2007 INFINITI FX35 engine control

DAYTIME LIGHT SYSTEM LT-39
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Revision: 2006 July 2007 FX35/FX45

to BCM terminal 55,

through 10A fuse (No. 36, located in fuse, fusible link and relay box)

to daytime light relay terminals 2 and 5.
When ignition switch is in ON or START position, power is supplied

through 10A fuse [No. 12, located in fuse block (J/B)]

to combination meter terminal 7,

through 15A fuse [No. 1, located in fuse block (J/B)]

to BCM terminal 38.
Ground is supplied

to combination meter terminals 5, 6 and 15

through grounds M35, M45 and M85,

to BCM terminals 49 and 52

through grounds M35, M45 and M85.
DAYTIME LIGHT OPERATION
Once the parking brake is turned OFF after ignition switch ON, if the lighting switch is turned OFF while engine
running, the BCM sends daytime light request signal (ON) through CAN communication.
When receiving daytime light request signal (ON), combination meter turns ON daytime light relay. And power
is supplied

through daytime light relay terminal 1

to combination meter terminal 10,

through daytime light relay terminal 3

to parking lamp RH and LH terminals 1.
Ground is supplied

to combination meter terminals 5, 6 and 15

through grounds M35, M45 and M85,

to parking lamp RH and LH terminals 3

through grounds E21, E50 and E51.
With power and grounds supplied, the daytime light lamps illuminate.
COMBINATION SWITCH READING FUNCTION
Refer to BCS-3, "COMBINATION SWITCH READING FUNCTION" .
AUTO LIGHT OPERATION
Refer to LT- 5 5 , "System Description" .
CAN Communication System DescriptionNKS002VY
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
CAN Communication UnitNKS002VZ
Refer to LAN-49, "CAN System Specification Chart" .

LT-78
FRONT FOG LAMP
Revision: 2006 July 2007 FX35/FX45
FRONT FOG LAMPPFP:26150
Component Parts and Harness Connector LocationNKS002WW
System DescriptionNKS002WX
Control of the front fog lamps is dependent upon the position of the combination switch (lighting switch). The
lighting switch must be in the 2ND position or AUTO position (headlamp is ON) for front fog lamp opera-
tion.When the lighting switch is placed in the front fog lamp on position the BCM (body control module)
receives input signal requesting the front fog lamps to illuminate. When the headlamps are illuminated, this
input signal is communicated to the IPDM E/R (intelligent power distribution module engine room) through the
CAN communication lines. The CPU (central processing unit) located in the IPDM E/R controls the front fog
lamp relay coil. When activated, this relay directs power to the front fog lamps.
OUTLINE
Power is supplied at all times

to ignition relay, located in IPDM E/R, from battery direct,

through 15A fuse (No. 88, located in IPDM E/R)

to front fog lamp relay, located in IPDM E/R,

through 15A fuse (No. 78, located in IPDM E/R)

to CPU located in IPDM E/R,

through 10A fuse (No. 71, located in IPDM E/R)

to CPU located in IPDM E/R.

through 50A fusible link (letter M, located in fuse, fusible link and relay box)

to BCM terminal 55,

through 15A fuse [No. 22, located in fuse block (J/B)]

to BCM terminal 42.
When ignition switch is in ON or START position, power is supplied

to ignition relay (located IPDM E/R)

through 15A fuse [No. 1, located in fuse block (J/B)]
PKIB3475E

PARKING, LICENSE PLATE AND TAIL LAMPS LT-131
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PARKING, LICENSE PLATE AND TAIL LAMPSPFP:26550
Component Parts and Harness Connector LocationNKS003GZ
System DescriptionNKS003H0
Control of the parking, license plate, side marker and tail lamp operation is dependent upon the position of the
lighting switch (combination switch). When the lighting switch is placed in the 1ST position, the BCM (body
control module) receives input signal requesting the parking, license plate, side marker and tail lamps to illumi-
nate. This input signal is communicated to the IPDM E/R (intelligent power distribution module engine room)
through the CAN communication lines. CPU (central processing unit) located in the IPDM E/R controls the tail
lamp relay coil. This relay, when energized, directs power to the parking, license plate, side marker and tail
lamps, which then illuminate.
The current that flows by Rear combination lamp control unit is controlled, and a tail lamp (LED) is made to
turn ON.
OUT LINE
Power is supplied at all times

to ignition relay, located in IPDM E/R, from battery direct,

through 10A fuse (No. 71, located in IPDM E/R)

to tail lamp relay, located in IPDM E/R and
PKIC9694E

LT-186
ILLUMINATION
Revision: 2006 July 2007 FX35/FX45
ILLUMINATIONPFP:27545
System DescriptionNKS002Z2
Control of illumination lamps operation is dependent upon position of lighting switch (combination switch).
When lighting switch is placed in the 1ST or 2ND position (or if auto light system is activated), BCM (body con-
trol module) receives input signal requesting illumination lamps to illuminate. This input signal is communi-
cated to IPDM E/R (intelligent power distribution module engine room) through the CAN communication. The
CPU (central processing unit) located in the IPDM E/R controls tail lamp relay coil. This relay, when energized,
directs power to illumination lamps, which then illuminate.
Power is supplied at all times

through 10A fuse (No. 71, located in IPDM E/R)

to tail lamp relay, located in IPDM E/R, and

to CPU located in IPDM E/R.
Power is also supplied at all times

through 50A fusible link (letter M, located in fuse, fusible link and relay box)

to BCM terminal 55,

through 15A fuse [No. 22 located in fuse block (J/B)]

to BCM terminal 42,

through 15A fuse (No. 78, located in IPDM E/R)

to CPU located in IPDM E/R,

through 10A fuse [No. 19 located in fuse block (J/B)]

to unified meter and A/C amp. terminal 21 and

to combination meter terminal 8.
With ignition switch in ON or START position, power is supplied

to ignition relay, located in IPDM E/R, from battery direct,

through 15A fuse [No. 1 located in fuse block (J/B)]

to BCM terminal 38,

through 10A fuse [No. 12, located in fuse block (J/B)]

to unified meter and A/C amp. terminal 22 and

to combination meter terminal 7.
With ignition switch in ACC or ON position, power is supplied

through 10A fuse [No. 6, located in fuse block (J/B)]

to combination meter terminal 4 and

to BCM terminal 11.
Ground is supplied

to BCM terminals 49 and 52

to unified meter and A/C amp. terminals 29 and 30, and

to combination meter terminals 5, 6, and 15

through grounds M35, M45, and M85,

to IPDM E/R terminals 38 and 60

through grounds E21, E50, and E51.
ILLUMINATION OPERATION BY LIGHTING SWITCH
With lighting switch in the 1ST or 2ND position (or if auto light system is activated), BCM receives input signal
requesting illumination lamps to illuminate. This input signal is communicated to IPDM E/R through the CAN
communication. The CPU located in the IPDM E/R controls tail lamp relay coil, which, when energized, directs
power

through IPDM E/R terminal 22

to glove box lamp terminal 1

to A/T device (illumination) terminal 11

to snow mode switch (illumination) terminal 5

to VDC off switch (illumination) terminal 3

ENGINE OIL LU-7
[VQ35DE]
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ENGINE OILPFP:KLA92
InspectionNBS003J0
ENGINE OIL LEVEL
NOTE:
Before starting engine, put vehicle horizontally and check the engine oil level. If engine is already started, stop
it and allow 10 minutes before checking.
1. Pull out oil level gauge and wipe it clean.
2. Insert oil level gauge and make sure the engine oil level is within the range shown in the figure.
3. If it is out of range, adjust it.
NOTE:
When checking the engine oil level, insert oil level gauge with its
tip aligned with oil level gauge guide on cylinder head. (In figure,
air cleaner case and air duct are removed.)
ENGINE OIL APPEARANCE

Check engine oil for white turbidity or heavy contamination.

If engine oil becomes turbid and white, it is highly probable that it is contaminated with engine coolant.
Repair or replace damaged parts.
ENGINE OIL LEAKAGE
Check for engine oil leakage around the following areas:

Oil pans (lower and upper)

Oil pan drain plug

Oil pressure switch

Oil filter

Oil filter bracket (AWD models)

Oil cooler

Water pump cover

Chain tensioner cover

Intake valve timing control cover and intake valve timing control solenoid valve

Mating surface between cylinder head and rocker cover

Mating surface between front timing chain case and rear timing chain case

Mating surface between rear timing chain case and cylinder head

Mating surface between rear timing chain case and cylinder block.

Mating surface between rear timing chain case and oil pan (upper)

Mating surface between cylinder block and cylinder head
PBIC3101E
KBIA1343E

ENGINE OIL LU-25
[VK45DE]
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Revision: 2006 July 2007 FX35/FX45
ENGINE OILPFP:KLA92
InspectionNBS003JG
ENGINE OIL LEVEL
NOTE:
Before starting engine, put vehicle horizontally and check the engine oil level. If engine is already started, stop
it and allow 15 minutes before checking.
1. Pull out oil level gauge and wipe it clean.
2. Insert oil level gauge and make sure the engine oil level is within the range shown in the figure.
3. If it is out of range, adjust it.
ENGINE OIL APPEARANCE

Check engine oil for white turbidity or heavy contamination.

If engine oil becomes turbid and white, it is highly probable that it is contaminated with engine coolant.
Repair or replace damaged parts.
ENGINE OIL LEAKAGE
Check for oil leakage around the following area.

Oil pan

Oil pan drain plug

Oil pressure switch

Oil filter

Oil cooler

Intake valve timing control cover

Intake valve timing control solenoid valve

Front cover

Chain tensioner cover

Mating surface between cylinder block and cylinder head

Mating surface between cylinder head and rocker cover

Crankshaft oil seals (front and rear)
OIL PRESSURE CHECK
WARNING:

Be careful not to burn yourself, as engine oil may be hot.

Oil pressure check should be done in “Parking position”.
1. Check the engine oil level. Refer to LU-25, "
ENGINE OIL LEVEL" .
2. Remove front engine undercover with power tool.
PBIC0801E

MA-1
MAINTENANCE
L MAINTENANCE
CONTENTS
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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 COMTROL SYSTEM MAINTE-
NANCE ............................................................. ... 10
CHASSIS AND BODY MAINTENANCE .......... .... 11
RECOMMENDED FLUIDS AND LUBRICANTS ... ... 12
Fluids and Lubricants .......................................... ... 12
Engine Oil Recommendation .............................. ... 13
Anti-Freeze Coolant Mixture Ratio ...................... ... 13
ENGINE MAINTENANCE (VQ35DE ENGINE) ...... ... 14
Checking Drive Belts ........................................... ... 14
Drive Belts Tension Adjustment .......................... ... 14
ALTERNATOR AND POWER STEERING OIL
PUMP BELT ..................................................... ... 15
A/C 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 ................................. ... 18
VISCOUS PAPER TYPE .................................. ... 18
Changing Engine Oil ........................................... ... 18
Changing Oil Filter .............................................. ... 19
REMOVAL ........................................................ ... 19
INSTALLATION ................................................ ... 19
INSPECTION AFTER INSTALLATION ............ ... 20
Changing Spark Plugs (Platinum-Tipped Type) .. ... 20
REMOVAL ........................................................ ... 20
INSPECTION AFTER REMOVAL .................... ... 20 INSTALLATION ................................................
... 21
Checking EVAP Vapor Lines ............................... ... 21
ENGINE MAINTENANCE (VK45DE ENGINE) ...... ... 22
Checking Drive Belts ........................................... ... 22
Tension Adjustment ............................................. ... 22
Changing Engine Coolant .................................... ... 22
DRAINING ENGINE COOLANT ....................... ... 23
REFILLING ENGINE COOLANT ...................... ... 23
FLUSHING COOLING SYSTEM ...................... ... 24
Checking Fuel Lines ............................................ ... 25
Changing Air Cleaner Filter ................................. ... 25
VISCOUS PAPER TYPE .................................. ... 25
Changing Engine Oil ............................................ ... 25
Changing Oil Filter ............................................... ... 26
REMOVAL ........................................................ ... 26
INSTALLATION ................................................ ... 26
INSPECTION AFTER INSTALLATION ............. ... 27
Changing Spark Plugs (Platinum-Tipped Type) ... ... 27
REMOVAL ........................................................ ... 27
INSPECTION AFTER REMOVAL .................... ... 27
INSTALLATION ................................................ ... 28
Checking EVAP Vapor Lines ............................... ... 28
CHASSIS AND BODY MAINTENANCE ................ ... 29
Checking Exhaust System ................................... ... 29
Checking A/T Fluid .............................................. ... 29
Changing A/T Fluid .............................................. ... 31
Checking Transfer Fluid ...................................... ... 31
Changing Transfer Fluid ...................................... ... 32
Checking Propeller Shaft ..................................... ... 32
Checking Differential Gear Oil ............................. ... 32
Changing Differential Gear Oil ............................. ... 33
Balancing Wheels (Bonding Weight Type) .......... ... 33
REMOVAL ........................................................ ... 33
WHEEL BALANCE ADJUSTMENT .................. ... 33
Tire Rotation ........................................................ ... 35
Checking Brake Fluid Level and Leaks ............... ... 35
Checking Brake Lines and Cables ...................... ... 35
Changing Brake Fluid .......................................... ... 35
Checking Disc Brake ........................................... ... 36
ROTOR ............................................................. ... 36

GENERAL MAINTENANCE MA-5
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OUTSIDE THE VEHICLE
The maintenance items listed here should be performed from time to time, unless otherwise specified.
INSIDE THE VEHICLE
The maintenance items listed here should be checked on a regular basis, such as when performing periodic maintenance, cleaning the
vehicle, etc. Item
Reference page
Tires Check the pressure with a gauge, including the spare, at least once a month
and always prior to a long distance trips. Adjust to the specified pressure if
necessary. Check carefully for damage, cuts or excessive wear. —
Wheel nuts When checking the tires, make sure no nuts are missing, and check for any
loose nuts. Tighten if necessary. —
Windshield Clean the windshield on a regular basis. Check the windshield at least every
six months for cracks or other damage. Repair as necessary. —
Tire rotation Tires should be rotated every 12,000 km (7,500 miles). MA-35
Transmitter compo-
nents in tire pressure
monitoring system
(TPMS) Replace grommet seal, valve core and cap of the transmitter in TPMS every
tire replacement by reaching wear limit of tire. WT-11
Wheel alignment and
balance If the vehicle pulls to either side while driving on a straight and level road, or if
you detect uneven or abnormal tire wear, there may be a need for wheel align-
ment. If the steering wheel or seat vibrates at normal highway speeds, wheel
balancing may be needed. MA-33
,
FSU-6
Windshield wiper
blades Check for cracks or wear if they do not wipe properly. —
Doors and engine
hood Check that all doors and the engine hood operate smoothly as well as the
trunk lid and back hatch. Also make sure that all latches lock securely. Lubri-
cate if necessary. Make sure that the secondary latch keeps the hood from
opening when the primary latch is released.
When driving in areas using road salt or other corrosive materials, check lubri-
cation frequently. MA-38
Lamps
Make sure that the headlamps, stop lamps, tail lamps, turn signal lamps, and
other lamps are all operating properly and installed securely. Also check head-
lamp aim. Clean the headlamps on a regular basis. —
Item
Reference page
Warning lamps and
chimes Make sure that all warning lamps and chimes are operating properly. —
Windshield wiper and
washer Check that the wipers and washer operate properly and that the wipers do not
streak. —
Windshield defroster Check that the air comes out of the defroster outlets properly and in sufficient
quantity when operating the heater or air conditioner. —
Steering wheel Check that it has the specified play. Be sure to check for changes in the steer-
ing condition, such as excessive play, hard steering or strange noises.
Free play: Less than 35 mm (1.38 in) —
Seats Check seat position controls such as seat adjusters, seatback recliner, etc. to
make sure they operate smoothly and that all latches lock securely in every
position. Check that the head restrains move up and down smoothly and that
the locks (if equipped) hold securely in all latched positions. Check that the
latches lock securely for folding-down rear seatbacks. —
Seat belts Check that all parts of the seat belt system (e.g. buckles, anchors, adjusters
and retractors) operate properly and smoothly, and are installed securely.
Check the belt webbing for cuts, fraying, wear or damage. MA-39
Accelerator pedal
Check the pedal for smooth operation and make sure the pedal does not catch
or require uneven effort. Keep the floor mats away from the pedal. —
Brakes Check that the brake does not pull the vehicle to one side when applied. —
Brake pedal and
booster Check the pedal for smooth operation and make sure it has the proper dis-
tance under it when depressed fully. Check the brake booster function. Be
sure to keep the floor mats away from the pedal. BR-6
,
BR-15