2006 INFINITI FX35 air suspension

EM-244
[VK45DE]
ENGINE ASSEMBLY
Revision: 2006 December 2006 FX35/FX45
Preparation
1. Release fuel pressure. Refer to EC-746, "FUEL PRESSURE RELEASE" .
2. Drain engine coolant from radiator. Refer to CO-38, "
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-173, "ENGINE ROOM COVER" .

Front and rear engine undercover

Air duct (inlet), air duct and air cleaner case assembly; Refer to EM-177, "AIR CLEANER AND AIR
DUCT" .

Drive belts; Refer to EM-174, "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-137, "
REFRIGERANT LINES" .
6. Remove A/C piping from A/C compressor, and temporarily fasten it on vehicle with a rope. Refer to AT C -
139, "Components" .
Engine Room RH
1. Disconnect fuel feed hose and EVAP hose. Refer to EM-194, "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-31, "
Removal and Installation (VK45DE Models)" .
3. Remove A/T fluid cooler tube. Refer to AT- 2 6 6 , "
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 2 9 , "
SHIFT CONTROL SYSTEM" .

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING FAX-9
[AWD]
C E F
G H
I
J
K L
M A
B
FA X
Revision: 2006 December 2006 FX35/FX45
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartNDS000C3
Use chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
× : Applicable Reference page
—
FAX-15—
FAX-10—
FAX-10
NVH in FFD section
NVH in FAX and FSU section
Refer to FRONT AXLE in this chart. NVH in WT section
NVH in WT section
Refer to DRIVE SHAFT in this chart. NVH in BR section
NVH in PS section
Possible cause and SUSPECTED PARTS
Excessive joint angle
Joint sliding resistance
Imbalance
Improper installation, looseness
Parts interference
Wheel bearing damage
FRONT DIFFERENTIAL
FRONT AXLE AND FRONT SUSPENSION
FRONT AXLE
TIRES
ROAD WHEEL
DRIVE SHAFT
BRAKES
STEERING
Symptom DRIVE
SHAFT Noise
×× ×××××× ××
Shake ×× ×××××××
FRONT
AXLE Noise
×××× ××××××
Shake ××× ××××××
Vibration ××× ××××
Shimmy ×× ××× ××
Judder ××××××
Poor quality ride or handling ×× ×××

FFD-6
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
Revision: 2006 December 2006 FX35/FX45
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartNDS000B6
Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
× : Applicable Reference page
Refer to
FFD-28, "
INSPECTION AFTER DISASSEMBLY
" .
Refer to FFD-21, "
Tooth Contact
" .
Refer to FFD-28, "
INSPECTION AFTER DISASSEMBLY
" .
Refer to FFD-23, "
Backlash
" .
Refer to FFD-23, "
Companion Flange Runout
" .
Refer to FFD-8, "
Checking Differential Gear Oil
" .
NVH in PR section.
NVH in FAX, RAX, FSU and RSU sections.
NVH in WT section.
NVH in WT section.
NVH in FAX and RAX section.
NVH in BR section.
NVH in PS section.
Possible cause and SUSPECTED PARTS
Gear tooth rough
Gear contact improper
Tooth surfaces worn
Backlash incorrect
Companion flange excessive runout
Gear oil improper
PROPELLER SHAFT
AXLE AND SUSPENSION
TIRES
ROAD WHEEL
DRIVE SHAFT
BRAKES
STEERING
Symptom Noise ×××××××××××××

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING FSU-5
C
D
F
G H
I
J
K L
M A
B
FSU
Revision: 2006 December 2006 FX35/FX45
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartNES000FN
Use chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
× : Applicable Reference page
FSU-8FSU-12
—
—
—
FSU-8FSU-6FSU-16
NVH in PR section
NVH in RFD section
NVH in FAX and FSU section
NVH in WT section
NVH in WT section
NVH in FAX section NVH in BR section NVH in PS section
Possible cause and SUSPECTED PARTS
Improper installation, looseness
Strut deformation, damage or deflection
Bushing or mounting deterioration
Parts interference
Spring fatigue
Suspension looseness
Incorrect wheel alignment
Stabilizer bar fatigue
PROPELLER SHAFT (For AWD models)
DIFFERENTIAL (For AWD models)
FRONT AXLE AND FRONT SUSPENSION
TIRES
ROAD WHEEL
DRIVE SHAFT (For AWD models)
BRAKES
STEERING
Symptom FRONT SUSPENSION Noise
××××× × ××× ×××××
Shake ×××× × × × ×××××
Vibration ××××× × ×× × ×
Shimmy ×××× × ××× ××
Judder ××× ××× ××
Poor quality ride or han-
dling ××××× ×× ×××

FSU-6
FRONT SUSPENSION ASSEMBLY
Revision: 2006 December 2006 FX35/FX45
FRONT SUSPENSION ASSEMBLYPFP:54010
On-Vehicle Inspection and ServiceNES000I3
Make sure the mounting conditions (looseness, back lash) of each component and component conditions
(wear, damage) are normal.
INSPECTION LOWER BALL JOINT END PLAY
1. Set front wheels in a straight-ahead position. Do not depress brake pedal.
2. Place an iron bar or similar tool between transverse link and steering knuckle.
3. Measure axial end play by prying it up and down.
CAUTION:
Be careful not to damage ball joint boot.
STRUT INSPECTION

Check strut for oil leakage, damage and replace if there are. Refer to FSU-11, "COIL SPRING AND
STRUT" .
Wheel Alignment InspectionNES000I4
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

Check tires for improper air pressure and wear.

Check road wheels for runout.

Check wheel bearing axial end play.

Check ball joint axial end play of compression rod, upper link, and steering knuckle

Check shock absorber operation.

Check each mounting part of axle and suspension for looseness and deformation.

Check each link, rod and member for cracks, deformation and other damage.

Check vehicle posture.
GENERAL INFORMATION AND RECOMMENDATIONS

A four-wheel thrust alignment should be performed.
–This type of alignment is recommended for any NISSAN/INFINITI vehicle.
–The four-wheel “thrust” process helps ensure that the vehicle is properly aligned and the steering wheel is
centered.
–The alignment rack itself should be capable of accepting any NISSAN/INFINITI vehicle.
–The rack should be checked to ensure that it is level.

Make sure the machine is properly calibrated.
–Your alignment equipment should be regularly calibrated in order to give correct information.
–Check with the manufacturer of your specific equipment for their recommended Service/Calibration
Schedule. Axial end play : 0 mm (0 in)

IDX-4
ALPHABETICAL INDEX
Electrical load signal circuit .............. EC-626, EC-1305
Electrical unit ..................................................... PG-75
Electrical units location ...................................... PG-68
Electronic ignition (EI) system ............. EC-33, EC-693
Engine control circuit diagram ......................... EC-108
Engine control component parts location ......... EC-101
Engine control module (ECM) .......... EC-481, EC-1146
Engine control system diagram ........... EC-30, EC-690
Engine coolant temperature sensor (ECTS) ... EC-210,
EC-222
, EC-879, EC-892
Engine coolant(VK45DE) .................................. CO-38
Engine coolant(VQ35DE) ................................. CO-11
Engine fail-safe system ...................................... EC-96
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-243
Engine removal(VQ35DE) .............................. EM-113
Engine room cover(VK45DE) ......................... EM-173
ETC1 - Wiring diagram .................... EC-563, EC-1241
ETC2 - Wiring diagram .................... EC-558, EC-1236
ETC3 - Wiring diagram .................... EC-569, EC-1248
EVAP canister ...................................... EC-42, EC-702
EVAP canister purge volume control solenoid valve ....
EC-397
, EC-405, EC-1063, EC-1071
EVAP canister vent control valve ...... EC-412, EC-419,
EC-1078
, EC-1085
EVAP control system (small leak) diagnosis .. EC-388,
EC-450
, EC-1054, EC-1116
EVAP control system pressure sensor ........... EC-425,
EC-428
, EC-434, EC-1091, EC-1094, EC-1100
EVAP control system purge flow monitoring diagnosis
EC-383
, EC-1049
EVAP vapor lines inspection ................. MA-21, MA-28
Evaporative emission (EVAP) system . EC-39, EC-699
Evaporator ..................................................... ATC-154
Exhaust manifold(VK45DE) ............................ EM-183
Exhaust manifold(VQ35DE) .............................. EM-26
Exhaust system ................................................... EX-3
Exhaust system inspection ..................... EX-3, MA-29
Expansion valve ............................................. ATC-155
F
F/PUMP - Wiring diagram ................ EC-636
, EC-1315
Final drive pre-inspection .................. FFD-20, RFD-19
Final drive removal and installation .. FFD-13, FFD-15,
RFD-16
Floor trim ............................................................. EI-40
Flow charts ......................................................... GI-28
Fluid temperature sensor (A/T) ........................ AT-134
Fluorescent leak detector .............................. ATC-156
Freeze frame data ............................... EC-59, EC-720
Front axle ................................ FAX-4, FAX-10, RAX-5
Front brake solenoid valve ................. AT-150, AT-152
Front bumper ...................................................... EI-14
Front door ............................. BL-148, BL-152, GW-58
Front passenger air bag .................................. SRS-42
Front seat belt ...................................................... SB-4
Front seat belt pre-tensioner ..... SB-2, SRS-3, SRS-48
Front suspension .............................................. FSU-6
FTS - Wiring diagram ....................................... AT-135
FTTS - Wiring diagram ...... EC-330, EC-335, EC-999,
EC-1004
Fuel cut control (at no load high engine speed) EC-34,
EC-694
Fuel filter replacement ......................................... FL-4
Fuel gauge ............................................................ DI-5
Fuel injection system (Bank 1) ......... EC-305, EC-317,
EC-975
, EC-986
Fuel injection system (Bank 2) ......... EC-305, EC-317,
EC-975
, EC-986
Fuel injector ..................................................... EC-628
Fuel injector and fuel tube(VK45DE) .............. EM-194
Fuel injector and fuel tube(VQ35DE) ................ EM-45
Fuel level sensor EC-460, EC-462, EC-464, EC-1125,
EC-1127
, EC-1129
Fuel line inspection .................................. FL-3, MA-25
Fuel line inspection(VQ35DE) .......................... MA-17
Fuel precautions .......................................... GI-6, GI-7
Fuel pressure check ........................... EC-86, EC-746
Fuel pressure release ......................... EC-86, EC-746
Fuel pump ....................................... EC-635, EC-1314
Fuel pump and gauge .......................................... FL-4
Fuel system ......................................................... FL-3
Fuel tank ............................................................ FL-10
Fuel tank temperature sensor .......... EC-328, EC-334,
EC-997
, EC-1003
Fuel tank vacuum relief valve ............. EC-42, EC-702
FUELB1 - Wiring diagram .. EC-307, EC-319, EC-977,
EC-988
FUELB2 - Wiring diagram .. EC-309, EC-321, EC-979,
EC-990
Fuse .................................................................. PG-16
Fuse and fusible link box .................................. PG-82
Fusible link ........................................................ PG-16
G
Gauges ................................................................. DI-5
Generic scan tool (GST) .................................. EC-130
Glass ...................................... GW-11, GW-58, GW-62
Grille - See Exterior ............................................ EI-22
Ground distribution ........................................... PG-29
H
Harness connector ............................................ PG-72
Harness layout .................................................. PG-44
Headlining - See Roof trim .................................. EI-42
Heated oxygen sensor 2 (bank 1) .... EC-270, EC-281,
EC-294
, EC-940, EC-951, EC-964
Heated oxygen sensor 2 (bank 2) .... EC-270, EC-281,
EC-294
, EC-940, EC-951, EC-964
Heated oxygen sensor 2 heater (bank 1) ....... EC-173,

IDX-7
A
C
D E
F
G H
I
J
K L
B
IDX
ALPHABETICAL INDEX
Removal and installation (A/T) ...........
AT-266, AT-269
Removal and installation (Transfer) .................... TF-44
Revolution sensor (A/T) ...................... AT-118, AT-259
Rocker cover(VK45DE) ................................... EM-200
Rocker cover(VQ35DE) ..................................... EM-51
RP/SEN - Wiring diagram ................ EC-663, EC-1342
S
SAE J1979 - Service $01 - 09 ........... EC-130
, EC-714
Seal - See Exterior .............................................. EI-27
Seat belt inspection ............................................. SB-7
Seat belt, front ..................................................... SB-4
Seat, rear ......................................................... SE-105
Self-diagnosis (Transfer) .................................... TF-22
Self-diagnostic results ....................................... EC-71
SEN/PW - Wiring diagram ............... EC-485, EC-1150
SHIFT - Wiring diagram ................................... AT-233
Shift lock system .............................................. AT-232
Shift schedule .................................................. AT-359
Shock absorber (rear) ....................................... RSU-9
Side air bag (satellite) sensor .......................... SRS-47
Side curtain air bag .......................................... SRS-44
Side trim .............................................................. EI-37
SMJ (super multiple junction) ............................ PG-77
SNOW MODE SW ........................... EC-667, EC-1346
SNOWSW - Wiring diagram ............ EC-668, EC-1347
Spark plug replacement ..................................... MA-27
Spark plug replacement(VQ35DE) .................... MA-20
Spark plug(VK45DE) ....................................... EM-192
Spark plug(VQ35DE) ......................................... EM-43
Specification value ............................. EC-138, EC-801
Speedometer ........................................................ DI-5
Spiral cable ...................................................... SRS-40
SROOF - Wiring diagram ..................... BL-166, RF-13
SRS - See Supplemental Restraint System ...... SRS-5
SRS - Wiring diagram ...................................... SRS-12
SRS Trouble diagnoses ..................................... SRS-8
Stabilizer bar (rear) ......................................... RSU-16
Stall test (A/T) .................................................... AT-53
Standardized relay ............................................. PG-79
START - Wiring diagram ..................................... SC-9
Starter .................................................................. SC-8
Starting system .................................................... SC-8
Steering gear and linkage inspection ................ MA-36
Steering linkage ................................................. PS-17
Steering wheel and column ................... PS-10, PS-12
Steering wheel turning force .............................. PS-10
Stop lamp switch ............................. EC-551, EC-1229
STSIG - Wiring diagram .................................. AT-108
Sun roof, electric ................................................ RF-10
Sunload sensor ............................. ATC-109, ATC-118
Sunroof .................................................. RF-10, RF-23
Supplemental Restraint System ........................ SRS-5
Supplemental restraint system - Wiring diagram ..........
SRS-12
Suspension ........................................................ MA-37
Symbols and abbreviations ..................... GI-11, GI-24
Symptom matrix chart ........................................ EC-97
System readiness test (SRT) code ...... EC-60, EC-720
T
Tachometer ........................................................... DI-5
TCM circuit diagram ........................................... AT-52
TCM inspection table ......................................... AT-89
Thermostat(VK45DE) ....................................... CO-53
Thermostat(VQ35DE) ....................................... CO-27
Three way catalyst function (Bank 1) EC-377, EC-1044
Three way catalyst function (Bank 2) EC-377, EC-1044
Three way catalyst precautions ............................ GI-5
Three way catalyst(VK45DE) .......................... EM-183
Three way catalyst(VQ35DE) ........................... EM-26
Throttle control motor ....................... EC-568, EC-1247
Throttle control motor relay .............. EC-556, EC-1234
Throttle position sensor (TPS) .......... EC-215, EC-339,
EC-510
, EC-512, EC-589, EC-885, EC-1008, EC-1183,
EC-1185
, EC-1268
Throttle valve closed position learning . EC-84, EC-744
Tie-rod ............................................................... PS-17
Timing chain(VK45DE) ................................... EM-203
Timing chain(VQ35DE) ..................................... EM-64
Tire rotation ............................................. WT-9, MA-35
Top tether strap child restraint ........................... SB-11
Torque converter installation AT-267, AT-268, AT-272
Torque convertor clutch solenoid valve AT-125, AT-127
TPS1 - Wiring diagram .................... EC-341, EC-1010
TPS2 - Wiring diagram ...................... EC-217, EC-887
TPS3 - Wiring diagram .................... EC-591, EC-1270
Traction control system circuit (engine) .......... EC-495,
EC-496
Transfer control unit inspection table ................. TF-20
Transverse link (front) ...................................... FSU-14
TRNSCV - Wiring diagram ............................... BL-227
Trouble diagnoses .............................................. GI-12
Two trip detection logic ........................ EC-54, EC-714
Tyre pressure monitoring system - trouble diagnoses ..
WT-13
Tyre pressure monitoring system - wiring diagram .......
WT-14
U
Unified meter and A/C amp. ............................... DI-28
V
Vacuum hose (brake system) ............................ BR-17
Vacuum hose drawing (Engine control) ........... EC-107
Valve clearance(VK45DE) .............................. EM-222
Valve clearance(VQ35DE) ................................ EM-93
Valve guide ..................................................... EM-108
Valve guide(VK45DE) ..................................... EM-239
Valve lifter ......................................................... EM-87
Valve seat(VK45DE) ....................................... EM-241
Valve seat(VQ35DE) ...................................... EM-110
Valve spring(VK45DE) .................................... EM-242
Valve spring(VQ35DE) ................................... EM-111

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING PR-3
C E F
G H
I
J
K L
M A
B
PR
Revision: 2006 December 2006 FX35/FX45
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartNDS000AS
Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
× : Applicable
Reference page
Front
PR-4—
—
—
—
PR-4PR-5
NVH in FFD and RFD section
NVH in FAX, RAX, FSU, and RSU section
NVH in WT section
NVH in WT section
NVH in RAX section
NVH in BR section
NVH in PS section
RearPR-7PR-11—
PR-8—
PR-7PR-10
Possible cause and SUSPECTED PARTS
Uneven rotating torque
Center bearing improper installation
Excessive center bearing axial end play
Center bearing mounting (insulator) cracks, damage or deterioration
Excessive joint angle
Rotation imbalance
Excessive runout
DIFFERENTIAL
AXLE AND SUSPENSION
TIRES
ROAD WHEEL
DRIVE SHAFT
BRAKES
STEERING
Symptom Noise
××××××××××××××
Shake × × ××××××
Vibration ××××××× ×× × ×