2004 INFINITI FX35 cooling

ABCDEFGHIJKMLQUICK REFERENCE INDEX AGENERAL INFORMATIONGIGeneral InformationBENGINEEMEngine MechanicalLUEngine Lubrication SystemCOEngine Cooling SystemECEngine Control SystemFLFuel SystemEXExhaust SystemACCAccelerator Control SystemCTRANSMISSION/
TRANSAXLEATAutomatic TransmissionDDRIVELINE/AXLETFTransferPRPropeller ShaftFFDFront Final DriveRFDRear Final DriveFAXFront AxleRAXRear AxleESUSPENSIONFSUFront SuspensionRSURear SuspensionWTRoad Wheels & TiresFBRAKESBRBrake SystemPBParking Brake SystemBRCBrake Control SystemGSTEERINGPSPower Steering SystemHRESTRAINTSSBSeat BeltsSRSSupplemental Restraint System
(SRS)IBODYBLBody, Lock & Security SystemGWGlasses, Window System & Mir-
rorsRFRoofEIExterior & InteriorIPInstrument PanelSESeatJAIR CONDITIONERATCAutomatic Air ConditionerKELECTRICALSCStarting & Charging SystemLTLighting SystemDIDriver Information SystemWWWiper, Washer & HornBCSBody Control SystemLANLAN SystemAVAudio Visual, Navigation & Tele-
phone SystemACSAuto Cruise Control SystemPGPower Supply, Ground & Circuit Ele-
mentsLMAINTENANCEMAMaintenanceMINDEXIDXAlphabetical IndexEdition: July 2003
Revision: November 2004

QUICK REFERENCE CHART FX35/FX45
QUICK REFERENCE CHART FX35/FX45PFP:00000
ENGINE TUNE-UP DATA (VQ35DE)ELS0003W
Engine modelVQ35DE
Firing order1-2-3-4-5-6
Idle speed
A/T (In “P” or “N” position)rpm
650±50
Ignition timing (BTDC at idle speed)
A/T (In “P” or “N” position)15°± 5°
CO% at idle 0.7 - 9.9 % and engine runs smoothly
Drive BeltDeflection 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 pump7 (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 com-
pressor 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 force 98N (10kg, 22lb) —
Radiater cap relief pressure
kPa (kg/cm
2 , psi)
Standard 78 - 98 (0.8 - 1.0, 11 - 14)
Limit 59 (0.6, 9)
Cooling system leakage testing pres-
surekPa (kg/cm
2 , psi)157(1.6, 23)
Compression pressure
kPa (kg/cm
2 , psi)/rpm
Standard 1,275 (13.0, 185) /300
Minimum 981 (10.0, 142)/300
Spark plug Standard type PLFR5A - 11
Hot type PLFR4A - 11
Cold type PLFR6A - 11
2004

QUICK REFERENCE CHART FX35/FX45
ENGINE TUNE-UP DATA (VK45DE)
FRONT WHEEL ALIGNMENT (Unladen* )
ELS0003X
* : Fuel, engine coolant and engine oil full. Spare tire, jack, hand tools and mats in designated positions.Engine modelVK45DE
Firing order1-8-7-3-6-5-4-2
Idle speed
A/T (In “P” or “N” position) rpm650±50
Ignition timing
(BTDC at idle speed)12°±5°
CO% at idle 0.7 - 9.9 % and engine runs smoothly
Tensions of drive belts Auto adjustment by auto tensioner
Radiater cap relief pressure
kPa (kg/cm
2 , psi)
Standard 78 - 98 (0.8 - 1.0 , 11 - 14 )
Limit 59 (0.6, 9)
Cooling system leakage testing pressure
157(1.6, 23)
kPa (kg/cm
2 , psi)
Compression pressure
kPa (kg/cm
2 , psi)/rpm
Standard 1,320 (13.5, 191) /300
Minimum 1,130 (11.5, 164)/300
Spark plug Standard type PLFR5A - 11
Hot type PLFR4A - 11
Cold type PLFR6A - 11
Camber Degree minute (Decimal degree) Minimum – 1° 29′ ( – 1.48° )
Nominal – 0° 44′ ( – 0.73° )
Maximum 0° 01′ ( 0.02° )
Left and right difference 45′ ( 0.75° ) or less
Caster Degree minute (Decimal degree) Minimum 3° 02′ ( 3.03° )
Nominal 3° 47′ ( 3.78° )
Maximum 4° 32′ ( 4.53° )
Left and right difference 45′ ( 0.75° ) or less
Kingpin inclination Degree minute (Decimal degree) Minimum 12° 20′ ( 12.33° )
Nominal 13° 05′ ( 13.08° )
Maximum 13 50′ ( 13.83° )
Total toe-in Distance (A – B) Minimum 0.6 mm ( 0.024 in )
Nominal 1.6 mm ( 0.063 in )
Maximum 2.6 mm ( 0.102 in )
Angle (left plus right)
Degree minute (Degree)Minimum –
Nominal 6′ ( 0.1° )
Maximum –
Wheel turning angle (Full turn) Inside MInimum 32° 00′ ( 32.0° )
Degree minute (Decimal degree) Nominal 35° 00′ ( 35.0° )
Maximum 36° 00′ ( 36.0° )
Outside
Nominal 30° 00′ ( 30.0° )
Degree minute (Decimal degree)
2004

ACS-58
[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: 2004 November 2004 FX35/FX45
DTC 103 LASER SENSOR FAILAKS006ZJ
1. DIAGNOSTIC CHECK

Are “DTC 11 CONTROL UNIT” or “DTC 20 CAN COMM CIRCUIT” item indicated in self-diagnosis display
item?
YES or NO
YES >> GO TO APPLICABLE ITEM INSPECTION. Refer to ACS-41, "DTC 11 CONTROL UNIT" , and
ACS-41, "
DTC 20 CAN COMM CIRCUIT" .
NO >>

Replace ICC sensor, and adjust laser beam aiming.

After that, erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC
system again.
DTC 104 LASER AIMING INCMPAKS006ZK
1. DIAGNOSTIC CHECK
1. Adjust laser beam aiming. Erase DTC and perform ICC system running test.
2. After that, perform self-diagnosis of ICC system. Is “DTC 104 LASER AIMING INCMP” indicated?
YES or NO
YES >>
Replace ICC sensor, and adjust laser beam aiming.

After that, erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC
system again.
NO >> INSPECTION END
DTC 107 LASER COMM FAILAKS006ZL
1. DIAGNOSTIC CHECK

Is “DTC 11 CONTROL UNIT” or “DTC 20 CAN COMM CIRCUIT” items other than “DTC 107 LASER
COMM FAIL” indicated in the self-diagnosis display item?
YES or NO
YES >> GO TO APPLICABLE ITEM INSPECTION. Refer to ACS-41, "DTC 11 CONTROL UNIT" , and
ACS-41, "
DTC 20 CAN COMM CIRCUIT" .
NO >>

Replace ICC sensor. Adjust laser beam aiming.

After that, erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC
system again.
DTC 109 LASER HIGH TEMPAKS006ZM
1. CHECK SYMPTOM

Is cooling system malfunctioning?
YES or NO
YES >>
Repair cooling system.

After that, erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC
system again.
NO >>

Replace ICC sensor, and adjust laser beam aiming.

After repair, erase DTC. Then perform ICC system running test, and perform self-diagnosis of
ICC unit.

AT-8
PRECAUTIONS
Revision: 2004 November 2004 FX35/FX45
Precautions ACS002L6

Before connecting or disconnecting the A/T assembly har-
ness connector, turn ignition switch “OFF” and disconnect
the battery cable from the negative terminal. Because bat-
tery voltage is applied to TCM even if ignition switch is
turned “OFF”.

After performing each TROUBLE DIAGNOSIS, perform
“DTC (Diagnostic Trouble Code) Confirmation Procedure”.
If the repair is completed the DTC should not be displayed
in the “DTC Confirmation Procedure”.

Always use the specified brand of ATF. Refer to MA-12, "Fluids and Lubricants" .

Use paper rags not cloth rags during work.

After replacing the ATF, dispose of the waste oil using the methods prescribed by law, ordinance, etc.

Before proceeding with disassembly, thoroughly clean the outside of the transmission. It is important to
prevent the internal parts from becoming contaminated by dirt or other foreign matter.

Disassembly should be done in a clean work area.

Use lint-free cloth or towels for wiping parts clean. Common shop rags can leave fibers that could interfere
with the operation of the transmission.

Place disassembled parts in order for easier and proper assembly.

All parts should be carefully cleaned with a general purpose, non-flammable solvent before inspection or
reassembly.

Gaskets, seals and O-rings should be replaced any time the transmission is disassembled.

It is very important to perform functional tests whenever they are indicated.

The valve body contains precision parts and requires extreme care when parts are removed and serviced.
Place disassembled valve body parts in order for easier and proper assembly. Care will also prevent
springs and small parts from becoming scattered or lost.

Properly installed valves, sleeves, plugs, etc. will slide along bores in valve body under their own weight.

Before assembly, apply a coat of recommended ATF to all parts. Apply petroleum jelly to protect O-rings
and seals, or hold bearings and washers in place during assembly. Do not use grease.

Extreme care should be taken to avoid damage to O-rings, seals and gaskets when assembling.

After overhaul, refill the transmission with new ATF.

When the A/T drain plug is removed, only some of the fluid is drained. Old A/T fluid will remain in torque
converter and ATF cooling system.
Always follow the procedures under “Changing A/T Fluid” in the AT section when changing A/T fluid. Refer
to AT- 1 2 , "
Changing A/T Fluid" , AT- 1 2 , "Checking A/T Fluid" .
SEF289H
SEF217U

A/T FLUID
AT-13
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Revision: 2004 November 2004 FX35/FX45
e. Re-insert A/T fluid level gauge into A/T fluid charging pipe as far as it will go.
CAUTION:
To check fluid level, insert the A/T fluid level gauge until the cap contacts the end of the A/T fluid
charging pipe, with the A/T fluid level gauge reversed from the normal attachment conditions.
f. Remove A/T fluid level gauge and note reading. If reading is at low side of range, add fluid to the A/T fluid
charging pipe.
CAUTION:
Do not overfill.
5. Drive vehicle for approximately 5 minutes in urban areas.
6. Make the fluid temperature approximately 65°C (149°F).
NOTE:
Fluid level will be greatly affected by temperature as shown in the figure. Therefore, be certain to
perform level check operation checking warm up condition with CONSULT-II.
a. Connect CONSULT-II to data link connector.
b. Select “MAIN SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-II.
c. Read out the value of “ATF TEMP 1”.
7. Re-check fluid level at fluid temperatures of approximately 65°C (149°F) using “HOT” range on A/T fluid
level gauge.
CAUTION:

When wiping away the A/T fluid level gauge, always use lint-free paper, not a cloth one.

To check fluid level, insert the A/T fluid level gauge until
the cap contacts the end of the A/T fluid charging pipe,
with the gauge rotated from the normal attachment condi-
tions as shown.
8. Check fluid condition.

If fluid is very dark or smells burned, check operation of A/T.
Flush cooling system after repair of A/T.

If ATF contains frictional material (clutches, bands, etc.),
replace radiator and flush cooler line using cleaning solvent
and compressed air after repair of A/T. Refer to CO-14,
"RADIATOR" (for VQ35DE) or CO-39, "RADIATOR" (for
VK45DE) and AT- 1 4 , "
A/T Fluid Cooler Cleaning" .
9. Install the removed A/T fluid level gauge in the A/T fluid charging pipe.
SLIA0016E
SCIA2899E

A/T CONTROL SYSTEM
AT-37
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Revision: 2004 November 2004 FX35/FX45
FUNCTION OF ATF PRESSURE SWITCH
Input clutch control valveWhen the input clutch is coupled, adjusts the line pressure to the optimum pressure
(input clutch pressure) and supplies it to the input clutch. (In 4th and 5th gears, adjusts
the clutch pressure.)
Direct clutch control valveWhen the direct clutch is coupled, adjusts the line pressure to the optimum pressure
(direct clutch pressure) and supplies it to the direct clutch. (In 2nd, 3rd, and 4th gears,
adjusts the clutch pressure.)
TCC control valve
TCC control plug
TCC control sleeveSwitches the lock-up to operating or released. Also, by performing the lock-up operation
transiently, lock-up smoothly.
Torque converter lubrication valveOperates during lock-up to switch the torque converter, cooling, and lubrication system
oil path.
Cool bypass valve Allows excess oil to bypass cooler circuit without being fed into it.
Line pressure relief valve Discharges excess oil from line pressure circuit.
N-D accumulator Produces the stabilizing pressure for when N-D is selected.
Manual valveSends line pressure to each circuit according to the select position. The circuits to which
the line pressure is not sent drain. Name Function
Name Function
ATF pressure switch 1 (FR/B)Detects any malfunction in the front brake hydraulic pressure. When it detects any mal-
function, it puts the system into fail-safe mode.
ATF pressure switch 2 (LC/B)Detects any malfunction in the low coast brake hydraulic pressure. When it detects any
malfunction, it puts the system into fail-safe mode.
ATF pressure switch 3 (I/C)Detects any malfunction in the input clutch hydraulic pressure. When it detects any mal-
function, it puts the system into fail-safe mode.
ATF pressure switch 5 (D/C)Detects any malfunction in the direct clutch hydraulic pressure. When it detects any mal-
function, it puts the system into fail-safe mode.
ATF pressure switch 6 (HLR/C)Detects any malfunction in the high and low reverse clutch hydraulic pressure. When it
detects any malfunction, it puts the system into fail-safe mode.

ATC-2Revision: 2004 November 2004 FX35/FX45DUAL SWITCH (WITH LEFT AND RIGHT VEN-
TILATION TEMPERATURE SEPARATELY
CONTROL SYSTEM) .......................................... 35
Fail-safe Function ................................................... 36
Discharge Air Flow ................................................. 37
System Description ................................................. 38
SWITCHES AND THEIR CONTROL FUNCTION ... 38
CAN Communication System Description .............. 39
TROUBLE DIAGNOSIS ............................................ 40
CONSULT-II ............................................................ 40
CONSULT-II BASIC OPERATION ....................... 40
DATA MONITOR .................................................. 41
How to Perform Trouble Diagnosis for Quick and
Accurate Repair ...................................................... 42
WORK FLOW ...................................................... 42
SYMPTOM TABLE .............................................. 42
Component Parts and Harness Connector Location ... 43
ENGINE COMPARTMENT .................................. 43
PASSENGER COMPARTMENT .......................... 44
Schematic ............................................................... 45
Wiring Diagram —A/C— ......................................... 46
Auto Amp. Terminals and Reference Value ............ 51
PIN CONNECTOR TERMINAL LAYOUT ............ 51
TERMINALS AND REFERENCE VALUE FOR
UNIFIED METER AND A/C AMP. ........................ 51
Self-diagnosis Function .......................................... 53
DESCRIPTION .................................................... 53
FUNCTION CONFIRMATION PROCEDURE ...... 54
AUXILIARY MECHANISM: TEMPERATURE
SETTING TRIMMER ........................................... 59
AUXILIARY MECHANISM: FOOT POSITION
SETTING TRIMMER ........................................... 60
AUXILIARY MECHANISM: INLET PORT MEM-
ORY FUNCTION ................................................. 60
Operational Check .................................................. 61
CHECKING MEMORY FUNCTION ..................... 61
CHECKING BLOWER ......................................... 61
CHECKING DISCHARGE AIR ............................ 61
CHECKING RECIRCULATION ............................ 62
CHECKING TEMPERATURE DECREASE ......... 62
CHECKING TEMPERATURE INCREASE .......... 62
CHECK A/C SWITCH .......................................... 62
CHECKING AUTO MODE ................................... 63
Power Supply and Ground Circuit for Auto Amp. ... 63
INSPECTION FLOW ........................................... 63
COMPONENT DESCRIPTION ............................ 64
DIAGNOSTIC PROCEDURE FOR A/C SYSTEM ... 64
LAN System Circuit ................................................ 66
DIAGNOSTIC PROCEDURE FOR LAN CIR-
CUIT .................................................................... 66
Mode Door Motor Circuit ........................................ 70
INSPECTION FLOW ........................................... 70
SYSTEM DESCRIPTION .................................... 71
COMPONENT DESCRIPTION ............................ 72
DIAGNOSTIC PROCEDURE FOR MODE
DOOR MOTOR ................................................... 72
Air Mix Door Motor Circuit ...................................... 73
INSPECTION FLOW ........................................... 73SYSTEM DESCRIPTION ..................................... 74
COMPONENT DESCRIPTION ............................ 75
DIAGNOSTIC PROCEDURE FOR AIR MIX
DOOR .................................................................. 75
Air Mix Door Motor PBR Circuit .............................. 75
DIAGNOSTIC PROCEDURE FOR AIR MIX
DOOR PBR .......................................................... 75
Intake Door Motor Circuit ........................................ 76
INSPECTION FLOW ............................................ 76
SYSTEM DESCRIPTION ..................................... 77
COMPONENT DESCRIPTION ............................ 78
DIAGNOSTIC PROCEDURE FOR INTAKE
DOOR MOTOR .................................................... 78
Blower Motor Circuit ................................................ 79
INSPECTION FLOW ............................................ 79
SYSTEM DESCRIPTION ..................................... 80
COMPONENT DESCRIPTION ............................ 81
DIAGNOSTIC PROCEDURE FOR BLOWER
MOTOR ................................................................ 81
COMPONENT INSPECTION ............................... 83
Magnet Clutch Circuit .............................................. 84
INSPECTION FLOW ............................................ 84
SYSTEM DESCRIPTION ..................................... 85
DIAGNOSTIC PROCEDURE FOR MAGNET
CLUTCH .............................................................. 85
COMPONENT INSPECTION ............................... 90
Insufficient Cooling .................................................. 91
INSPECTION FLOW ............................................ 91
PERFORMANCE TEST DIAGNOSIS .................. 93
PERFORMANCE CHART .................................... 95
TROUBLE DIAGNOSIS FOR UNUSUAL PRES-
SURE ................................................................... 96
DIAGNOSTIC PROCEDURE FOR INSUFFI-
CIENT COOLING ................................................. 98
Insufficient Heating ...............................................100
INSPECTION FLOW ..........................................100
Noise .....................................................................101
INSPECTION FLOW ..........................................101
Self-diagnosis .......................................................102
INSPECTION FLOW ..........................................102
Memory Function ..................................................103
INSPECTION FLOW ..........................................103
Ambient Sensor Circuit .........................................104
COMPONENT DESCRIPTION ..........................104
AMBIENT TEMPERATURE INPUT PROCESS .104
DIAGNOSTIC PROCEDURE FOR AMBIENT
SENSOR ............................................................104
COMPONENT INSPECTION .............................106
In-vehicle Sensor Circuit .......................................107
COMPONENT DESCRIPTION ..........................107
DIAGNOSTIC PROCEDURE FOR IN-VEHICLE
SENSOR ............................................................108
COMPONENT INSPECTION .............................109
Sunload Sensor Circuit .........................................110
COMPONENT DESCRIPTION ..........................110
SUNLOAD INPUT PROCESS ...........................110
DIAGNOSTIC PROCEDURE FOR SUNLOAD
SENSOR ............................................................110