changing INFINITI FX35 2008 Owner's Guide

DTC P1217 ENGINE OVER TEMPERATUREEC-445
< SERVICE INFORMATION > [VQ35DE]
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Check the following.
 Harness connectors E29, E121
 Harness for open or short between cooling fan motor-2 and IPDM E/R
>> Repair open circuit or short to ground or short to power in harness or connectors.
12.CHECK COOLING FAN MOTORS
Refer to EC-446, "
Component Inspection".
OK or NG
OK >> GO TO 13.
NG >> Replace malfunctioning cooling fan motors.
13.CHECK INTERMITTENT INCIDENT
Perform EC-139
.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-17.
NG >> Repair or replace harness or connector.
Main 12 Causes of OverheatingINFOID:0000000001326297
*1: Turn the ignition switch ON.
*2: Engine running at 3,000 rpm for 10 minutes.
*3: Drive at 90 km/h (55 MPH) for 30 minutes and then let idle for 10 minutes.
*4: After 60 minutes of cool down time.
For more information, refer to CO-7
.
Engine Step Inspection item Equipment Standard Reference page
OFF 1  Blocked radiator  Blocked condenser
 Blocked radiator grille
 Blocked bumper  Visual No blocking —
2  Coolant mixture  Coolant tester 50 - 50% coolant mixture MA-10, "
Anti-Freeze
Coolant Mixture Ratio"
3  Coolant level  Visual Coolant up to MAX level in
reservoir tank and radiator
filler neckCO-10, "Changing Engine
Coolant"
4  Radiator cap  Pressure tester 59 - 98 kPa
(0.6 - 1.0 kg/cm2, 9 - 14
psi) (Limit) CO-14, "
Checking Radia-
tor Cap"
ON*25  Coolant leaks  Visual No leaks
CO-10, "Inspection"
ON*26  Thermostat  Touch the upper and
lower radiator hosesBoth hoses should be hot
CO-27
ON*17  Cooling fan  CONSULT-III Operating See trouble diagnosis for
DTC P1217 (EC-437
).
OFF 8  Combustion gas leak  Color checker chemical tester 4 Gas analyzerNegative —
ON*
39  Coolant temperature gauge  Visual Gauge less than 3/4 when
driving —
 Coolant overflow to res- ervoir tank  Visual No overflow during driving
and idling CO-10, "
Changing Engine
Coolant"
OFF*410  Coolant return from res-
ervoir tank to radiator  Visual Should be initial level in
reservoir tank CO-10, "Changing Engine
Coolant"
OFF 11  Cylinder head  Straight gauge feeler
gauge0.1 mm (0.004 in) Maxi-
mum distortion (warping) EM-101, "Removal and
Installation"
12  Cylinder block and pis-
tons  Visual No scuffing on cylinder
walls or piston EM-122
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EC-712
< SERVICE INFORMATION >[VK45DE]
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
Check “A/F ALPHA-B1”, “A/F ALPHA-B2” for approximat
ely 1 minute because they may fluctuate. It is NG
if the indication is out of the SP value even a little.
OK or NG
OK >> GO TO 17.
NG (Less than the SP value)>>GO TO 2.
NG (More than the SP value)>>GO TO 3.
2.CHECK “B/FUEL SCHDL”
Select “B/FUEL SCHDL” in “SPEC” of “DATA MONITOR” mode, and make sure that the indication is within the
SP value.
OK or NG
OK >> GO TO 4.
NG (More than the SP value)>>GO TO 19.
3.CHECK “B/FUEL SCHDL”
Select “B/FUEL SCHDL” in “SPEC” of “DATA MONITOR” mode, and make sure that the indication is within the
SP value.
OK or NG
OK >> GO TO 6.
NG (More than the SP value)>>GO TO 6.
NG (Less than the SP value)>>GO TO 25.
4.CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”
1. Stop the engine.
2. Disconnect PCV hose, and then plug it.
3. Start engine.
4. Select “A/F ALPHA-B1”, “A/F AL PHA-B2” in “SPEC” of “DATA MONITOR” mode, and make sure that the
each indication is within the SP value.
OK or NG
OK >> GO TO 5.
NG >> GO TO 6.
5.CHANGE ENGINE OIL
1. Stop the engine.
2. Change engine oil. NOTE:
This symptom may occur when a large amount of gasoline is mixed with engine oil because of driving
conditions (such as when engine oil temperature does not rise enough since a journey distance is too
short during winter). The symptom will not be detec ted after changing engine oil or changing driving con-
dition.
>>INSPECTION END
6.CHECK FUEL PRESSURE
Check fuel pressure. (Refer to EC-665, "
Fuel Pressure Check".)
OK or NG
OK >> GO TO 9.
NG (Fuel pressure is too high)>>Replace fuel pressure regulator, refer to EC-665, "
Fuel Pressure Check".
GO TO 8.
NG (Fuel pressure is too low)>>GO TO 7.
7.DETECT MALFUNCTIONING PART
1. Check the following.
- Clogged and bent fuel hose and fuel tube
- Clogged fuel filter
- Fuel pump and its circuit (Refer to EC-1155
.)
2. If NG, repair or replace the malfunctioning part. (Refer to EC-665, "
Fuel Pressure Check".)
If OK, replace fuel pressure regulator.
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EC-906
< SERVICE INFORMATION >[VK45DE]
DTC P0335 CKP SENSOR (POS)
DTC P0335 CKP SENSOR (POS)
Component DescriptionINFOID:0000000001326738
The crankshaft position sensor (P
OS) is located on the A/T assem-
bly facing the gear teeth (cogs) of the signal plate. It detects the fluc-
tuation of the engine revolution.
The sensor consists of a permanent magnet and Hall IC.
When the engine is running, the high and low parts of the teeth
cause the gap with the sensor to change.
The changing gap causes the magnetic field near the sensor to
change.
Due to the changing magnetic field, the voltage from the sensor
changes.
The ECM receives the voltage signal and detects the fluctuation of
the engine revolution.
ECM receives the signals as shown in the figure.
CONSULT-III Reference Value in Data Monitor ModeINFOID:0000000001326739
Specification data are reference values.
On Board Diagn osis LogicINFOID:0000000001326740
DTC Confirmation ProcedureINFOID:0000000001326741
NOTE:
If DTC Confirmation Procedure has been previously conduc ted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following pro cedure, confirm that battery voltage is more than 10.5V with igni-
tion switch ON.
1. Crank engine for at least 2 seconds and run it for at least 5 seconds at idle speed.
2. Check 1st trip DTC.
PBIB0562E
PBIB3459E
MONITOR ITEM CONDITION SPECIFICATION
ENG SPEED  Run engine an d compare CONSULT-III value with the tachometer indication.Almost the same speed as
the tachometer indication.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0335
0335 Crankshaft position sen-
sor (POS) circuit  The crankshaft position sensor (POS) signal
is not detected by the ECM during the first
few seconds of engine cranking.
 The proper pulse signal from the crankshaft position sensor (POS) is not sent to ECM
while the engine is running.
 The crankshaft position sensor (POS) signal is not in the normal pattern during engine run-
ning.  Harness or connectors
(The sensor circuit is open or shorted)
 Crankshaft position sensor (POS)
 Signal plate
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DTC P0340 CAMSHAFT POSITION (CMP) SENSOR (PHASE)
EC-911
< SERVICE INFORMATION > [VK45DE]
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DTC P0340 CAMSHAFT POSITI
ON (CMP) SENSOR (PHASE)
Component DescriptionINFOID:0000000001326746
The camshaft position sensor (P HASE) senses the protrusion of
exhaust camshaft sprocket to identif y a particular cylinder. The cam-
shaft position sensor (PHASE ) senses the piston position.
When the crankshaft position sensor (POS) system becomes inoper-
ative, the camshaft position sensor (PHASE) provides various con-
trols of engine parts instead, utilizing timing of cylinder identification
signals.
The sensor consists of a permanent magnet and Hall IC.
When engine is running, the high and low parts of the teeth cause
the gap with the sensor to change.
The changing gap causes the magnetic field near the sensor to
change.
Due to the changing magnetic field, the voltage from the sensor changes.
ECM receives the signals as shown in the figure.
CONSULT-III Reference Val ue in Data Monitor ModeINFOID:0000000001326747
Specification data are reference values.
On Board Diagnosis LogicINFOID:0000000001326748
DTC Confirmation ProcedureINFOID:0000000001326749
NOTE:
If DTC Confirmation Procedure has been previously conduc ted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm th at battery voltage is more than 10.5V with igni-
tion switch ON.
1. Crank engine for at least 2 seconds and run it for at least 5 seconds at idle speed.
2. Check 1st trip DTC.
3. If 1st trip DTC is detected, go to EC-913, "
Diagnosis Procedure".
PBIB0562E
PBIB3459E
MONITOR ITEM CONDITION SPECIFICATION
ENG SPEED  Run engine and compare CONSULT-III value with the tachometer indication. Almost the same speed as
the tachometer indication.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0340
0340 Camshaft position sen-
sor (PHASE) circuit  The cylinder No. signal is not sent to ECM for
the first few seconds during engine cranking.
 The cylinder No. signal is not sent to ECM during engine running.
 The cylinder No. signal is not in the normal
pattern during engine running.  Harness or connectors
(The sensor circuit is open or shorted)
 Camshaft position sensor (PHASE)
 Camshaft sprocket (Exhaust)
 Starter motor (Refer to SC-8
.)
 Starting system circuit (Refer to SC-8
.)
 Dead (Weak) battery
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DTC P1217 ENGINE OVER TEMPERATUREEC-1031
< SERVICE INFORMATION > [VK45DE]
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COMPONENT DESCRIPTION
Cooling Fan Motor
The cooling fan at each speed when the current
flows in the cooling fan motor as follows.
CONSULT-III Reference Value in Data Monitor ModeINFOID:0000000001326897
Specification data are reference values.
On Board Diagnosis LogicINFOID:0000000001326898
If the cooling fan or another component in the cooling system malfunctions, engine coolant temperature will
rise.
When the engine coolant temperature reaches an abnorma lly high temperature condition, a malfunction is
indicated.
This self-diagnosis has the on e trip detection logic.
CAUTION:
When a malfunction is in dicated, be sure to replace the coolant. Refer to CO-37, "
Changing Engine
Coolant". Also, replace the engine oil. Refer to LU-24, "Changing Engine Oil".
1. Fill radiator with coolant up to specified level with a filling speed of 2 liters per minute. Be sure to
use coolant with the proper mixture ratio. Refer to MA-10, "
Anti-Freeze Coolant Mixture Ratio".
Cooling fan speed Cooling fan relay
13
Stop (OFF) OFF OFF
Middle (MID) OFF ON
High (HI) ON ON
Cooling fan speed Cooling fan motor terminals
(+) (-)
Middle (MID) 1 3 and 4
2 3 and 4
High (HI) 1 and 2 3 and 4
MONITOR ITEM CONDITION SPECIFICATION
COOLING FAN  Engine: After warming up, idle the
engine
 Air conditioner switch: OFF Engine coolant temperature is 94
°C
(201 °F) or less OFF
Engine coolant temperature is between
95 °C (203 °F) and 104 °C (219 °F) MID
Engine coolant temperature is 105 °C
(221 °F) or more HI
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1217
1217 Engine over tempera-
ture (Overheat)  Cooling fan does not operate properly (Over-
heat).
 Cooling fan system does not operate proper- ly (Overheat).
 Engine coolant was not added to the system using the proper filling method.
 Engine coolant is not within the specified
range.  Harness or connectors
(The cooling fan circuit is open or short-
ed.)
 IPDM E/R
 Cooling fan
 Radiator hose
Radiator
Radiator cap
 Water pump
Thermostat
 Water control valve
For more informat ion, refer to EC-1039,
"Main 13 Causes of Overheating".
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EM-1
ENGINE
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SECTION EM
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CONTENTS
ENGINE MECHANICAL
VQ35DE
SERVICE INFORMATION .. ..........................
4
PRECAUTIONS .............................................. .....4
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ............................... ......
4
Precaution for Drain Engine Coolant and Engine
Oil ..............................................................................
4
Precaution for Disconnecting Fuel Piping .................4
Precaution for Removal and Disassembly ................4
Precaution for Inspection, Repair and Replace-
ment ..........................................................................
4
Precaution for Assembly and Installation ..................5
Precaution for Angle Tightening ................................5
Precaution for Liquid Gasket .....................................5
PREPARATION ...................................................7
Special Service Tool ........................................... ......7
Commercial Service Tool ..........................................9
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING ............................
12
NVH Troubleshooting - Engine Noise ................. ....12
Use the Chart Below to Help You Find the Cause
of the Symptom .......................................................
12
DRIVE BELTS ....................................................14
Checking Drive Belts ........................................... ....14
Tension Adjustment ................................................14
Removal and Installation .........................................15
AIR CLEANER AND AIR DUCT ........................17
Component .......................................................... ....17
Removal and Installation .........................................17
Changing Air Cleaner Filter .....................................18
INTAKE MANIFOLD COLLECTOR ...................19
Component .......................................................... ....19
Removal and Installation .........................................19
INTAKE MANIFOLD ...........................................24
Component .......................................................... ....24
Removal and Installation .........................................24
EXHAUST MANIFOLD AND THREE WAY
CATALYST ........................................................
26
Component ..............................................................26
Removal and Installation .........................................26
OIL PAN AND OIL STRAINER .........................30
Component (2WD Models) ......................................30
Removal and Installation (2WD Models) .................30
Component (AWD Models) ......................................35
Removal and Installation (AWD Models) .................36
IGNITION COIL .................................................42
Component ..............................................................42
Removal and Installation .........................................42
SPARK PLUG (PLATINUM-TIPPED TYPE) .....43
Component ..............................................................43
Removal and Installation .........................................43
FUEL INJECTOR AND FUEL TUBE ................45
Component ..............................................................45
Removal and Installation .........................................45
ROCKER COVER .............................................51
Component ..............................................................51
Removal and Installation .........................................51
FRONT TIMING CHAIN CASE .........................54
Removal and Installation .........................................54
TIMING CHAIN ..................................................64
Component .......................................................... ....64
Removal and Installation .........................................65
CAMSHAFT .......................................................83
Component ..............................................................83
Removal and Installation .........................................84
Valve Clearance ......................................................91
OIL SEAL ..........................................................97
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EM-2
Removal and Installation of Valve Oil Seal .............97
Removal and Installation of Front Oil Seal .............97
Removal and Installation of Rear Oil Seal ..............98
CYLINDER HEAD ............................................100
On-Vehicle Service .............................................. ..100
Component ............................................................101
Removal and Installation .......................................101
Disassembly and Assembly ...................................105
Inspection After Disassembly ................................107
ENGINE ASSEMBLY .......................................112
Component (2WD Models) .................................. ..112
Removal and Installation (2WD Models) ...............112
Component (AWD Models) ....................................117
Removal and Installation (AWD Models) ...............117
CYLINDER BLOCK .........................................122
Component .......................................................... ..122
Disassembly and Assembly ...................................123
How to Select Piston and Bearing .........................134
Inspection After Disassembly ................................138
SERVICE DATA AND SPECIFICATIONS
(SDS) ................................................................
149
Standard and Limit .............................................. ..149
VK45DE
SERVICE INFORMATION ..........................
160
PRECAUTIONS .............................................. .160
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ............................... ..
160
Precaution for Drain Engine Coolant and Engine
Oil ..........................................................................
160
Precaution for Disconnecting Fuel Piping ..............160
Precaution for Removal and Disassembly .............160
Precaution for Inspection, Repair and Replace-
ment .......................................................................
160
Precaution for Assembly and Installation ..............161
Parts Requiring Angle Tightening ..........................161
Precaution for Liquid Gasket .................................161
PREPARATION .............................................. .163
Special Service Tool ............................................ ..163
Commercial Service Tool ......................................164
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING ..........................
167
NVH Troubleshooting - Engine Noise .................. ..167
Use the Chart Below to Help You Find the Cause
of the Symptom .....................................................
167
ENGINE ROOM COVER ..................................169
Component .......................................................... ..169
Removal and Installation .......................................169
DRIVE BELTS ..................................................170
Component .......................................................... ..170
Checking Drive Belts .............................................170
Tension Adjustment ...............................................170
Removal and Installation ...................................... .170
Component ...........................................................171
Drive Belt Auto Tensioner and Idler Pulley ...........172
AIR CLEANER AND AIR DUCT .......................173
Component .......................................................... .173
Removal and Installation .......................................173
Changing Air Cleaner Filter ...................................174
INTAKE MANIFOLD .........................................175
Component .......................................................... .175
Removal and Installation .......................................176
EXHAUST MANIFOLD AND THREE WAY
CATALYST .......................................................
179
Component .......................................................... .179
Removal and Installation .......................................179
OIL PAN AND OIL STRAINER ........................183
Component .......................................................... .183
Removal and Installation .......................................183
IGNITION COIL .................................................187
Component .......................................................... .187
Removal and Installation .......................................187
SPARK PLUG (PLATINUM-TIPPED TYPE) ....188
Component .......................................................... .188
Removal and Installation .......................................188
FUEL INJECTOR AND FUEL TUBE ................190
Component .......................................................... .190
Removal and Installation .......................................190
ROCKER COVER .............................................196
Component .......................................................... .196
Removal and Installation .......................................196
TIMING CHAIN .................................................199
Component .......................................................... .199
Removal and Installation .......................................200
CAMSHAFT ......................................................211
Component .......................................................... .211
Removal and Installation .......................................211
Valve Clearance ....................................................218
OIL SEAL ..........................................................222
Removal and Installation of Valve Oil Seal ...........222
Removal and Installation of Front Oil Seal ........... .222
Removal and Installation of Rear Oil Seal ............224
CYLINDER HEAD .............................................226
On-Vehicle Service .............................................. .226
Component ...........................................................227
Removal and Installation .......................................227
Disassembly and Assembly ..................................229
Inspection After Disassembly ................................232
ENGINE ASSEMBLY ..................................... ..237
Component .......................................................... .237
Removal and Installation .......................................237
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EM-18
< SERVICE INFORMATION >[VQ35DE]
AIR CLEANER AND AIR DUCT
INSTALLATION
Note the following, and install in the reverse order of removal.
 Align marks. Attach each joint. Screw clamps firmly.
 To position air cleaner case, refer to
EM-18, "
Changing Air Cleaner Filter".
Changing Air Cleaner FilterINFOID:0000000001325709
INSPECTION
Check status (fouling, damage, etc.) of air cleaner filter at power duct
hole.
REMOVAL
Removal in the order below.
1. Remove air duct (inlet) from air cleaner case.
2. Disconnect harness connector from mass air flow sensor.
3. Loosen clamp bolts of air hose.
4. Remove mounting bolts for air cleaner case. Remove air cleaner
case/mass air flow sensor/air hose assembly.
5. Unhook clips and open air cleaner case, and remove air cleaner filter.
INSTALLATION
Note the following, and install in the reverse order of removal.
 If grommet at bottom of air cleaner case comes off together with air
cleaner case, fix it to vehicle before installation.
 Look at internal bottom face through power duct hole, and position air cleaner case with resonator upper end circle and air cleaner
case round hole aligned. Then push air cleaner case straight
down.
 At this time, check by hand if protrusion at bottom of air cleaner
case has been inserted into grommet on vehicle side.
 Clip power duct with bulge on reverse side of lower end engaged with air cleaner case.
SBIA0463E
SBIA0464E
KBIA0954E
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EM-26
< SERVICE INFORMATION >[VQ35DE]
EXHAUST MANIFOLD AND THREE WAY CATALYST
EXHAUST MANIFOLD AND THREE WAY CATALYST
ComponentINFOID:0000000001325714
 Refer to
GI-8, "Component" for symbols in the figure.
Removal and InstallationINFOID:0000000001325715
REMOVAL
WARNING:
Perform the work when the exhaust and co oling system have completely cooled down.
1. Remove engine cover with power tool. Refer to EM-19, "
Component".
2. Drain engine coolant. Refer to CO-10, "
Changing Engine Coolant".
CAUTION:
 Perform this step when the engine is cold.
 Do not spill engine coolant on drive belts.
3. Remove air cleaner case and air duct. Refer to EM-17, "
Component".
4. Remove front and rear engine undercover and front cross bar with power tool.
5. Disconnect heated oxygen sensors 2 ( bank 1 and bank 2) harness connectors.
1. Heated oxygen sensor 2 (bank 1) 2. Three way catalyst (right bank) 3. Gasket
4. Air fuel ratio sensor 1 (bank 1) 5. Exhaust manifold cover (right bank) 6. Exhaust manifold (right bank)
7. Exhaust manifold (left bank) 8. Exhaust manifold cover (left bank) 9. Three way catalyst (left bank)
10. Air fuel ratio sensor 1 (bank 2) 11. Heated oxygen sensor 2 (bank 2)
JPBIA0829GB
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EM-30
< SERVICE INFORMATION >[VQ35DE]
OIL PAN AND OIL STRAINER
OIL PAN AND OIL STRAINER
Component (2WD Models)INFOID:0000000001325716
Removal and Installation (2WD Models)INFOID:0000000001325717
REMOVAL
CAUTION:
To avoid the danger of being scalded, never
drain engine oil when the engine is hot.
NOTE:
To remove oil pan (lower) only, take step 5, then st ep 20. Removal of step 1, hood assembly (step 2) and step
4 are unnecessary.
1. Remove front tire.
2. Remove hood assembly. Refer to BL-13, "
Fitting Adjustment".
3. Remove front and rear engine undercover with power tool.
4. Remove front cross bar with power tool. FSU-5, "
On-Vehicle Inspection and Service".
5. Drain engine oil. Refer to LU-7, "
Changing Engine Oil".
CAUTION:
 Perform this step when the engine is cold.
1. Oil pan gasket (rear) 2. Oil pan (upper) 3. O-ring
4. Oil pan gasket (front) 5. Oil filter 6. Connector bolt
7. Oil cooler 8. O-ring 9. Relief valve
10. Oil pressure switch 11. Bracket 12. Oil strainer
13. Drain plug 14. Drain plug washer 15. Oil pan (lower)
16. Rear plate cover 17. Crankshaft position sensor (POS) 18. Seal rubber
19. Rear cover plate
SBIA0587E
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