battery INFINITI FX35 2008 Service Manual

VARIABLE INDUCTION AIR CONTROL SYSTEM (VIAS)
EC-1187
< SERVICE INFORMATION > [VK45DE]
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VARIABLE INDUCTION AI
R CONTROL SYSTEM (VIAS)
DescriptionINFOID:0000000001327082
SYSTEM DESCRIPTION
*: The ECM determines the start signal status by the signals of engine speed and battery voltage.
When the engine is running at low or medium speed, the power valve isfully closed. Under this condition, the
effective suction port length is equivalentto the total lengt h of the intake manifold collector's suction port includ-
ingthe intake valve. This long suction port provides incr eased air intake whichresults in improved suction effi-
ciency and higher torque generation.
The surge tank and one-way valve are provided. When engine is runningat high speed, the ECM sends the
signal to the VIAS control solenoid valve.This signal introduces the intake manifold vacuum into the power
valve actuatorand therefore opens the power valve to two suction passages together in thecollector.
Under this condition, the effective port length is equi valent to thelength of the suction port provided indepen-
dently for each cylinder. Thisshortened port length results in enhanced engine output with reduced suctionre-
sistance under high speeds.
The power valve is always open regardless of the engine speed when gear position is in N or P.
COMPONENT DESCRIPTION
Power Valve
Sensor Input signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE) Engine speed*
VIAS control VIAS control solenoid valve
Mass air flow sensor Amount of intake air
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Battery Battery voltage*
Engine coolant temperature sensor Engine coolant temperature
PBIB1876E
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EC-1190
< SERVICE INFORMATION >[VK45DE]
VARIABLE INDUCTION AIR CONTROL SYSTEM (VIAS)
Diagnosis Procedure
INFOID:0000000001327085
1.CHECK OVERALL FUNCTION
With CONSULT-III
1. Start engine and warm it up to normal operating temperature.
2. Perform “VIAS SOL VALVE” in “A CTIVE TEST” mode with CONSULT-III.
3. Turn VIAS control solenoid valve ON and OFF, and make sure that power valve actuator (1) rod moves.
Without CONSULT-III
1. Lift up the vehicle.
2. Start engine and warm it up to normal operating temperature.
3. Make sure that power valve actuator (1) rod moves when chang- ing the gear position to N and D alternately.
OK or NG
OK >> INSPECTION END
NG (With CONSULT-III)>>GO TO 2.
NG (Without CONSULT-III)>>GO TO 3.
2.CHECK VACUUM EXISTENCE
With CONSULT-III
1. Stop engine and disconnect vacuum hose connected to power valve actuator.
2. Start engine and let it idle.
3. Perform “VIAS SOL VALVE” in “A CTIVE TEST” mode with CONSULT-III.
4. Turn VIAS control solenoid valve “ON” and “OFF”, and check vacuum existence under the following condi-
tions.
TER-
MI-
NAL
NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
29 GY VIAS control solenoid valve [Engine is running]
 Selector lever: P or N
0 - 1.0V
[Engine is running]
 Selector lever: D
 Engine speed: Below 5,000 rpm BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
 Engine speed: Above 5,000 rpm 0 - 1.0V
PBIB3249E
PBIB3249E
VIAS SOL VALVE Vacuum
ON Should exist.
OFF Should not exist.
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EC-1192
< SERVICE INFORMATION >[VK45DE]
VARIABLE INDUCTION AIR CONTROL SYSTEM (VIAS)
2. Disconnect VIAS control sol
enoid valve (1) harness connector.
- Vacuum tank (2)
3. Turn ignition switch ON.
4. Check voltage between VIAS control solenoid valve terminal 1 and ground with CONSULT-III or tester.
OK or NG
OK >> GO TO 8.
NG >> GO TO 7.
7.DETECT MALFUNCTIONING PART
Check the following.
 Harness connectors E211, M41
 Harness connectors M82, F102
 IPDM E/R connector E7
 10A fuse
 Harness continuity between IPDM E/R and VIAS control solenoid valve
>> Repair open circuit or short to ground or short to power in harness or connectors.
8.CHECK VIAS CONTROL SOLENOID VALVE OUTP UT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 29 and VIAS control solenoid valve terminal 2. Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 9.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
9.CHECK VIAS CONTROL SOLENOID VALVE
Refer to EC-1193, "
Component Inspection".
OK or NG
OK >> GO TO 10.
NG >> Replace VIAS control solenoid valve.
10.CHECK INTERMITTENT INCIDENT
Refer to EC-717
.
>> INSPECTION END
PBIB3236E
Voltage: Battery voltage
PBIB0173E
Continuity should exist.
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EC-1196
< SERVICE INFORMATION >[VK45DE]
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Fuel PressureINFOID:0000000001327089
Idle Speed and Ignition TimingINFOID:0000000001327090
*: Under the following conditions:
 Air conditioner switch: OFF
 Electric load: OFF (Lights, heater fan & rear window defogger)
 Steering wheel: Kept in straight-ahead position
Calculated Load ValueINFOID:0000000001327091
Mass Air Flow SensorINFOID:0000000001327092
*: Engine is warmed up to normal operating temperature and running under no load.
Intake Air Temperature SensorINFOID:0000000001327093
Engine Coolant Te
mperature SensorINFOID:0000000001327094
Fuel Tank Temperature SensorINFOID:0000000001327095
Fuel pressure at idling kPa (kg/cm2, psi) Approximately 350 (3.57, 51)
Target idle speed No load* (in P or N position) 650
±50 rpm
Air conditioner: ON In P or N position 700 rpm or more
Ignition timing In P or N position 12 ° ± 5 ° BTDC
Condition Calculated load value% (Using CONSULT-III or GST)
At idle 14.0 - 33.0
At 2,500 rpm 12.0 - 25.0
Supply voltageBattery voltage (11 - 14V)
Output voltage at idle 1.0 - 1.3V*
Mass air flow (Using CONSULT-III or GST) 2.0 - 6.0 g·m/sec at idle*
7.0 - 20.0 g·m/sec at 2,500 rpm*
Temperature °C ( °F) Resistance k Ω
25 (77) 1.800 - 2.200
Temperature °C ( °F) Resistance k Ω
20 (68) 2.1 - 2.9
50 (122) 0.68 - 1.00
90 (194) 0.236 - 0.260
Temperature °C ( °F) Resistance k Ω
20 (68) 2.3 - 2.7
50 (122) 0.79 - 0.90
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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-4
< SERVICE INFORMATION >[VQ35DE]
PRECAUTIONS
SERVICE INFORMATION
PRECAUTIONS
Precaution Necessary for Steering W
heel Rotation After Battery Disconnect
INFOID:0000000001524592
NOTE:
• This Procedure is applied only to models with In telligent Key system and NVIS/IVIS (NISSAN/INFINITI
VEHICLE IMMOBILIZER SYSTEM - NATS).
 Remove and install all control units after disconnecting both battery cables with the ignition knob in the ″LOCK ″ position.
 Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NVIS /IVIS, an electrically controlled steering lock
mechanism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery pow er is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4. Perform the necessary repair operation.
5. When the repair work is completed, return the ignition switch to the ″LOCK ″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of all control units using CONSULT-III.
Precaution for Drain Engine Coolant and Engine OilINFOID:0000000001325693
Drain engine coolant and engine oil when the engine is cooled.
Precaution for Disconnecting Fuel PipingINFOID:0000000001325694
 Before starting work, make sure no fire or spark producing items are in the work area.
 Release fuel pressure before disconnecting and disassembly.
 After disconnecting pipes, plug openings to stop fuel leakage.
Precaution for Removal and DisassemblyINFOID:0000000001325695
 When instructed to use SST, use specified tools. Always be careful to work safely, avoid forceful or unin-
structed operations.
 Exercise maximum care to avoid damage to mating or sliding surfaces.
 Cover openings of engine system with a tape or equival ent, if necessary, to seal out foreign materials.
 Mark and arrange disassembly parts in an organi zed way for easy troubleshooting and re-assembly.
 When loosening nuts and bolts, as a basic rule, star t with the one furthest outside, then the one diagonally
opposite, and so on. If the order of loosening is specified, do exactly as specified. Power tools may be used
in the step.
Precaution for Inspection, Repair and ReplacementINFOID:0000000001325696
Before repairing or replacing, thoroughly inspect parts. Inspect new replacement parts in the same way, and
replace if necessary.
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EM-46
< SERVICE INFORMATION >[VQ35DE]
FUEL INJECTOR AND FUEL TUBE
4. Remove fuel feed hose (wit
h damper) from fuel sub-tube.
NOTE:
There is no fuel return route.
CAUTION:
 While hoses are disconnected, plug them to prevent fuel
from draining.
 Do not separate damper and hose.
5. When separating fuel feed hose (with damper) and centralized under-floor piping connection, disconnect
quick connector as the following:
a. Remove quick connector cap from quick connector connection on right member side.
b. Disconnect fuel feed hose (with damper) from bracket hose clamp.
c. Disconnect quick connector from centralized under-floor piping as follows: CAUTION:
Disconnect quick connector by using quick conn ector release [SST: — (J-45488)], not by picking
out retainer tabs.
i. With the sleeve side of quick connector release facing quick connector, install quick connector release
onto centralized under-floor piping.
ii. Insert quick connector release into quick connector until sleeve contacts and goes no further. Hold quick connector release on
that position.
CAUTION:
Inserting quick connector re lease hard will not disconnect
quick connector. Hold qui ck connector release where it
contacts and goes no further.
iii. Draw and pull out quick connector straight from centralized under-floor piping.
CAUTION:
 Pull quick connector holding “A” position as shown in thefigure.
 Do not pull with lateral force applied. O-ring inside quick connector may be damaged.
 Prepare container and cloth beforehand as fuel will leak out.
 Avoid fire and sparks.
 Keep parts away from heat source. Especially, be careful when welding is performed around
them.
 Do not expose parts to battery electrolyte or other acids.
 Do not bend or twist connection between quick connector and fuel feed hose (with damper) dur-
ing installation/removal.
KBIA1293E
PBIC2083E
PBIC1898E
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EM-54
< SERVICE INFORMATION >[VQ35DE]
FRONT TIMING CHAIN CASE
FRONT TIMING CHAIN CASE
Removal and InstallationINFOID:0000000001325728
NOTE:
 This section describes removal/installation procedure
of front timing chain case and timing chain related
parts without removing oil pan (upper) on the vehicle.
 When oil pan (upper) needs to be removed or installed, or when rear timing chain case is removed or installed, remove oil pans (upper and lower) first. Then remove front timing chain case, timing chain related
parts, and rear timing chain case in this order, and install in reverse order of removal. Refer to EM-64, "
Com-
ponent".
 Refer to EM-64, "
Component" for component parts location.
REMOVAL
1. Disconnect negative battery terminal. Refer to SC-4, "How to Handle Battery".
2. Remove engine cover with power tool. Refer to EM-19, "
Component".
3. Remove air cleaner case assembly. Refer to EM-17, "
Component".
4. Remove front and rear engine undercover with power tool.
5. Release the fuel pressure. Refer to EC-87, "
Fuel Pressure Check".
6. Drain engine oil. Refer to LU-7, "
Changing Engine Oil".
CAUTION:
 Perform this step when the engine is cold.
 Do not spill engine oil on drive belts.
7. Drain engine coolant from radiator. Refer to CO-10, "
Changing Engine Coolant".
CAUTION:
 Perform this step when the engine is cold.
 Do not spill engine coolant on drive belts.
8. Separate engine harnesses removing their brackets from front timing chain case.
9. Remove drive belts. Refer to EM-15, "
Removal and Installation".
10. Remove intake manifold colle ctors (upper and lower). Refer to EM-19, "
Component".
11. Remove power steering oil pump from bracket with piping connected, and temporarily secure it aside.
Refer to PS-27, "
On-Vehicle Inspection and Service".
12. Remove power steering oil pump bracket. Refer to PS-27, "
On-Vehicle Inspection and Service".
13. Remove alternator. Refer to SC-19, "
System Description".
14. Remove water bypass hose, water hose clamp and idler pulley bracket from front timing chain case.
15. Remove intake valve timing control covers.  Loosen mounting bolts in reverse order as shown in the figure.
 Use the seal cutter [SST: KV10111100 (J37228)] to cut liquidgasket for removal.
CAUTION:
Shaft is internally jointed wi th camshaft sprocket (INT) cen-
ter hole. When removing, keep it horizontal until it is com-
pletely disconnected.
SEM728G
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TIMING CHAINEM-65
< SERVICE INFORMATION > [VQ35DE]
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Removal and InstallationINFOID:0000000001325730
NOTE:
 This section describes procedures for removing/installing front timing chain case and timing chain related
parts, and rear timing chain case, when oil pan (upper) needs to be removed/installed for engine overhaul,
etc.
 To remove/install front timing chain case, timing chain, and its related parts without removing oil pan (upper),
refer to EM-54, "
Removal and Installation".
REMOVAL
1. Remove front tire.
2. Disconnect negative battery terminal.
3. Remove engine cover with power tool. Refer to EM-19, "
Component".
4. Remove air cleaner case assembly. Refer to EM-17, "
Component".
5. Remove front and rear engine undercover with power tool.
6. Release the fuel pressure. Refer to EC-87, "
Fuel Pressure Check".
7. Drain engine coolant from radiator. Refer to CO-10, "
Changing Engine Coolant".
CAUTION:
 Perform this step when the engine is cold.
 Do not spill engine coolant on drive belts.
8. Drain engine oil. Refer to LU-7, "
Changing Engine Oil".
CAUTION:
 Perform this step when the engine is cold.
 Do not spill engine oil on drive belts.
9. Remove engine harnesses.
10. Remove intake manifold collectors (upper and lower). Refer to EM-19, "
Component".
11. Remove radiator cooling fan assembly. Refer to CO-20, "
Component".
12. Remove drive belts. Refer to EM-15, "
Removal and Installation".
13. Remove A/C compressor from bracket with piping c onnected, and temporarily secure it aside. Refer to
ATC-121, "
Component".
14. Remove power steering oil pump from bracket with piping connected, and temporarily secure it aside.
Refer to PS-27, "
On-Vehicle Inspection and Service".
15. Remove power steering oil pump bracket. Refer to PS-27, "
On-Vehicle Inspection and Service".
16. Remove alternator. Refer to SC-19, "
System Description".
17. Remove water bypass hose, water hose clamp and id ler pulley bracket from front timing chain case.
18. Remove intake valve timing control covers.
10. Camshaft sprocket (INT) 11. Slack guide 12. Crankshaft sprocket
13. Timing chain tensioner (primary) 14. Intake valve timing control cover 15. Collared O-ring
16. O-ring 17. Chain tensioner cover 18. Intake valve timing control cover
19. Water hose clamp 20. Spacer 21. Idler pulley
22. Crankshaft pulley 23. Front oil seal 24. Idler pulley
25. A/C compressor bracket 26. Water pump cover 27. Bracket
28. Front timing chain case 29. Bracket 30. Rear timing chain case
31. O-ring 32. Tension guide 33. Water drain plug (front side)
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