision: 2005 July 2005 FX
CAUTION:

Do not drop or shock spark plug.

Do not use a wire brush for cleaning.

If plug tip is covered with carbon, spark plug cleaner may
be used.

Checking and adjusting plug gap is not required between
change intervals.
INSTALLATION
Install in the reverse order of removal.
Checking EVAP Vapor LinesALS000GO
1. Visually inspect EVAP vapor lines for improper attachment and for cracks, damage, loose connections,
chafing and deterioration.
2. Inspect fuel tank filler cap vacuum relief valve for clogging, sticking, etc. Refer to EC-39, "
EVAPORATIVE EMISSION SYSTEM" .
Cleaner air pressure:
Less than 588 kPa (6 kg/cm
2 , 85 psi)
Cleaning time: Less than 20 seconds
SMA773C
SMA806CA
: 24.5 N·m (2.5 kg-m, 18 ft-lb)