2006 INFINITI FX35 engine cooling

ENGINE ASSEMBLY EM-117
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Revision: 2006 December 2006 FX35/FX45

When installing engine mounting bracket (RH and LH) on cylin-
der block, tighten two upper bolts (shown as “A” in the figure)
first. Then tighten two lower bolts (shown as “B” in the figure).

Make sure all engine mounting insulators are seated properly, then tighten mounting nuts.

Tighten rear engine mounting member bolts in numerical order
as shown in the figure.
INSPECTION AFTER INSTALLATION
Inspection for Leaks
The following are procedures for checking fluids leak, lubricates leak and exhaust gases leak.

Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-12, "
RECOMMENDED FLUIDS AND LUBRICANTS" .

Use procedure below to check for fuel leakage.
–Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel
leakage at connection points.
–Start engine. With engine speed increased, check again for fuel leakage at connection points.

Run engine to check for unusual noise and vibration.

Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gases, or any oil/fluids
including engine oil and engine coolant.

Bleed air from lines and hoses of applicable lines, such as in cooling system.

After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the
specified level, if necessary.
Summary of the inspection items:
* Transmission/transaxle/CVT fluid. power steering fluid, brake fluid, etc.
PBIC2062E
PBIC3040E
Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Other oils and fluid* Level Leakage Level
Fuel Leakage Leakage Leakage
Exhaust gases — Leakage —

EM-122
[VQ35DE]
ENGINE ASSEMBLY
Revision: 2006 December 2006 FX35/FX45

Do not allow engine mounting insulator to be damage and careful no engine oil gets on it.

For a location with a positioning pin, insert it securely into hole of mating part.

For a part with a specified installation orientation, refer to component figure in EM-118, "Components
(AWD Models)" .

When installing engine mounting bracket (RH and LH) on cylin-
der block, tighten two upper bolts (shown as “A” in the figure)
first. Then tighten two lower bolts (shown as “B” in the figure).

Install engine mounting bracket (RH) (lower) as follows:
–Temporarily tighten mounting bolts (shown as “C”, “D” and “E” in
the figure).
–Tighten mounting bolts to the specified torque with following
mounting surfaces touched.
 Engine mounting bracket (RH) to engine mounting bracket (RH) (lower) (shown as “C” and “D” in figure).
 Front final drive to engine mounting bracket (RH) (lower) (shown as “E” in figure).

Make sure all engine mounting insulators are seated properly,
then tighten mounting nuts.
INSPECTION AFTER INSTALLATION
Inspection for Leaks
The following are procedures for checking fluids leak, lubricates leak and exhaust gases leak.

Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-12, "
RECOMMENDED FLUIDS AND LUBRICANTS" .

Use procedure below to check for fuel leakage.
–Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel
leakage at connection points.
–Start engine. With engine speed increased, check again for fuel leakage at connection points.

Run engine to check for unusual noise and vibration.

Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gases, or any oil/fluids
including engine oil and engine coolant.

Bleed air from lines and hoses of applicable lines, such as in cooling system.

After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the
specified level, if necessary.
Summary of the inspection items:
* Transmission/transaxle/CVT fluid. power steering fluid, brake fluid, etc.
PBIC3042E
Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Other oils and fluid* Level Leakage Level
Fuel Leakage Leakage Leakage
Exhaust gases — Leakage —

ENGINE ROOM COVER EM-173
[VK45DE]
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Revision: 2006 December 2006 FX35/FX45
ENGINE ROOM COVERPFP:14049
ComponentsNBS003HM

Refer to GI-11, "Components" for symbol marks in the figure.
Removal and InstallationNBS003HN
REMOVAL
CAUTION:
Do not damage or scratch cover when installing or removing.

Major parts and inspection points under each cover are as follows; (numbered as in the figure)
INSTALLATION
Install in the reverse order of removal.
1. Mount nut 2. Battery cover 3. Air duct (inlet)
4. Clip 5. Engine cover
PBIC4550E
1 : Upper side of engine assembly and power steering reservoir tank
2 : Relay and battery
3 : Engine assembly front side, drive belts and cooling fan

EXHAUST MANIFOLD AND THREE WAY CATALYST EM-183
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Revision: 2006 December 2006 FX35/FX45
EXHAUST MANIFOLD AND THREE WAY CATALYSTPFP:14004
ComponentsNBS003HZ

Refer to GI-11, "Components" for symbol marks in the figure.
Removal and InstallationNBS003I0
REMOVAL
WARNING:
Perform the work, when the exhaust and cooling system have completely cooled down.
1. Remove engine cover with power tool. Refer to EM-173, "
ENGINE ROOM COVER" .
2. Remove front and rear engine undercovers with power tool.
3. Remove air duct (inlet), air cleaner case and mass air flow sensor assembly, air duct and resonator assembly. Refer to EM-177, "
AIR CLEANER AND AIR DUCT" .
4. Remove front cross bar. Refer to FSU-6, "
FRONT SUSPENSION ASSEMBLY" .
5. Drain engine coolant from radiator. Refer to CO-38, "
Changing Engine Coolant" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant on drive belts.
6. Remove radiator. Refer to CO-41, "
RADIATOR" .
1. Air fuel ratio sensor 1 (bank 2) 2. Exhaust manifold cover (right bank) 3. Exhaust manifold (right bank)
4. Gasket 5. Exhaust manifold (left bank) 6. Exhaust manifold cover (left bank)
7. Air fuel ratio sensor 1 (bank 1) 8. Three way catalyst cover (right bank) 9. Three way catalyst (right bank)
10. Heated oxygen sensor 2 (bank 2) 11. Gasket 12. Three way catalyst cover (left bank)
13. Heated oxygen sensor 2 (bank 1) 14. Three way catalyst (left bank) 15. Mounting bracket
16. Mounting bracket
A. Protrusion for installation confirma-
tion.
:Above
PBIC4549E

EM-214
[VK45DE]
TIMING CHAIN
Revision: 2006 December 2006 FX35/FX45
f. Further tighten by 90 degrees. (Angle tightening)

Check the tightening angle by referencing to the notches. The
angle between two notches is 90 degrees.
15. Rotate crankshaft pulley in normal direction (clockwise when viewed from engine front) to confirm it turns smoothly.
16. Install in the reverse order of removal after this step. NOTE:
If hydraulic pressure inside timing chain tensioner drops after removal/installation, slack in guide may gen-
erate a pounding noise during and just after engine start. However, this does not indicate an unusualness.
Noise will stop after hydraulic pressure rises.
INSPECTION AFTER INSTALLATION
Inspection for Leaks
The followings are procedures for checking fluids leak, lubricates leak and exhaust gases leak.

Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-12, "
RECOMMENDED FLUIDS AND LUBRICANTS"

Use procedure below to check for fuel leakage.
–Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel
leakage at connection points.
–Start engine. With engine speed increased, check again for fuel leakage at connection points.

Run engine to check for unusual noise and vibration.

Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gases, or any oil/fluids
including engine oil and engine coolant.

Bleed air from lines and hoses of applicable lines, such as in cooling system.

After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the
specified level, if necessary.
Summary of the inspection items:
* Transmission/transaxle/CVT fluid. power steering fluid, brake fluid, etc.
PBIC2346E
Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Other oils and fluid* Level Leakage Level
Fuel Leakage Leakage Leakage
Exhaust gases — Leakage —

OIL SEAL EM-229
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Revision: 2006 December 2006 FX35/FX45
Removal and Installation of Front Oil SealNBS003IH
REMOVAL
1. Remove the following parts:

Front engine undercover

Radiator; Refer to CO-41, "RADIATOR"

Drive belt; Refer to EM-174, "DRIVE BELTS" .

Cooling fan; Refer to CO-49, "COOLING FAN" .

Rear plate cover; Refer to EM-187, "OIL PAN AND OIL STRAINER" .
2. Remove crankshaft pulley as follows:
a. Set ring gear stopper (SST).
b. Loosen crankshaft pulley bolt, and then pull crankshaft pulley with both hands to remove it.
CAUTION:

Do not remove crankshaft pulley bolt. Keep loosened
crankshaft pulley bolt in place to protect removed crank-
shaft pulley from dropping.

Do not remove balance weight (inner hexagon bolt) at the
front of crankshaft pulley.
3. Remove front oil seal using suitable tool. CAUTION:
Be careful not to damage front cover and oil pump drive
spacer.
INSTALLATION
1. Apply new engine oil to both oil seal lip and dust seal lip of new front oil seal.
2. Install front oil seal.
PBIC1656E
SBIA0358E
SBIA0359E

ENGINE ASSEMBLY EM-247
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Revision: 2006 December 2006 FX35/FX45

Bleed air from lines and hoses of applicable lines, such as in cooling system.

After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the
specified level, if necessary.
Summary of the inspection items:
* Transmission/transaxle/CVT fluid. power steering fluid, brake fluid, etc. Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Other oils and fluid* Level Leakage Level
Fuel Leakage Leakage Leakage
Exhaust gases — Leakage —

IDX-3
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IDX
ALPHABETICAL INDEX
C
Camshaft inspection(VK45DE) ........................ EM-216
Camshaft inspection(VQ35DE) ......................... EM-85
Camshaft position sensor (PHASE) EC-368, EC-1037
Camshaft(VK45DE) ......................................... EM-215
Camshaft(VQ35DE) ........................................... EM-83
CAN .................................................................. DI-108
CAN - Wiring diagram ......... EC-157, EC-820, AT-105,
LAN-29
, LAN-49, LAN-69, LAN-91, LAN-117, LAN-139,
LAN-163
CAN (Controller Area Network) . BL-24, BL-57, BL-95,
BL-184
, GW-20, GW-68, RF-12, SE-16
CAN communication EC-38, EC-156, EC-159, EC-819,
EC-822
, AT-33, AT-104, TF-13, TF-32, WT-12, BL-24,
BL-57
, BL-95, BL-184, GW-20, GW-68, RF-12, SE-16
Canister-See EVAP canister ............... EC-42, EC-702
Center bearing assembly (propeller shaft) ........ PR-13
Center bearing disassembly (propeller shaft) .... PR-12
CHARGE - Wiring diagram ................................ SC-21
Charging system ................................................ SC-20
Chassis and body maintenance ........................ MA-29
CHIME - Wiring diagram ..................................... DI-61
Circuit breaker ................................................... PG-16
Clock ................................................................. DI-114
CLOCK - Wiring diagram .................................. DI-114
Closed loop control .............................. EC-32, EC-692
Closed loop control (Bank 1) ........... EC-494, EC-1168
Closed loop control (Bank 2) ........... EC-494, EC-1168
Collision diagnosis ........................................... SRS-50
Combination lamp, rear, removal and installation ........
LT-154
Combination meter ............................................... DI-5
Combination meter removal and installation - See
Instrument panel .................................................. IP-11
COMM - Wiring diagram ...................... AV-64, AV-108
COMPAS - Wiring diagram ............................... DI-112
Compass .......................................................... DI-109
Component Location (auto A/C) ...................... ATC-42
Compression pressure(VK45DE) .................... EM-232
Compression pressure(VQ35DE) .................... EM-101
Compressor clutch removal and installation .. ATC-142
Compressor special service tool ...................... ATC-17
Condenser ..................................................... ATC-153
Connecting rod bearing clearance(VK45DE) .. EM-272
Connecting rod bushing clearance .................. EM-143
Connecting rod bushing clearance(VK45DE) .. EM-267
Connecting rod(VK45DE) ................................ EM-267
Connecting rod(VQ35DE) ................................ EM-141
Console box - See Instrument panel ................... IP-10
CONSULT for VDC ......................................... BRC-24
CONSULT-II for engine ................................... EC-119
CONSULT-II Reference value (A/T) .................. AT-90
Control units (terminal arrangement) ................. PG-75
Control valve (A/T) ............................................. AT-38
Controller Area Network (CAN) . BL-24, BL-57, BL-95,
BL-184
, GW-20, GW-68, RF-12, SE-16
Converter housing installation ............ AT-268, AT-272
COOL/F - Wiring diagram ................ EC-501, EC-1175
Coolant replacement(VQ35DE) ........................ MA-15
Cooling circuit (engine)(VK45DE) ..................... CO-36
Cooling circuit (engine)(VQ35DE) ...................... CO-9
Cooling fan motor ............................ EC-508, EC-1182
Cooling fan(VK45DE) ....................................... CO-49
Cooling fan(VQ35DE) ....................................... CO-21
Cowl top .............................................................. EI-23
Cowl top cover .................................................... EI-23
Crankcase ventilation system - See Positive crankcase
ventilation ............................................. EC-51
, EC-711
Crankshaft position sensor (POS) ... EC-361, EC-1030
Crankshaft(VK45DE) ...................................... EM-249
Crankshaft(VQ35DE) ...................................... EM-141
Crash zone sensor .......................................... SRS-46
Cylinder block boring(VK45DE) ...................... EM-270
Cylinder block(VK45DE) ................................. EM-248
Cylinder block(VQ35DE) ................................. EM-123
Cylinder head bolt tightening(VK45DE) .......... EM-234
Cylinder head bolt tightening(VQ35DE) .......... EM-104
Cylinder head(VK45DE) ................................. EM-232
Cylinder head(VQ35DE) ................................. EM-101
D
D/LOCK - Wiring diagram ....................... BL-26
, BL-32
Diagnosis sensor unit ..................................... SRS-49
Diagnostic trouble code (DTC) for OBD system EC-15,
EC-676
, EC-719
Diagnostic trouble code (DTC) inspection priority chart
EC-94
Direct clutch solenoid valve ............... AT-154, AT-156
Display and amp.assembly ............... ATC-50, ATC-62
Door glass ........................................... GW-58, GW-62
Door glass Fitting Adjustment(Front) ................ GW-60
Door lock .......................................................... BL-152
Door mirror ........................................................ GW-92
Door trim ............................................................. EI-35
Door, front ........................................... BL-148, GW-58
Door, rear ............................................ BL-148, GW-62
Drive belt inspection ......................................... MA-22
Drive belt inspection(VQ35DE) ......................... MA-14
Drive belt(VK45DE) ........................................ EM-174
Drive belt(VQ35DE) .......................................... EM-15
Drive shaft ......................................................... MA-38
Drive shaft (rear) ............................................... RAX-9
Driver air bag .................................................. SRS-38
Duct and grilles .............................................. ATC-133
E
ECM input/output signal ................................... EC-110
ECM power supply ............ EC-477, EC-812, EC-1142
ECM/PW - Wiring diagram ............... EC-478, EC-1143
ECTS - Wiring diagram ...................... EC-212, EC-881
Electric sunroof .................................................. RF-10
Electric throttle control actuator ........ EC-562, EC-573,
EC-1240
, EC-1252
Electric throttle control actuator (VK45DE) ..... EM-179
Electric throttle control actuator (VQ35DE) ....... EM-19