2006 INFINITI FX35 removal

STEERING ANGLE SENSOR BRC-61
[VDC/TCS/ABS]
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BRC
Revision: 2006 December 2006 FX35/FX45
STEERING ANGLE SENSORPFP:25554
Removal and InstallationNFS000O8
REMOVAL
1. Remove spiral cable assembly. Refer to SRS-40, "SPIRAL CABLE" .
2. Remove steering angle sensor from spiral cable assembly.
INSTALLATION
Installation is the reverse order of removal.
CAUTION:
After work, make sure to adjust neutral position of steering angle sensor. Refer to BRC-6, "
Adjustment
of Steering Angle Sensor Neutral Position" .
SFIA1404E

CO-1
ENGINE COOLING SYSTEM
B ENGINE
CONTENTS
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SECTION CO
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CO
Revision: 2006 December 2006 FX35/FX45
ENGINE COOLING SYSTEM
VQ35DE
PRECAUTIONS ..................................................... ..... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ..... 3
Precautions for Liquid Gasket ............................. ..... 3
REMOVAL OF LIQUID GASKET SEALING ..... ..... 3
LIQUID GASKET APPLICATION PROCEDURE ..... 3
PREPARATION ...................................................... ..... 5
Special Service Tools .......................................... ..... 5
Commercial Service Tools ................................... ..... 6
OVERHEATING CAUSE ANALYSIS ..................... ..... 7
Troubleshooting Chart ......................................... ..... 7
COOLING SYSTEM ............................................... ..... 9
Cooling Circuit ..................................................... ..... 9
System Chart ...................................................... ... 10
ENGINE COOLANT ............................................... ....11
Inspection ............................................................ .... 11
LEVEL CHECK ................................................ .... 11
LEAK CHECK .................................................. .... 11
Changing Engine Coolant ................................... .... 11
DRAINING ENGINE COOLANT ...................... .... 11
REFILLING ENGINE COOLANT ..................... ... 12
FLUSHING COOLING SYSTEM ...................... ... 13
RADIATOR ............................................................. ... 14
Components ........................................................ ... 14
Removal and Installation ..................................... ... 14
REMOVAL ........................................................ ... 14
INSTALLATION ................................................ ... 15
INSPECTION AFTER INSTALLATION ............ ... 15
Checking Radiator Cap ....................................... ... 15
Checking Radiator ............................................... ... 16
RADIATOR (ALUMINUM TYPE) ........................... ... 17
Components ........................................................ ... 17
Disassembly and Assembly ................................ ... 17
PREPARATION ................................................ ... 17
DISASSEMBLY ................................................ ... 17
ASSEMBLY ...................................................... ... 18
INSPECTION ................................................... ... 20 COOLING FAN .......................................................
... 21
Components ........................................................ ... 21
Removal and Installation ..................................... ... 21
REMOVAL ........................................................ ... 21
INSTALLATION ................................................ ... 21
INSPECTION AFTER INSTALLATION ............. ... 21
Disassembly and Assembly ................................. ... 21
DISASSEMBLY ................................................ ... 21
INSPECTION AFTER DISASSEMBLY ............. ... 21
ASSEMBLY ...................................................... ... 21
WATER PUMP ....................................................... ... 22
Components ........................................................ ... 22
Removal and Installation ..................................... ... 22
REMOVAL ........................................................ ... 22
INSPECTION AFTER REMOVAL .................... ... 24
INSTALLATION ................................................ ... 24
INSPECTION AFTER INSTALLATION ............. ... 26
WATER INLET AND THERMOSTAT ASSEMBLY . ... 27
Components ........................................................ ... 27
Removal and Installation ..................................... ... 27
REMOVAL ........................................................ ... 27
INSPECTION AFTER REMOVAL .................... ... 28
INSTALLATION ................................................ ... 28
INSPECTION AFTER INSTALLATION ............. ... 28
WATER OUTLET AND WATER PIPING ................ ... 29
Components ........................................................ ... 29
Removal and Installation ..................................... ... 29
REMOVAL ........................................................ ... 29
INSTALLATION ................................................ ... 30
INSPECTION AFTER INSTALLATION ............. ... 30
SERVICE DATA AND SPECIFICATIONS (SDS) ... ... 31
Standard and Limit ............................................... ... 31
ENGINE COOLANT CAPACITY (APPROXI-
MATE) ............................................................... ... 31
RADIATOR ....................................................... ... 31
THERMOSTAT ................................................. ... 31

CO-2Revision: 2006 December 2006 FX35/FX45
VK45DE
PRECAUTIONS ...................................................... ... 32
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .............................................................. ... 32
PREPARATION ...................................................... ... 33
Special Service Tools .......................................... ... 33
Commercial Service Tools ................................... ... 33
OVERHEATING CAUSE ANALYSIS ..................... ... 34
Troubleshooting Chart ......................................... ... 34
COOLING SYSTEM ............................................... ... 36
Cooling Circuit ..................................................... ... 36
System Chart ....................................................... ... 37
ENGINE COOLANT ............................................... ... 38
Inspection ............................................................ ... 38
LEVEL CHECK ................................................. ... 38
LEAK CHECK ................................................... ... 38
Changing Engine Coolant .................................... ... 38
DRAINING ENGINE COOLANT ....................... ... 38
REFILLING ENGINE COOLANT ...................... ... 39
FLUSHING COOLING SYSTEM ...................... ... 40
RADIATOR ............................................................. ... 41
Components ........................................................ ... 41
Removal and Installation ..................................... ... 41
REMOVAL ........................................................ ... 41
INSTALLATION ................................................. ... 43
INSPECTION AFTER INSTALLATION ............. ... 43
Checking Radiator Cap ....................................... ... 43
Checking Radiator ............................................... ... 44
RADIATOR (ALUMINUM TYPE) ............................ ... 45
Components ........................................................ ... 45
Disassembly and Assembly ................................. ... 45
PREPARATION ................................................ ... 45
DISASSEMBLY ................................................ ... 45
ASSEMBLY ...................................................... ... 46
INSPECTION .................................................... ... 48 COOLING FAN .......................................................
... 49
Components (Crankshaft Driven type) ................. ... 49
Removal and Installation ...................................... ... 49
REMOVAL ......................................................... ... 49
INSPECTION AFTER REMOVAL ..................... ... 49
INSTALLATION ................................................. ... 49
Components (Motor Driven Type) ........................ ... 50
Removal and Installation ...................................... ... 50
REMOVAL ......................................................... ... 50
INSTALLATION ................................................. ... 50
Disassembly and Assembly (Motor Driven Type) ... 50 DISASSEMBLY ................................................. ... 50
INSPECTION AFTER DISASSEMBLY ............. ... 50
ASSEMBLY ....................................................... ... 50
WATER PUMP ........................................................ ... 51
Components ......................................................... ... 51
Removal and Installation ...................................... ... 51
REMOVAL ......................................................... ... 51
INSPECTION AFTER REMOVAL ..................... ... 52
INSTALLATION ................................................. ... 52
INSPECTION AFTER INSTALLATION ............. ... 52
THERMOSTAT AND WATER CONTROL VALVE .. ... 53
Components ......................................................... ... 53
Removal and Installation ...................................... ... 54
REMOVAL ......................................................... ... 54
INSPECTION AFTER REMOVAL ..................... ... 54
INSTALLATION ................................................. ... 54
INSPECTION AFTER INSTALLATION ............. ... 55
SERVICE DATA AND SPECIFICATIONS (SDS) ... ... 56
Standard and Limit ............................................... ... 56
ENGINE COOLANT CAPACITY (APPROXI-
MATE) ............................................................... ... 56
RADIATOR ........................................................ ... 56
THERMOSTAT .................................................. ... 56
WATER CONTROL VALVE ............................... ... 56

PRECAUTIONS CO-3
[VQ35DE]
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Revision: 2006 December 2006 FX35/FX45
[VQ35DE]PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
NBS003JN
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING:

To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions for Liquid GasketNBS003JO
REMOVAL OF LIQUID GASKET SEALING

After removing mounting nuts and bolts, separate the mating
surface using the seal cutter (SST) and remove old liquid gasket
sealing.
CAUTION:
Be careful not to damage the mating surfaces.

Tap the seal cutter to insert it, and then slide it by tapping on the
side as shown in the figure.

In areas where seal cutter is difficult to use, use a plastic ham-
mer to lightly tap the parts, to remove it.
CAUTION:
If for some unavoidable reason tool such as a screwdriver
is used, be careful not to damage the mating surfaces.
LIQUID GASKET APPLICATION PROCEDURE
1. Using a scraper, remove old liquid gasket adhering to the liquid
gasket application surface and the mating surface.

Remove liquid gasket completely from the groove of the liquid
gasket application surface, mounting bolts, and bolt holes.
2. Wipe the liquid gasket application surface and the mating sur- face with white gasoline (lighting and heating use) to remove
adhering moisture, grease and foreign materials.
PBIC0002E
PBIC0003E

CO-14
[VQ35DE]
RADIATOR
Revision: 2006 December 2006 FX35/FX45
RADIATORPFP:21400
ComponentsNBS003JW

Refer to GI-11, "Components" for symbol marks in the figure.
Removal and InstallationNBS003JX
REMOVAL
WARNING:
Do not remove radiator cap when engine is hot. Serious burns could occur from high-pressure engine
coolant escaping from radiator. Wrap a thick cloth around the cap. Slowly turn it a quarter of a turn to
release built-up pressure. Carefully remove radiator cap by turning it all the way.
1. Remove front engine undercover with power tool.
2. Drain engine coolant from radiator. Refer to CO-11, "
Changing Engine Coolant" .
CAUTION:

Perform this step when the engine is cold.

Do not spill engine coolant on drive belts.
3. Remove air duct (inlet) and air cleaner case assembly. Refer to EM-17, "
AIR CLEANER AND AIR DUCT"
.
1. Reservoir tank cap 2. Reservoir tank 3. Reservoir tank hose
4. Clamp (reservoir tank hose) 5. Clamp (radiator hose) 6. Radiator hose (upper)
7. Radiator upper mount bracket 8. Mounting rubber (upper) 9. Radiator cap
10. Radiator 11. Mounting rubber (lower) 12. O-ring
13. Drain plug 14. Radiator hose (lower) 15. Clamp (A/T fluid cooler hose)
16. A/T fluid cooler hose 17. Radiator cooling fan assembly 18. Reservoir tank bracket
A. To A/T fluid cooler tube
PBIC4680E

RADIATOR CO-15
[VQ35DE]
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Revision: 2006 December 2006 FX35/FX45
4. Remove reservoir tank and reservoir tank bracket.
5. Disconnect A/T fluid cooler hoses from radiator.

Install blind plug to avoid leakage of A/T fluid.
6. Removal radiator hoses (upper and lower) and reservoir tank hose. CAUTION:
Be careful not to allow engine coolant to contact drive belts.
7. Remove radiator cooling fan assembly. Refer to CO-21, "
COOLING FAN" .
8. Rotate two radiator upper mount brackets 90 degrees in the direction shown in the figure, and remove them.
9. Lift up and remove radiator. CAUTION:
Do not damage or scratch A/C condenser and radiator core
when removing.
INSTALLATION
Installation is the reverse order of removal.
INSPECTION AFTER INSTALLATION

Check for leaks of engine coolant using the radiator cap tester adapter [SST: EG17650301 (J33984-A)]
and the radiator cap tester (commercial service tool). Refer to CO-11, "
LEAK CHECK" .

Start and warm up the engine. Visually make sure that there is no leaks of engine coolant and A/T fluid.
Checking Radiator CapNBS003JY

Check valve seat of radiator cap.
–Check if valve seat is swollen to the extent that the edge of the
plunger cannot be seen when watching it vertically from the top.
–Check if valve seat has no soil and damage.
SBIA0447E
SBIA0448E
PBIC2816E

CO-16
[VQ35DE]
RADIATOR
Revision: 2006 December 2006 FX35/FX45

Pull negative-pressure valve to open it, and make sure that it
close completely when released.
–Make sure that there is no dirt or damage on the valve seat of
radiator cap negative-pressure valve.
–Make sure that there are no unusualness in the opening and
closing conditions of negative-pressure valve.

Check radiator cap relief pressure.
–When connecting radiator cap to the radiator cap tester (com-
mercial service tool) and the radiator cap tester adapter [SST],
apply engine coolant to the cap seal surface.

Replace radiator cap if there is an unusualness related to the above three.
CAUTION:
When installing radiator cap, thoroughly wipe out the radiator filler neck to remove any waxy residue
or foreign material.
Checking RadiatorNBS003JZ
Check radiator for mud or clogging. If necessary, clean radiator as follows.

Be careful not to bend or damage radiator fins.

When radiator is cleaned without removal, remove all surrounding parts such as radiator cooling fan
assembly and horns. Then tape harness and connectors to prevent water from entering.
1. Apply water by hose to the back side of the radiator core vertically downward.
2. Apply water again to all radiator core surfaces once per minute.
3. Stop washing if any stains no longer flow out from radiator.
4. Blow air into the back side of radiator core vertically downward.

Use compressed air lower than 490 kPa (5 kg/cm2 , 71 psi) and keep distance more than 30 cm (11.81
in).
5. Blow air again into all the radiator core surfaces once per minute until no water sprays out.
SMA967B
Standard:
78 - 98 kPa (0.8 - 1.0 kg/cm
2 , 11 - 14 psi)
Limit:
59 kPa (0.6 kg/cm
2 , 9 psi)
SLC755A

COOLING FAN CO-21
[VQ35DE]
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Revision: 2006 December 2006 FX35/FX45
COOLING FANPFP:21140
ComponentsNBS003K2
Removal and Installation NBS003K3
REMOVAL
1. Remove air duct (inlet), power duct and air cleaner case assembly. Refer to EM-17, "AIR CLEANER AND
AIR DUCT" .
2. Disconnect harness connector from fan motors, and move harness to aside.
3. Remove radiator cooling fan assembly.
CAUTION:
Be careful not to damage or scratch on radiator core.
INSTALLATION
Installation is the reverse order of removal.
INSPECTION AFTER INSTALLATION
Make sure that fan motors operate normally.
NOTE:
Cooling fans are controlled by ECM. For details, refer to EC-497, "
DTC P1217 ENGINE OVER TEMPERA-
TURE" .
Disassembly and Assembly NBS003K4
DISASSEMBLY
1. Remove cooling fans (RH and LH) from fan motors.
2. Remove fan motors from fan shroud.
INSPECTION AFTER DISASSEMBLY
Cooling Fan
Inspect cooling fan for crack or unusual bend.

If anything is found, replace cooling fan.
ASSEMBLY
Assemble in the reverse order of disassembly.
CAUTION:
Cooling fans and fan motors are different between RH and LH. Be careful not to misassemble them.
1. Cooling fan (RH) 2. Cooling fan (LH) 3. Fan shroud
4. Fan motor
PBIC3047E