2004 INFINITI FX35 alternator

EXHAUST MANIFOLD AND THREE WAY CATALYST
EM-179
[VK45DE]
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Revision: 2004 November 2004 FX35/FX45
b. Remove heated oxygen sensor 1 and 2 on both bank with
heated oxygen sensor wrench (SST).

Put marks to identify installation positions of each heated oxy-
gen sensor.
CAUTION:

Be careful not to damage heated oxygen sensor.

Discard any heated oxygen sensor which has been
dropped from a height of more than 0.5 m (19.7 in) onto a
hard surface such as a concrete floor; replace with a new
one.
9. Remove exhaust mounting bracket between three way catalysts (right and left bank) and transmission.
Refer to EX-3, "
EXHAUST SYSTEM" .
10. Disconnect A/C piping from A/C compressor, then remove A/C compressor with power tool. Refer to AT C -
139, "Components" .
11. Remove alternator and bracket. Refer to SC-23, "
CHARGING SYSTEM" .
12. Remove exhaust front tube with power tool. Refer to EX-3, "
EXHAUST SYSTEM" .
13. Remove steering lower joint at power steering gear assembly side, and release steering lower shaft.
Refer to PS-19, "
POWER STEERING GEAR AND LINKAGE" .
14. Remove three way catalysts (right and left bank).
15. Remove exhaust manifold covers. (right and left bank)
16. Loosen mounting nuts in reverse order as shown in the figure to
remove exhaust manifold.
NOTE:
Disregard the numerical order No. 9 to 12 in removal.
17. Remove exhaust manifold gaskets.
CAUTION:
Cover engine openings to avoid entry of foreign materials.
PBIC2333E
PBIC2334E
PBIC1549E

EM-238
[VK45DE]
ENGINE ASSEMBLY
Revision: 2004 November 2004 FX35/FX45

After disconnection, plug the opening on transmission side.
11. Remove front drive shaft (both side). Refer to FAX-12, "
FRONT DRIVE SHAFT" .
12. Remove front propeller shaft. Refer to PR-4, "
FRONT PROPELLER SHAFT" .
13. Remove three way catalyst (both bank). Refer to EM-178, "
EXHAUST MANIFOLD AND THREE WAY
CATALYST" .
Removal Work
1. Install engine slingers into front of left bank cylinder head and
front of right bank cylinder head.
2. Lift with hoist and secure engine in position.
3. Use manual lift table caddy (commercial service tool) or equivalently rigid tool such as transmission jack.
Securely support bottom of suspension member and transmission.
CAUTION:
Put a piece of wood or something similar as the supporting surface, secure a completely stable
condition.
4. Remove front suspension member mounting nuts with power tool. Refer to FSU-6, "
FRONT SUSPEN-
SION ASSEMBLY" .
5. Carefully lower jack, or raise lift to remove engine, transmission
front final drive and front suspension member assembly. When
performing work, observe the following caution:
CAUTION:

Confirm there is no interference with vehicle.

Make sure that all connection points have been discon-
nected.

Keep in mind the center of vehicle gravity changes. If
necessary, use jack(s) to support vehicle at rear jacking
point(s) to prevent it from falling it off the lift.
Separation Work
1. Change engine slinger installing to cylinder head (right bank).
NOTE:
In order to keep secure position when hoisting engine.
2. Remove engine mounting insulators (RH and LH) under side nut with power tool.
3. Lift with hoist and separate engine and transmission assembly from front suspension member.
CAUTION:

Before and during this lifting, always check if any harnesses are left connected.

Avoid damage to and oil/grease smearing or spills onto engine mounting insulator.
4. Remove alternator. Refer to SC-23, "
CHARGING SYSTEM" . Slinger bolts:
:33.4 N·m (3.4 kg-m, 25 ft-lb)
PBIC1556E
PBIC1557E
Slinger bolts:
:33.4 N·m (3.4 kg-m, 25 ft-lb)
PBIC2447E

MA-1
MAINTENANCE
L MAINTENANCE
CONTENTS
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Revision: 2004 November 2004 FX35/FX45
MAINTENANCE
PREPARATION ........................................................... 3
Special Service Tools ............................................... 3
Commercial Service Tools ........................................ 3
GENERAL MAINTENANCE ....................................... 4
Explanation of General Maintenance ....................... 4
PERIODIC MAINTENANCE ....................................... 7
Introduction of Periodic Maintenance ....................... 7
Schedule 1 ............................................................... 8
EMISSION CONTROL SYSTEM MAINTE-
NANCE .................................................................. 8
CHASSIS AND BODY MAINTENANCE ............... 9
Schedule 2 ............................................................. 10
EMISSION CONTROL SYSTEM MAINTE-
NANCE ................................................................ 10
CHASSIS AND BODY MAINTENANCE .............. 11
RECOMMENDED FLUIDS AND LUBRICANTS ...... 12
Fluids and Lubricants ............................................. 12
SAE Viscosity Number ........................................... 13
GASOLINE ENGINE OIL .................................... 13
Anti-Freeze Coolant Mixture Ratio ......................... 13
ENGINE MAINTENANCE (VQ35DE ENGINE) ......... 14
Checking Drive Belts .............................................. 14
Tension Adjustment ................................................ 14
ALTERNATOR AND POWER STEERING OIL
PUMP BELT ........................................................ 15
AIR CONDITIONER COMPRESSOR BELT ....... 15
Changing Engine Coolant ...................................... 15
DRAINING ENGINE COOLANT ......................... 15
REFILLING ENGINE COOLANT ........................ 16
FLUSHING COOLING SYSTEM ......................... 17
Checking Fuel Lines ............................................... 17
Changing Air Cleaner Filter .................................... 17
VISCOUS PAPER TYPE ..................................... 17
Changing Engine Oil .............................................. 17
Changing Oil Filter ................................................. 18
REMOVAL ........................................................... 18
INSTALLATION ................................................... 19
INSPECTION AFTER INSTALLATION ............... 19
Changing Spark Plugs (Platinum-Tipped Type) ..... 19
REMOVAL ........................................................... 19INSPECTION AFTER REMOVAL ....................... 20
INSTALLATION ................................................... 20
Checking EVAP Vapor Lines .................................. 20
ENGINE MAINTENANCE (VK45DE ENGINE) ......... 21
Checking Drive Belts .............................................. 21
Tension Adjustment ................................................ 21
Changing Engine Coolant ....................................... 21
DRAINING ENGINE COOLANT .......................... 22
REFILLING ENGINE COOLANT ......................... 22
FLUSHING COOLING SYSTEM ......................... 23
Checking Fuel Lines ............................................... 24
Changing Air Cleaner Filter .................................... 24
VISCOUS PAPER TYPE ..................................... 24
Changing Engine Oil ............................................... 24
Changing Oil Filter .................................................. 25
REMOVAL ........................................................... 25
INSTALLATION ................................................... 25
INSPECTION AFTER INSTALLATION ................ 25
Changing Spark Plugs (Platinum-Tipped Type) ...... 26
REMOVAL ........................................................... 26
INSPECTION AFTER REMOVAL ....................... 26
INSTALLATION ................................................... 27
Checking EVAP Vapor Lines .................................. 27
CHASSIS AND BODY MAINTENANCE ................... 28
Checking Exhaust System ...................................... 28
Checking A/T Fluid ................................................. 28
Changing A/T Fluid ................................................. 30
Checking Transfer Fluid ......................................... 30
Changing Transfer Fluid ......................................... 31
Checking Propeller Shaft ........................................ 31
Checking Differential Gear Oil ................................ 31
Changing Differential Gear Oil ................................ 32
Balancing Wheels (Bonding Weight Type) ............. 32
REMOVAL ........................................................... 32
WHEEL BALANCE ADJUSTMENT ..................... 32
Tire Rotation ........................................................... 34
Checking Brake Fluid Level and Leaks .................. 34
Checking Brake Lines and Cables ......................... 34
Changing Brake Fluid ............................................. 34
Checking Disc Brake .............................................. 35

MA-14
ENGINE MAINTENANCE (VQ35DE ENGINE)
Revision: 2004 November 2004 FX35/FX45
ENGINE MAINTENANCE (VQ35DE ENGINE)PFP:10001
Checking Drive BeltsALS000H0
WARNING:
Be sure to perform when engine is stopped.
1. Inspect belts for cracks, fraying, wear and oil. If necessary,
replace.
2. Inspect drive belt deflection or tension at a point on the belt mid-
way between pulleys.

Inspection should be done only when engine is cold, or over
30 minutes after engine is stopped.

Measure belt tension with belt tension gauge (Commercial
Service Tool: BT3373-F or equivalent) at points marked
shown in the figure.

When measuring deflection, apply 98 N (10 kg, 22 lb) at the
marked point.

Adjust if belt deflection exceeds the limit or if belt tension is not within specifications.
CAUTION:

When checking belt deflection or tension immediately after installation, first adjust it to the
specified value. Then, after turning crankshaft two turns or more, re-adjust to the specified
value to avoid variation in deflection between pulleys.

Tighten idler pulley lock nut by hand and measure deflection or tension without looseness.
Belt Deflection and Tension
*: If belt tension gauge cannot be installed at check points shown, check drive belt tension at different location on the belt.
Tension AdjustmentALS000H1
CAUTION:

When belt is replaced with a new one, adjust it to value for “New belt” to accommodate for insuffi-
cient adaptability with pulley grooves.

When deflection or tension of belt being used exceeds “Limit”, adjust it to value for “After adjust-
ment of used belt”.

When checking belt deflection or tension immediately after installation, first adjust it to the speci-
fied value. Then, after turning crankshaft two turns or more, re-adjust to the specified value to
avoid variation in deflection between pulleys.

When installing belt, make sure that it is correctly engaged with pulley grooves.

Keep engine oil, working fluid and engine coolant away from belt and pulley grooves.

Do not twist or bend belt excessively.
KBIA1731J
ItemsDeflection adjustment Unit: mm (in) Tension adjustment* Unit: N (kg, lb)
Used belt
New beltUsed belt
New belt
Limit After adjustment Limit After adjustment
Alternator and
power steering
oil pump belt7 (0.28)4 - 5
(0.16 - 0.20)3.5 - 4.5
(0.138 - 0.177)294 (30, 66)730 - 818
(74.5 - 83.5,
164 - 184)838 - 926
(85.5 - 94.5,
188 - 208)
Air conditioner
compressor belt12 (0.47)9 - 10
(0.35 - 0.39)8 - 9
(0.31 - 0.35)196 (20, 44)348 - 436
(35.5 - 44.5,
78 - 98)470 - 559
( 4 8 - 5 7 ,
106 - 126)
Applied pushing
force98 N (10 kg, 22 lb) —
PortionBelt tightening method for adjustment
Alternator and power steering oil pump belt Adjusting bolt on idler pulley
Air conditioner compressor belt Adjusting bolt on idler pulley

ENGINE MAINTENANCE (VQ35DE ENGINE)
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Revision: 2004 November 2004 FX35/FX45
ALTERNATOR AND POWER STEERING OIL PUMP BELT
1. Remove front engine undercover with power tool.
2. Loosen idler pulley lock nut (A) and adjust tension by turning
adjusting bolt (B).

For specified belt tension, refer to MA-14, "Checking Drive
Belts" .
3. Tighten nut (A).
AIR CONDITIONER COMPRESSOR BELT
1. Remove front engine undercover with power tool.
2. Loosen idler pulley lock nut (C) and adjust tension by turning adjusting bolt (D).

For specified belt tension, refer to MA-14, "Checking Drive Belts" .
3. Tighten nut (C).
Changing Engine CoolantALS000H2
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 tools.
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 engine cylinder block.
Refer to EM-121, "
DISASSEMBLY" .
3. Check drained engine coolant for contaminants such as rust, corrosion or discoloration.
If contaminated, flush the engine cooling system. Refer to MA-17, "
FLUSHING COOLING SYSTEM" . : 34.8 N·m (3.5 kg-m, 26 ft-lb)
SBIA0532E
: 34.8 N·m (3.5 kg-m, 26 ft-lb)
SBIA0444E

ENGINE MAINTENANCE (VK45DE ENGINE)
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Revision: 2004 November 2004 FX35/FX45
ENGINE MAINTENANCE (VK45DE ENGINE)PFP:10001
Checking Drive BeltsALS000GP
WARNING:
Be sure to perform when the engine is stopped.

Remove air duct (inlet) when inspecting drive belt for alternator, water pump and A/C compressor.

Remove undercover (with power tool) when inspecting power steering oil pump belt.

Make sure that indicator (single line notch) of each automatic tensioner is within the allowable working
range (between three line notches).
NOTE:

Check the auto tensioner indication when the engine is cold.

When the new drive belt is installed, the range should be A.

The indicator notch is located on the moving side of the tensioner for alternator, water pump and A/C
compressor belt, while it is found on the fixed side for power steering oil pump belt.

Visually check entire belt for wear, damage or cracks.

If the indicator is out of allowable working range or belt is damaged, replace the belt.
Tension AdjustmentALS000GQ
Belt tensioning is not necessary, as it is automatically adjusted by auto tensioner.
Changing Engine CoolantALS000H6
WARNING:

To avoid being scalded, do not change engine coolant when engine is hot.

Wrap a thick cloth around radiator cap and carefully remove radiator cap. First, turn radiator cap a
quarter of a turn to release built-up pressure. Then turn radiator cap all the way.
PBIC1541E

SERVICE DATA AND SPECIFICATIONS (SDS)
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Revision: 2004 November 2004 FX35/FX45
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Standard and LimitALS000G0
BELT DEFLECTION AND TENSION (VQ35DE)
*: If belt tension gauge cannot be installed at check points shown, check drive belt tension at different location on the belt.
BELT DEFLECTION AND TENSION (VK45DE)
ENGINE COOLANT CAPACITY (APPROXIMATE) (VQ35DE)
Unit: (US qt, lmp qt)
ENGINE COOLANT CAPACITY (APPROXIMATE) (VK45DE)
Unit: (US qt, lmp qt)
RADIATOR
Unit: kPa (kg/cm2 , psi)
ENGINE OIL CAPACITY (APPROXIMATE) (VQ35DE)
Unit: (US qt, lmp qt) ItemsDeflection adjustment Unit: mm (in) Tension adjustment* Unit: N (kg, lb)
Used belt
New beltUsed belt
New belt
Limit After adjustment Limit After adjustment
Alternator and
power steering
oil pump belt 7 (0.28)4 - 5
(0.16 - 0.20)3.5 - 4.5
(0.138 - 0.177)294 (30, 66)730 - 818
(74.5 - 83.5,
164 - 184)838 - 926
(85.5 - 94.5,
188 - 208)
Air conditioner
compressor belt 12 (0.47)9 -10
(0.35 - 0.39)8 - 9
(0.31 - 0.35)196 (20, 44)348 - 436
(35.5 - 44.5,
78 - 98)470 - 559
(48 - 57,
106 - 126)
Applied pushing
force98 N (10 kg, 22 lb) —
KBIA1731J
Tension of drive belts Auto-adjustment by auto tensioner
Engine coolant capacity (With reservoir tank at “MAX” level) 8.6 (9-1/8, 7-5/8)
Reservoir tank engine coolant capacity (At “MAX” level) 0.8 (7/8, 3/4)
Engine coolant capacity (With reservoir tank at “MAX” level) 10.0 (10-5/8, 8-3/4)
Reservoir tank engine coolant capacity (At “MAX” level) 0.8 (7/8, 3/4)
Cap relief pressureStandard 78 - 98 (0.8 - 1.0, 11 - 14)
Limit 59 (0.6, 9)
Leakage test pressure157 (1.6, 23)
Drain and refill With oil filter change 4.7 (5, 4-1/8)
Without oil filter change 4.4 (4-5/8, 3-7/8)
Dry engine (Overhaul) 5.4 (5-3/4, 4-3/4)

SC-1
STARTING & CHARGING SYSTEM
K ELECTRICAL
CONTENTS
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SECTION SC
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SC
Revision: 2004 November 2004 FX35/FX45
STARTING & CHARGING SYSTEM
PRECAUTIONS .......................................................... 2
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 2
Wiring Diagrams and Trouble Diagnosis .................. 2
PREPARATION ........................................................... 3
Special Service Tools ............................................... 3
Commercial Service Tools ........................................ 3
BATTERY .................................................................... 4
How to Handle Battery ............................................. 4
METHODS OF PREVENTING OVER-DIS-
CHARGE ............................................................... 4
CHECKING ELECTROLYTE LEVEL .................... 5
SPECIFIC GRAVITY CHECK ............................... 5
CHARGING THE BATTERY ................................. 6
Trouble Diagnosis with Battery/Starting/Charging
System Tester .......................................................... 6
DIAGNOSTIC RESULT ITEM CHART .................. 8
Removal and Installation .......................................... 9
REMOVAL ............................................................. 9
INSTALLATION ..................................................... 9
STARTING SYSTEM ................................................ 10
System Description ................................................ 10
Wiring Diagram — START — .................................. 11
VK45DE ENGINE MODELS ................................ 11
VQ35DE ENGINE MODELS ............................... 12
Trouble Diagnosis with Battery/Starting/Charging
System Tester ........................................................ 13
DIAGNOSTIC RESULT ITEM CHART ................ 13
WORK FLOW ...................................................... 14
DIAGNOSTIC PROCEDURE 1 ........................... 15
DIAGNOSTIC PROCEDURE 2 ........................... 16
MINIMUM SPECIFICATION OF CRANKING VOLTAGE REFERENCING COOLANT TEM-
PERATURE ......................................................... 16
Removal and Installation ........................................ 17
VK45DE ENGINE MODELS ................................ 17
VQ35DE ENGINE MODELS (2WD) .................... 18
VQ35DE ENGINE MODELS (AWD) .................... 19
Disassembly and Assembly .................................... 20
Inspection After Disassembly ................................. 22
PINION/CLUTCH CHECK ................................... 22
CHARGING SYSTEM ............................................... 23
System Description ................................................. 23
Wiring Diagram — CHARGE — ............................. 24
VK45DE ENGINE MODELS ................................ 24
VQ35DE ENGINE MODELS ............................... 25
Trouble Diagnosis with Battery/Starting/Charging
System Tester ......................................................... 26
DIAGNOSTIC RESULT ITEM CHART ................ 27
WORK FLOW ...................................................... 28
DIAGNOSTIC PROCEDURE 1 ........................... 29
DIAGNOSTIC PROCEDURE 2 ........................... 30
DIAGNOSTIC PROCEDURE 3 ........................... 31
DIAGNOSTIC PROCEDURE 4 ........................... 32
DIAGNOSTIC PROCEDURE 5 ........................... 33
MALFUNCTION INDICATOR .............................. 33
Removal and Installation ........................................ 34
VK45DE ENGINE MODELS ................................ 34
VQ35DE ENGINE MODELS ............................... 35
Disassembly and Assembly .................................... 37
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 39
Battery .................................................................... 39
Starter ..................................................................... 39
Alternator ................................................................ 39