2004 INFINITI FX35 check engine

FL-8
FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
Revision: 2004 November 2004 FX35/FX45
1. Turn ignition switch “ON” (with engine stopped), then check connections for leaks by applying fuel pres-
sure to fuel piping.
2. Start engine and let it idle and make sure there are no fuel leaks at the fuel system connections.
Disassembly and AssemblyABS005Z0
CAUTION:
Sub fuel level sensor unit cannot be disassembled and should be replaced as a unit.
DISASSEMBLY
Remove fuel level sensor unit as follows.
1. Disconnect harness connector.

Hold connector by fingers and pull it out, because there is no
stopper release tab.
2. Using suitable tool, pull up tabs points as shown in the figure
(two points) to release the lock.
CAUTION:
Be careful not to damage it.
3. After fixing tabs are disengaged, slide fuel level sensor unit out
in direction shown by the arrow.
CAUTION:
Do not disassemble fuel filter and fuel pump assembly.
1. Fuel level sensor unit 2. Fuel filter and fuel pump assembly
PBIC1081E
PBIC1078E
PBIC1654E
PBIC1080E

FUEL TANK
FL-11
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Revision: 2004 November 2004 FX35/FX45
9. Disconnect fuel filler hose, vent hose and EVAP hoses at fuel
tank side.
10. Remove fuel tank mounting band bolts while supporting fuel
tank.
11. Remove fuel tank.
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 clamps of fuel filler hose so that the remaining length of screw thread becomes 8 to12 mm (0.31
to 0.47 in) on tank side and 5.7 to 9.7 mm (0.224 to 0.382 in) on fuel filler tube side.

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 check for fuel leaks at the fuel system tube and hose connections.

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)

FSU-2
PRECAUTIONS
Revision: 2004 November 2004 FX35/FX45
PRECAUTIONSPFP:00001
CautionAES000MZ

When installing rubber bushings, final tightening must be carried out under unladen conditions with tires
on ground. Oil will shorten the life of rubber bushings. Be sure to wipe off any spilled oil.

Unladen conditions mean that fuel, engine coolant and lubricant are full. Spare tire, jack, hand tools and
mats are in designated positions.

After servicing suspension parts, be sure to check wheel alignment.

Caulking nuts are not reusable. Always use new ones when installing. Since new caulking nuts are pre-
oiled, tighten as they are.

Avoid burden to front cross bar.

FSU-6
FRONT SUSPENSION ASSEMBLY
Revision: 2004 November 2004 FX35/FX45
FRONT SUSPENSION ASSEMBLYPFP:54010
On-Vehicle Inspection and ServiceAES000N3
Make sure the mounting conditions (looseness, back lash) of each component and component statues (wear,
damage) are normal.
INSPECTION OF TRANSVERSE LINK BALL JOINT END PLAY
1. Set front wheels in a straight-ahead position. Do not depress brake pedal.
2. Measure axial end play by installing and moving up/down between transverse link and steering knuckle
with an iron pry bar or something similar.
CAUTION:
Be careful not to damage ball joint boot.
STRUT INSPECTION
Check strut for oil leakage, damage and replace if necessary. Refer to FSU-11, "COIL SPRING AND STRUT" .
Wheel Alignment InspectionAES000N4
DESCRIPTION
Measure wheel alignment under unladen conditions.
NOTE:
Unladen conditions mean that fuel, engine coolant, and lubricant are full. Spare tire, jack, hand tools and mats
are designated positions.
PRELIMINARY CHECK
1. Check tires for improper air pressure and wear.
2. Check road wheels for runout.
3. Check wheel bearing axial end play.
4. Check transverse link ball joint axial end play.
5. Check strut operation.
6. Check each mounting part of axle and suspension for looseness and deformation.
7. Check each link, rod and member for cracks, deformation and other damage.
8. Check vehicle posture.
INSPECTION OF CAMBER, CASTER AND KINGPIN INCLINATION ANGLES

Camber, caster, kingpin inclination angles cannot be adjusted.

Before inspection, mount front wheels onto turning radius gauge. Mount rear wheels onto a stand that has
same height so vehicle will remain horizontal.
Using a CCK Gauge
Install CCK gauge attachment (SST: KV991040S0) as following procedure in wheel, then measure wheel
alignment.
1. Remove wheel nuts (3), and install a guide bolt to hub bolt.
2. Screw adapter into plate body until it contacts body tightly.
3. Screw center plate into plate.
4. Insert plate on guide bolt. Put spring in, and then evenly screw
both guide bolt nut. When fastening guide bolt nut, do not com-
pletely compress spring.Axial end play : 0 mm (0 in)
SEIA0240E

FSU-10
FRONT SUSPENSION ASSEMBLY
Revision: 2004 November 2004 FX35/FX45
16. Remove stabilizer connecting rod upper nut with power tool,
separate stabilizer connecting rod and strut assembly.
17. Remove mounting nuts between engine mounting insulator and
front suspension member.
18. Remove mounting bolts which are at the back of transverse link
(mounting part with body) with power tool, separate transverse
link.
19. Remove mounting nuts between front suspension member and
body with power tool.
20. Move jack down slowly to remove front suspension member,
transverse link, stabilizer bar, drive shaft (For AWD models) and
steering knuckle from vehicle as a unit.
21. Remove transverse link from steering knuckle. Refer to FSU-14,
"TRANSVERSE LINK" .
INSTALLATION

Refer to FSU-8, "Components" for tightening torque. Install in the reverse order of removal.
NOTE:
Refer to component parts location and do not reuse non-reusable parts.

After removing/installing or replacing suspension components and steering components, check wheel
alignment. Refer to FSU-6, "
Wheel Alignment Inspection" .

After adjusting wheel alignment, adjust neutral position of steering angle sensor. Refer to BRC-6, "Adjust-
ment of Steering Angle Sensor Neutral Position" .

Check the following item after service.
–Installation condition of wheel sensor harness.
SEIA0330E
SEIA0331E

FRONT SUSPENSION MEMBER
FSU-17
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Revision: 2004 November 2004 FX35/FX45
FRONT SUSPENSION MEMBERPFP:54401
Removal and InstallationAES000NB
REMOVAL
1. Set engine slinger to engine, then suspend an engine.
2. Remove tire from vehicle with power tool.
3. Remove undercover with power tool.
4. Remove front cross bar.
5. Remove mounting bolts which are at the back of transverse link
(mounting part with body) with power tool, separate transverse
link.
6. Remove mounting bolts which are at the front of transverse link
with power tool, separate transverse link.
7. Remove steering hydraulic piping bracket from front suspension
member. Refer to PS-41, "
HYDRAULIC LINE" .
8. Remove mounting bolts of steering gear with power tool, then
hang steering gear on vehicle. Refer to PS-19, "
POWER
STEERING GEAR AND LINKAGE" .
9. Remove stabilizer bar from front suspension member and stabi-
lizer connecting rod lower side with power tool.
10. Remove mounting nuts between engine mounting insulator and front suspension member.
11. Remove mounting nuts between front suspension member and body with power tool.
12. Move jack down slowly to remove front suspension member from vehicle.
INSPECTION AFTER REMOVAL
Check front suspension member for deformation, cracks, or any other damage. Replace if necessary.
INSTALLATION

Refer to FSU-8, "Components" for tightening torque. Install in the reverse order of removal.
NOTE:
Refer to component parts location and do not reuse non-reusable parts.

After removing/installing or replacing suspension components and steering components, check wheel
alignment. Refer to FSU-6, "
Wheel Alignment Inspection" .

After adjusting wheel alignment, adjust neutral position of steering angle sensor. Refer to BRC-6, "Adjust-
ment of Steering Angle Sensor Neutral Position" .
SEIA0331E

GI-1
GENERAL INFORMATION
A GENERAL INFORMATION
CONTENTS
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SECTION GI
Revision: 2004 November 2004 FX35/FX45
GENERAL INFORMATION
PRECAUTIONS .......................................................... 3
Description ............................................................... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 3
Precautions for NVIS/IVIS (NISSAN/INFINITI
VEHICLE IMMOBILIZER SYSTEM - NATS) (If
Equipped) ................................................................. 3
Precautions Necessary for Steering Wheel Rotation
After Battery Disconnect .......................................... 4
OPERATION PROCEDURE ................................. 4
General Precautions ................................................ 4
Precautions for Three Way Catalyst ......................... 6
Precautions for Fuel (Unleaded Premium Gasoline
Recommended) ........................................................ 6
Precautions for Fuel (Unleaded Premium Gasoline
Required) ................................................................. 7
Precautions for Multiport Fuel Injection System or
Engine Control System ............................................ 7
Precautions for Hoses .............................................. 7
HOSE REMOVAL AND INSTALLATION ............... 7
HOSE CLAMPING ................................................ 8
Precautions for Engine Oils ...................................... 8
HEALTH PROTECTION PRECAUTIONS ............. 8
ENVIRONMENTAL PROTECTION PRECAU-
TIONS ................................................................... 8
Precautions for Air Conditioning ............................... 8
HOW TO USE THIS MANUAL ................................... 9
Description ............................................................... 9
Terms ....................................................................... 9
Units ......................................................................... 9
Contents ................................................................... 9
Components ........................................................... 10
SYMBOLS ........................................................... 10
How to Follow Trouble Diagnoses ........................... 11
DESCRIPTION ..................................................... 11
HOW TO FOLLOW TEST GROUPS IN TROU-
BLE DIAGNOSES ................................................ 11
HARNESS WIRE COLOR AND CONNECTOR
NUMBER INDICATION ....................................... 12KEY TO SYMBOLS SIGNIFYING MEASURE-
MENTS OR PROCEDURES ............................... 13
How to Read Wiring Diagrams ............................... 15
CONNECTOR SYMBOLS ................................... 15
SAMPLE/WIRING DIAGRAM - EXAMPL - .......... 16
DESCRIPTION .................................................... 17
Abbreviations .......................................................... 23
SERVICE INFORMATION FOR ELECTRICAL INCI-
DENT ......................................................................... 24
How to Check Terminal ........................................... 24
CONNECTOR AND TERMINAL PIN KIT ............ 24
HOW TO PROBE CONNECTORS ...................... 24
How to Perform Efficient Diagnosis for an Electrical
Incident ................................................................... 27
WORK FLOW ...................................................... 27
INCIDENT SIMULATION TESTS ........................ 27
CIRCUIT INSPECTION ....................................... 30
Control Units and Electrical Parts ........................... 35
PRECAUTIONS .................................................. 35
CONSULT-II CHECKING SYSTEM .......................... 37
Description .............................................................. 37
Function and System Application ........................... 37
Nickel Metal Hydride Battery Replacement ............ 38
Checking Equipment .............................................. 38
CONSULT-II Start Procedure .................................. 38
CONSULT-II Data Link Connector (DLC) Circuit .... 40
INSPECTION PROCEDURE .............................. 41
LIFTING POINT ......................................................... 42
Special Service Tools ............................................. 42
Garage Jack and Safety Stand ............................... 42
2-Pole Lift ............................................................... 43
Board-On Lift .......................................................... 44
TOW TRUCK TOWING ............................................. 45
Tow Truck Towing ................................................... 45
2WD MODELS .................................................... 45
AWD MODELS .................................................... 46
Vehicle Recovery (Freeing a Stuck Vehicle) ........... 46
AUTOMATIC TRANSMISSION ........................... 46
TIGHTENING TORQUE OF STANDARD BOLTS .... 47
Tightening Torque Table ......................................... 47

GI-4
PRECAUTIONS
Revision: 2004 November 2004 FX35/FX45
Precautions Necessary for Steering Wheel Rotation After Battery DisconnectAAS000OH
NOTE:

This Procedure is applied only to models with Intelligent Key system and NVIS/IVIS (NISSAN/INFINITI
VEHICLE IMMOBILIZER SYSTEM - NATS).

Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″LOCK″ position.

Always use CONSULT-II to perform self-diagnosis as a part of each function inspection after finishing
work. If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NVIS/IVIS, an electrically controlled steering lock
mechanism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4. Perform the necessary repair operation.
5. When the repair work is completed, return the ignition switch to the ″LOCK″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of all control units using CONSULT-II.
General PrecautionsAAS000EY

Do not operate the engine for an extended period of time without
proper exhaust ventilation.
Keep the work area well ventilated and free of any inflammable
materials. Special care should be taken when handling any
inflammable or poisonous materials, such as gasoline, refriger-
ant gas, etc. When working in a pit or other enclosed area, be
sure to properly ventilate the area before working with hazard-
ous materials.
Do not smoke while working on the vehicle.

Before jacking up the vehicle, apply wheel chocks or other tire
blocks to the wheels to prevent the vehicle from moving. After
jacking up the vehicle, support the vehicle weight with safety
stands at the points designated for proper lifting before working
on the vehicle.
These operations should be done on a level surface.

When removing a heavy component such as the engine or tran-
saxle/transmission, be careful not to lose your balance and drop
them. Also, do not allow them to strike adjacent parts, especially
the brake tubes and master cylinder.
SGI285
SGI231