service INFINITI FX35 2004 Service Manual

ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)
BRC-61
[VDC/TCS/ABS]
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Revision: 2004 November 2004 FX35/FX45

After installing vehicle harness connector in the actuator, make sure connector is securely locked.

When replacing ABS actuator and electric unit (control unit), calibrate Steering angle sensor neu-
tral position and Decel G sensor. Refer to BRC-6, "
ON-VEHICLE SERVICE" .
NOTE:

After performing above works, calibrate decel G-sensor (AWD model). Refer to BRC-6, "Calibration of
Decel G-sensor (AWD Model)" .

In the case that ABS actuator and electric unit (control unit) are replaced, make sure to adjust position of
steering angle sensor. Refer to BRC-6, "
Adjustment of Steering Angle Sensor Neutral Position" .

CO-1
ENGINE COOLING SYSTEM
B ENGINE
CONTENTS
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SECTION CO
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Revision: 2004 November 2004 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 Drawing ..................................................... 10
ENGINE COOLANT ...................................................11
Inspection ................................................................ 11
LEVEL CHECK .................................................... 11
CHECKING COOLING SYSTEM FOR LEAKS .... 11
Changing Engine Coolant ....................................... 11
DRAINING ENGINE COOLANT .......................... 11
REFILLING ENGINE COOLANT ........................ 12
FLUSHING COOLING SYSTEM ......................... 13
RADIATOR ................................................................ 14
Removal and Installation ........................................ 14
REMOVAL ........................................................... 14
INSTALLATION ................................................... 15
INSPECTION AFTER INSTALLATION ............... 15
Checking Radiator Cap .......................................... 15
Checking Radiator .................................................. 16
RADIATOR (ALUMINUM TYPE) .............................. 17
Disassembly and Assembly ................................... 17
PREPARATION ................................................... 17
DISASSEMBLY ................................................... 17
ASSEMBLY ......................................................... 18
INSPECTION ...................................................... 20
COOLING FAN ......................................................... 21
Removal and Installation ........................................ 21
REMOVAL ........................................................... 21INSTALLATION ................................................... 21
Disassembly and Assembly .................................... 21
DISASSEMBLY ................................................... 21
ASSEMBLY ......................................................... 21
WATER PUMP .......................................................... 22
Removal and Installation ........................................ 22
REMOVAL ........................................................... 22
INSPECTION AFTER REMOVAL ....................... 24
INSTALLATION ................................................... 24
INSPECTION AFTER INSTALLATION ................ 25
WATER INLET AND THERMOSTAT ASSEMBLY .... 26
Removal and Installation ........................................ 26
REMOVAL ........................................................... 26
INSPECTION AFTER REMOVAL ....................... 27
INSTALLATION ................................................... 27
INSPECTION AFTER INSTALLATION ................ 27
WATER OUTLET AND WATER PIPING ................... 28
Removal and Installation ........................................ 28
REMOVAL ........................................................... 28
INSTALLATION ................................................... 28
INSPECTION AFTER INSTALLATION ................ 28
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 29
Standard and Limit .................................................. 29
ENGINE COOLANT CAPACITY (APPROXI-
MATE) .................................................................. 29
THERMOSTAT .................................................... 29
RADIATOR .......................................................... 29
VK45DE
PRECAUTIONS ........................................................ 30
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ................................................................. 30
PREPARATION ......................................................... 31
Special Service Tools ............................................. 31
Commercial Service Tools ...................................... 31
OVERHEATING CAUSE ANALYSIS ........................ 32
Troubleshooting Chart ............................................ 32

CO-2Revision: 2004 November 2004 FX35/FX45 COOLING SYSTEM .................................................. 34
Cooling Circuit ........................................................ 34
System Drawing ..................................................... 35
ENGINE COOLANT .................................................. 36
Inspection ............................................................... 36
LEVEL CHECK .................................................... 36
LEAK CHECK ...................................................... 36
Changing Engine Coolant ....................................... 36
DRAINING ENGINE COOLANT .......................... 36
REFILLING ENGINE COOLANT ......................... 37
FLUSHING COOLING SYSTEM ......................... 38
RADIATOR ................................................................ 39
Removal and Installation ........................................ 39
REMOVAL ........................................................... 39
INSTALLATION .................................................... 41
INSPECTION AFTER INSTALLATION ................ 41
Checking Radiator Cap .......................................... 41
Checking Radiator .................................................. 41
RADIATOR (ALUMINUM TYPE) ............................... 43
Disassembly and Assembly .................................... 43
PREPARATION ................................................... 43
DISASSEMBLY ................................................... 43
ASSEMBLY ......................................................... 44
INSPECTION ....................................................... 46
COOLING FAN .......................................................... 47
Removal and Installation (Crankshaft Driven Type) ... 47
REMOVAL ........................................................... 47
INSPECTION AFTER REMOVAL ........................ 47INSTALLATION .................................................... 47
Removal and Installation (Motor Driven Type) ........ 48
REMOVAL ............................................................ 48
INSTALLATION .................................................... 48
Disassembly and Assembly (Motor Driven Type) ... 48
DISASSEMBLY .................................................... 48
INSPECTION AFTER DISASSEMBLY ................ 48
ASSEMBLY .......................................................... 48
WATER PUMP ........................................................... 49
Removal and Installation ......................................... 49
REMOVAL ............................................................ 49
INSPECTION AFTER REMOVAL ........................ 49
INSTALLATION .................................................... 50
INSPECTION AFTER INSTALLATION ................ 50
THERMOSTAT AND WATER CONTROL VALVE ..... 51
Removal and Installation ......................................... 51
REMOVAL ............................................................ 51
INSPECTION AFTER REMOVAL ........................ 52
INSTALLATION .................................................... 52
INSPECTION AFTER INSTALLATION ................ 53
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 54
Standard and Limit .................................................. 54
ENGINE COOLANT CAPACITY (APPROXI-
MATE) .................................................................. 54
RADIATOR ........................................................... 54
THERMOSTAT ..................................................... 54
WATER CONTROL VALVE .................................. 54

PRECAUTIONS
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[VQ35DE]
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Revision: 2004 November 2004 FX35/FX45
[VQ35DE]PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
ABS009A8
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 GasketABS005ZR
REMOVAL OF LIQUID GASKET SEALING

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

Tap 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 plastic hammer
to lightly tap the areas where the liquid gasket is applied.
CAUTION:
If for some unavoidable reason tool such as 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-4
[VQ35DE]
PRECAUTIONS
Revision: 2004 November 2004 FX35/FX45
3. Attach liquid gasket tube to tube presser [SST: WS39930000 ( –
)].
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-48, "
RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS" .
4. Apply liquid gasket without breaks to the specified location with
the specified dimensions.

If there is a groove for the liquid gasket application, apply liq-
uid gasket to the groove.

As for the bolt holes, normally apply liquid gasket inside the
holes. Occasionally, it should be applied outside the holes.
Make sure to read the text of service manual.

Within five minutes of liquid gasket application, install the mat-
ing component.

If liquid gasket protrudes, wipe it off immediately.

Do not retighten mounting bolts and nuts after the installation.

After 30 minutes or more have passed from the installation, fill
engine oil and engine coolant.
CAUTION:
If there are specific instructions in this manual, observe them.
EMA0622D
SEM159F

PREPARATION
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PREPARATIONPFP:00002
Special Service ToolsABS004T4
The actual shapes of Kent-Moore tools may from those of special service tools illustrated here.
Tool number
(Kent-Moore No.)
Tool nameDescription
WS39930000
( – )
Tube presserPressing tube of liquid gasket
KV10111100
(J-37228)
Seal cutterRemoving chain tensioner cover and water
pump cover
EG17650301
(J-33984-A)
Radiator cap tester adapterAdapting radiator cap tester to radiator cap
and radiator filler neck
a: 28 (1.10) dia.
b: 31.4 (1.236) dia.
c: 41.3 (1.626) dia.
Unit: mm (in)
KV99103510
( – )
Radiator plate pliers AInstalling radiator upper and lower tanks
KV99103520
( – )
Radiator plate pliers BRemoving radiator upper and lower tanks
S-NT052
NT046
S-NT564
S-NT224
S-NT225

CO-6
[VQ35DE]
PREPARATION
Revision: 2004 November 2004 FX35/FX45
Commercial Service ToolsABS004T5
Tool nameDescription
Power toolLoosening bolts and nuts
Radiator cap tester Checking radiator and radiator cap
PBIC0190E
PBIC1982E

ENGINE COOLANT
CO-11
[VQ35DE]
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ENGINE COOLANTPFP:KQ100
InspectionABS004T8
LEVEL CHECK

Check if the reservoir tank engine coolant level is within the
“MIN” to “MAX” when engine is cool.

Adjust the engine coolant level as necessary.
CHECKING COOLING SYSTEM FOR LEAKS

To check for leaks, apply pressure to the cooling system with
radiator cap tester (commercial service tool) and radiator cap
tester adapter (SST).
WARNING:
Do not remove radiator cap when engine is hot. Serious
burns could occur from high-pressure engine coolant
escaping from radiator.
CAUTION:
Higher test pressure than specified may cause radiator
damage.
NOTE:
In a case that engine coolant decreases, replenish radiator with engine coolant.

If anything is found, repair or replace damaged parts.
Changing Engine CoolantABS004T9
WARNING:

To avoid being scalded, never change engine coolant when engine is hot.

Wrap a thick cloth around cap and carefully remove cap. First, turn cap a quarter of a turn to
release built-up pressure. Then turn cap all the way.
DRAINING ENGINE COOLANT
1. Remove front engine undercover with power tool.
2. Open radiator drain plug at the bottom of radiator, and remove
radiator cap.
CAUTION:
Be careful not to allow engine coolant to contact drive belts.
When drain all of engine coolant in the system, open water drain plugs on cylinder block. Refer to
EM-121, "
DISASSEMBLY" .
3. Check drained engine coolant for contaminants such as rust, corrosion or discoloration.
SMA412B
Testing pressure
: 157 kPa (1.6 kg/cm
2 , 23 psi)
SLC756A
SBIA0444E

RADIATOR
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[VQ35DE]
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Revision: 2004 November 2004 FX35/FX45
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 air conditioner condenser and
radiator core when removing.
INSTALLATION
Install in the reverse order of removal.
INSPECTION AFTER INSTALLATION

Check for leaks of engine coolant using radiator cap tester adapter [SST: EG17650301 (J-33984-A)] and
radiator cap tester (commercial service tool). Refer to CO-11, "
CHECKING COOLING SYSTEM FOR
LEAKS" .

Start and warm up engine. Visually make sure that there is no leaks of engine coolant and A/T fluid.
Checking Radiator CapABS008FW
1. Pull radiator cap negative-pressure valve to open it, and make
sure it close completely when released.

Make sure there is no dirt or damage on valve seat of radiator
cap negative-pressure valve.

Make sure there are no unusualness in the opening and clos-
ing conditions of radiator cap negative-pressure valve.
2. Check radiator cap relief pressure.

When connecting radiator cap to radiator cap tester adapter
(SST) and radiator cap tester (commercial service tool), apply
engine coolant to the cap seal part.

Replace radiator cap if there is an unusualness in radiator cap
negative-pressure valve, or if the open-valve pressure is out-
side of the standard values.
SBIA0447E
SBIA0448E
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

CO-20
[VQ35DE]
RADIATOR (ALUMINUM TYPE)
Revision: 2004 November 2004 FX35/FX45

Use pliers in the locations where plate pliers A cannot be
used.
5. Make sure that the rim is completely crimped down.
6. Confirm that there is no leakage.
Refer to CO-20, "
INSPECTION" .
INSPECTION
1. Apply pressure with radiator cap tester adapter (SST) and radia-
tor cap tester (commercial service tool).
WARNING:
To prevent the risk of the hose coming undone while under
pressure, securely fasten it down with a hose clamp.
CAUTION:
Attach a hose to A/T fluid cooler to seal its inlet and outlet.
2. Check for leakage by soaking radiator in water container with
the testing pressure applied.
SLC897
Standard height “H” : 8.0 - 8.4 mm (0.315 - 0.331 in)
SLC554A
Testing pressure
: 157 kPa (1.6 kg/cm
2 , 23 psi)
SLC933-A
SLC934