engine INFINITI FX35 2008 Service Manual

BRC-42
< SERVICE INFORMATION >[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYSTEM
DTC C1123 FR RH OUT ABS SOL
INFOID:0000000001569707
Refer to BRC-40, "DTC C1120 FR LH IN ABS SOL".
DTC C1124 RR LH IN ABS SOLINFOID:0000000001569708
Refer to BRC-40, "DTC C1120 FR LH IN ABS SOL".
DTC C1125 RR LH OUT ABS SOLINFOID:0000000001569709
Refer to BRC-40, "DTC C1120 FR LH IN ABS SOL".
DTC C1126 RR RH IN ABS SOLINFOID:0000000001569710
Refer to BRC-40, "DTC C1120 FR LH IN ABS SOL".
DTC C1127 RR RH OUT ABS SOLINFOID:0000000001569711
Refer to BRC-40, "DTC C1120 FR LH IN ABS SOL".
DTC C1130 ENGINE SIGNAL 1INFOID:0000000001327678
INSPECTION PROCEDURE
1.CHECK SELF-DIAGNOSTIC RESULTS
Check the self-diagnostic results.
Is the above displayed in the self-diagnosis display items?
YES >> GO TO 2.
NO >> INSPECTION END
2.CHECK ENGINE SYSTEM
1. Perform an ECM self-diagnosis and repair or repl ace malfunctioning items. Perform ECM self-diagnosis
again.
2. Perform ABS actuator and electric unit (control unit) self-diagnosis again.
OK or NG
OK >> INSPECTION END
NG >> Repair or replace malfunctioning it ems. Perform the self-diagnosis again.
DTC C1131 ENGINE SIGNAL 2INFOID:0000000001569712
Refer to BRC-42, "DTC C1130 ENGINE SIGNAL 1".
DTC C1132 ENGINE SIGNAL 3INFOID:0000000001569713
Refer to BRC-42, "DTC C1130 ENGINE SIGNAL 1".
DTC C1133 ENGINE SIGNAL 4INFOID:0000000001569714
Refer to BRC-42, "DTC C1130 ENGINE SIGNAL 1".
DTC C1136 ENGINE SIGNAL 6INFOID:0000000001569715
Refer to BRC-42, "DTC C1130 ENGINE SIGNAL 1".
Self-diagnostic results
ENGINE SIGNAL 1
ENGINE SIGNAL 2
ENGINE SIGNAL 3
ENGINE SIGNAL 4
ENGINE SIGNAL 6
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BRC-50
< SERVICE INFORMATION >[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYMPTOMS
The ABS Function Does Not Operate
INFOID:0000000001327695
CAUTION:
The ABS does not operate when the sp eed is 10 km/h (6 MPH) or less.
1.CHECK ABS WARNING LAMP DISPLAY
Make sure warning lamp turns off approximately 2 seconds after the ignition switch is turned ON or when driv-
ing.
OK or NG
OK >> CHECK WHEEL SENSOR. Refer to BRC-49, "Excessive ABS Function Operation Frequency".
NG >> Perform self-diagnosis. Refer to BRC-26, "
Self-Diagnosis".
Pedal Vibration or ABS Operation Sound OccursINFOID:0000000001327696
CAUTION:
Under the following conditions, when brake pedal is lightly depressed (just place a foot on it), ABS is
activated and vibration is felt. However, this is normal.
 When shifting gears
 When driving on slippery road
 During cornering at high speed
 When passing over bumps or grooves
 When pulling away just after st arting engine [at approximately 10 km/h (6 MPH) or higher]
1.SYMPTOM CHECK 1
Check if pedal vibration or operati on sound occurs when engine is started.
OK or NG
OK >> Perform self-diagnosis. Refer to BRC-26, "Self-Diagnosis".
NG >> GO TO 2.
2.SYMPTOM CHECK 2
Check symptom when electrical component (headlamps, etc.) switches are operated.
Does the symptom occur when the electrical component (head lamp, etc.) switches are operated?
YES >> Check if there is a radio, antenna, antenna lead wi re, or wiring close to ABS actuator and electric
unit (control unit) (or its wiring), and if there is, move it farther away.
NO >> CHECK WHEEL SENSOR. Refer to BRC-49, "
Excessive ABS Function Operation Frequency".
Vehicle Jerks During VDC/TCS/ABS ControlINFOID:0000000001327697
1.CHECK ENGINE SPEED SIGNAL
Perform CONSULT-III “DATA MONITOR” to check engine speed.
Is engine speed at idle 400 rpm or higher?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK ABS WARNING LAMP DISPLAY
Make sure warning lamp turns off approximately 2 seconds after the ignition switch is turned ON or when driv-
ing.
OK or NG
OK >> System is normal.
NG >> GO TO 3.
3.CHECK ECM SELF-DIAGNOSTIC RESULTS
Perform ECM self-diagnosis.
Are self-diagnosis items displayed?
YES >> Check the corresponding items. Refer to EC-89(VQ35DE), EC-666(VK45DE) in “Engine Control
(EC section)”.
NO >> GO TO 4.
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CO-1
ENGINE
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CONTENTS
ENGINE COOLING SYSTEM
VQ35DE
SERVICE INFORMATION .. ..........................
3
PRECAUTIONS .............................................. .....3
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
3
Precaution for Liquid Gasket .....................................3
PREPARATION ...................................................5
Special Service Tool ........................................... ......5
Commercial Service Tool ..........................................5
OVERHEATING CAUSE ANALYSIS ..................7
Troubleshooting Chart ......................................... ......7
COOLING SYSTEM ....................................... .....9
Cooling Circuit ..................................................... ......9
System Chart ............................................................9
ENGINE COOLANT ...........................................10
Inspection ............................................................ ....10
Changing Engine Coolant .......................................10
RADIATOR .........................................................13
Component .......................................................... ....13
Removal and Installation .........................................13
Checking Radiator Cap ...........................................14
Checking Radiator ...................................................15
RADIATOR (ALUMINUM TYPE) ........................16
Component .......................................................... ....16
Disassembly and Assembly ....................................16
COOLING FAN ...................................................20
Component .......................................................... ....20
Removal and Installation .........................................20
Disassembly and Assembly ....................................20
WATER PUMP ...................................................22
Component .......................................................... ....22
Removal and Installation .........................................22
WATER INLET AND THERMOSTAT ASSEM-
BLY ....................................................................
27
Component .......................................................... ....27
Removal and Installation .........................................27
WATER OUTLET AND WATER PIPING ..........29
Component ..............................................................29
Removal and Installation .........................................29
SERVICE DATA AND SPECIFICATIONS
(SDS) .................................................................
31
Standard and Limit ..................................................31
VK45DE
SERVICE INFORMATION .. .........................
32
PRECAUTIONS .................................................32
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ....
32
PREPARATION .................................................33
Special Service Tool ................................................33
Commercial Service Tool ........................................33
OVERHEATING CAUSE ANALYSIS ................34
Troubleshooting Chart .............................................34
COOLING SYSTEM ..........................................36
Cooling Circuit .........................................................36
System Chart ...........................................................36
ENGINE COOLANT ..........................................37
Inspection ................................................................37
Changing Engine Coolant ........................................37
RADIATOR ....................................... .................40
Component .......................................................... ....40
Removal and Installation .........................................40
Checking Radiator Cap ...........................................42
Checking Radiator ...................................................43
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CO-4
< SERVICE INFORMATION >[VQ35DE]
PRECAUTIONS
3. Attach liquid gasket tube to the tube presser (commercial ser-
vice tool).
Use Genuine RTV Silicone Seal ant or equivalent. Refer to
GI-44, "
Recommended Chemical Product and Sealant".
4. Apply liquid gasket without breaks to the specified location with the specified dimensions.
 If there is a groove for the liquid gasket application, apply liq-
uid gasket to the groove.
 As for the bolt holes, normally apply liquid gasket inside the holes. Occasionally, it should be applied outside the holes.
Make sure to read the text of service manual.
 Within five minutes of liquid gasket application, install the mat-
ing component.
 If liquid gasket protrudes, wipe it off immediately.
 Do not retighten after mounting bolts and nuts the installation.
 After 30 minutes or more have passed from the installation, fill engine oil and engine coolant.
CAUTION:
If there are specific instructions in this manual, observe them.
EMA0622D
SEM159F
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OVERHEATING CAUSE ANALYSISCO-7
< SERVICE INFORMATION > [VQ35DE]
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OVERHEATING CAUSE ANALYSIS
Troubleshooting ChartINFOID:0000000001325842
Symptom Check items
Cooling sys-
tem parts
malfunction Poor heat transfer
Water pump malfunction Worn or loose drive belt
—
Thermostat stuck closed —
Damaged fins
Dust contamination or pa-
per clogging
Physical damage
Clogged radiator cooling
tube Excess foreign material
(rust, dirt, sand, etc.)
Reduced air flow Cooling fan does not oper-
ate
Fan assembly —
High resistance to fan rota-
tion
Damaged fan blades
Damaged radiator shroud — — —
Improper engine coolant
mixture ratio ———
Poor engine coolant quality — Engine coolant density —
Insufficient engine coolant Engine coolant leaks Cooling hose
Loose clamp
Cracked hose
Water pump Poor sealing
Radiator cap Loose
Poor sealing
Radiator O-ring for damage, deterio-
ration or improper fitting
Cracked radiator tank
Cracked radiator core
Reservoir tank Cracked reservoir tank
Overflowing reservoir tank Exhaust gas leaks into cool-
ing systemCylinder head deterioration
Cylinder head gasket deteri-
oration
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CO-8
< SERVICE INFORMATION >[VQ35DE]
OVERHEATING CAUSE ANALYSIS
Except cool-
ing system
parts mal-
function— Overload on engine
Abusive driving
High engine rpm under no
load
Driving in low gear for ex-
tended time
Driving at extremely high
speed
Powertrain sy stem malfunc-
tion
—
Installed improper size
wheels and tires
Dragging brakes
Improper ignition timing
Blocked or restricted air
flow Blocked bumper —
—
Blocked radiator grille
Installed car brassiere
Mud contamination or paper
clogging
Blocked radiator —
Blocked condenser Blocked air flow
Installed large fog lamp
Symptom Check items
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CO-10
< SERVICE INFORMATION >[VQ35DE]
ENGINE COOLANT
ENGINE COOLANT
InspectionINFOID:0000000001325845
LEVEL CHECK
 Check if the reservoir tank engine coolant level is within the “MIN”
to “MAX” when the engine is cool.
 Adjust the engine coolant level as necessary.
LEAK CHECK
 To check for leaks, apply pressure to the cooling system with the
radiator cap tester (commercial service tool) (A) and radiator cap
tester adapter (commercial service tool) (B).
WARNING:
Do not remove radiator cap when engine is hot. Serious burns
could occur from high-pressure engine coolant escaping from
radiator.
CAUTION:
Higher test pressure than speci fied may cause radiator damage.
NOTE:
In a case that engine coolant decreases, replenish radiator with engine coolant.
 If anything is found, repair or replace damaged parts.
Changing Engine CoolantINFOID:0000000001325846
WARNING:
 To avoid being scalded, do not change en gine coolant when the engine is hot.
 Wrap a thick cloth around radiator cap and carefully remove radiator cap. First, turn radiator cap a
quarter of a turn to release built-up pressu re. Then turn radiator cap all the way.
DRAINING ENGINE COOLANT
1. Remove front engine undercover with power tool.
2. Open radiator drain plug at the bottom of radiator, and then
remove radiator cap.
When draining all of engine cool ant in the system, open water drai n plugs on cylinder block. Refer
to EM-123, "
Disassembly and Assembly".
SMA412B
Testing pressure
: 157 kPa (1.6 kg/cm
2, 23 psi)
PBIC5121J
SBIA0444E
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ENGINE COOLANTCO-11
< SERVICE INFORMATION > [VQ35DE]
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3. Remove reservoir tank as necessary, and drain engine coolant and clean reservoir tank before installing.
4. Check drained engine coolant for contaminants such as rust, corrosion or discoloration.
If contaminated, flush the engine cooling sys tem. Refer to "FLUSHING COOLING SYSTEM".
REFILLING ENGINE COOLANT
1. Install reservoir tank if removed, and radiator drain plug.
CAUTION:
Be sure to clean drain plug and install with new O-ring.
If water drain plugs on cylinder block are removed, close and tighten them. Refer to EM-123, "
Dis-
assembly and Assembly".
2. Make sure that each hose clamp has been firmly tightened.
3. Remove air relief plug on heater hose.
4. Fill radiator, and reservoir tank if removed, to specified level. Pour engine coolant through engine coolant filler neck
slowly of less than 2 (2-1/8 US qt, 1-3/4 lmp qt) a minute
to allow air in system to escape.
 Use Genuine NISSAN Long Li fe Antifreeze/Coolant or
equivalent mixed with water (dis tilled or demineralized).
Refer to MA-9, "
Fluids and Lubricants".
 When engine coolant overflows air relief hole on heater hose, install air relief plug with new O-ring.
5. Install radiator cap.
6. Warm up until opening thermostat. Standard for warm ing-up time is approximately 10 minutes at 3,000
rpm.
 Make sure thermostat opening condition by touching r adiator hose (lower) to see a flow of warm water.
CAUTION:
Watch water temperature gauge so as not to overheat engine.
7. Stop the engine and cool down to less than approximately 50 °C (122 °F).
Radiator drain plug:
: 1.18 N·m (0.12 kg-m, 10 in-lb)
SBIA0445E
Engine coolant capacity
(With reservoir tank at “MAX” level): Approximately 8.6 (9-1/8 US qt, 7-5/8 lmp qt)
SMA182B
Reservoir tank engine coolant capacity
(At “MAX” level): 0.8 (7/8 US qt, 3/4 lmp qt)
Air relief plug: : 1.19 N·m (0.12 kg-m, 11 in-lb)
SMA412B
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CO-12
< SERVICE INFORMATION >[VQ35DE]
ENGINE COOLANT
 Cool down using fan to reduce the time.
 If necessary, refill radiator up to filler neck with engine coolant.
8. Refill reservoir tank to “MAX” level line with engine coolant.
9. Repeat steps 4 through 7 two or more times with radiator cap installed until engine coolant level no longer drops.
10. Check cooling system for leaks with engine running.
11. Warm up the engine, and check for sound of engine coolant flow while running engine from idle up to 3,000 rpm with heater temperature controller set at several position between “COOL” and “WARM”.
 Sound may be noticeable at heater unit.
12. Repeat step 11 three times.
13. If sound is heard, bleed air from cooling system by repeating step 4 through 7 until engine coolant level no
longer drops.
FLUSHING COOLING SYSTEM
1. Install reservoir tank if removed, and radiator drain plug.
If water drain plugs on cylinder block are removed, close and tighten them. Refer to EM-123, "
Dis-
assembly and Assembly".
2. Remove air relief plug on heater hose.
3. Fill radiator with water until water spills from the ai r relief hole, then close air relief plug. Fill radiator and
reservoir tank with water and reinstall radiator cap.
4. Run the engine and warm it up to normal operating temperature.
5. Rev the engine two or three times under no-load.
6. Stop the engine and wait until it cools down.
7. Drain water from the system. Refer to "DRAINING ENGINE COOLANT".
8. Repeat steps 1 through 7 until clear water begins to drain from radiator. Radiator drain plug:
: 1.18 N·m (0.12 kg-m, 10 in-lb)
SBIA0445E
Air relief plug: : 1.19 N·m (0.12 kg-m, 11 in-lb)
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RADIATORCO-13
< SERVICE INFORMATION > [VQ35DE]
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RADIATOR
ComponentINFOID:0000000001325847
 Refer to
GI-8, "Component" for symbols in the figure.
Removal and InstallationINFOID:0000000001325848
REMOVAL
WARNING:
Do not remove radiator cap when en gine is hot. Serious burns could occur from high-pressure engine
coolant escaping from radiator. Wrap a thick cloth aroun d the cap. Slowly turn it a quarter of a turn to
release built-up pressure. Carefully remove ra diator cap by turning it all the way.
1. Remove front engine undercover with power tool.
2. 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.
3. Remove air duct (inlet) and air cleaner case assembly. Refer to EM-17, "
Component".
1. Reservoir tank cap 2. Reservoir tank 3. Reservoir tank hose
4. Clamp (reservoir tank hose) 5. Clamp (radiator hose) 6. Radiator hose (upper)
7. Radiator upper mount bracket 8. Mounting rubber (upper) 9. Radiator cap
10. Radiator 11. Mounting rubber (lower) 12. O-ring
13. Drain plug 14. Radiator hose (lower) 15. Clamp (A/T fluid cooler hose)
16. A/T fluid cooler hose 17. Radiator cooling fan assembly 18. Reservoir tank bracket
A. To water outlet B. To A/T fluid cooler tube C. To water inlet
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