Nissan Pathfinder (2009 year). Instruction — part 371
AIR CLEANER AND AIR DUCT
EM-25
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AIR CLEANER AND AIR DUCT
Exploded View
INFOID:0000000003939485
Removal and Installation
INFOID:0000000003939486
CAUTION:
Handle mass air flow sensor with care.
• Do not shock it.
• Do not disassemble it.
• Do not touch its sensor.
NOTE:
Add marks as necessary for easier installation.
REMOVAL
1.
Remove the engine room cover using power tool. Refer to
EM-166, "Removal and Installation"
.
2.
Disconnect the harness connector from air cleaner case (upper).
3.
Remove the air duct and resonator assembly and air cleaner case (upper).
4.
Remove air cleaner filter and air cleaner case (lower).
INSPECTION AFTER REMOVAL
Inspect air duct and resonator assembly for cracks or tears.
• If anything found, replace air duct and resonator assembly.
INSTALLATION
Installation is in the reverse order of removal.
1.
Air cleaner case (lower)
2.
Air cleaner filter
3.
Air cleaner case (upper)
4.
Air duct and resonator assembly
Front
AWBIA0133GB
2009 Pathfinder
EM-26
< ON-VEHICLE REPAIR >
[VQ40DE]
INTAKE MANIFOLD COLLECTOR
INTAKE MANIFOLD COLLECTOR
Exploded View
INFOID:0000000003939487
Removal and Installation
INFOID:0000000003939488
REMOVAL
1.
Remove the air dam using power tool.
2.
Remove the engine undercover using power tool.
3.
Remove engine room cover using power tool. Refer to
EM-24, "Removal and Installation"
.
4.
Remove air cleaner case (upper) and air duct assembly. Refer to
EM-25, "Removal and Installation"
.
5.
Remove electronic throttle control actuator as follows:
a.
Drain engine coolant, or when water hoses are disconnected, attach plug to prevent engine coolant leak-
age. Refer to
CO-12, "Changing Engine Coolant"
.
WARNING:
To avoid the danger of being scalded, never drain engine coolant when engine is hot.
CAUTION:
• Perform when engine is cold.
• Do not spill engine coolant on drive belt.
b.
Disconnect water hoses from electronic throttle control actuator.
1.
Vacuum tank
2.
VIAS control solenoid valve
3.
Vacuum hose
4.
Intake manifold collector support
5.
Water hose
6.
Electronic throttle control actuator
7.
Water hose
8.
EVAP hose
9.
Bracket
10. EVAP hose
11.
EVAP canister purge volume control
solenoid valve
12. Gasket
13. Gasket
14. Intake manifold collector
15. Clip
16. PCV hose
17. Connector
18. PCV hose
a.
To intake manifold collector
b.
To power valve
c.
To throttle body
d.
To cylinder head (RH bank)
WBIA0731E
2009 Pathfinder
INTAKE MANIFOLD COLLECTOR
EM-27
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• When engine coolant is not drained from radiator, attach plug to water hoses to prevent engine coolant
leakage.
c.
Disconnect harness connector.
d.
Loosen bolts in reverse order as shown.
CAUTION:
• Handle carefully to avoid any shock to electronic throttle
control actuator.
• Do not disassemble.
6.
Remove the following parts:
• Vacuum hose (to brake booster)
• PCV hose
7.
Loosen bolts in reverse order as shown to remove intake mani-
fold collector support.
8.
Disconnect EVAP hoses and harness connector from EVAP canister purge volume control solenoid valve.
9.
Remove EVAP canister purge volume control solenoid valve.
10. Remove VIAS control solenoid valve and vacuum tank.
• Add mating marks as necessary for easier installation.
11. Loosen nuts and bolts in reverse order as shown with power
tool, and remove intake manifold collector.
CAUTION:
Cover engine openings to avoid entry of foreign materials.
INSTALLATION
Installation is in the reverse order of removal. Note the following:
Intake Manifold Collector
• If stud bolts were removed from intake manifold, install them and tighten to the specified torque.
PBIC2875E
PBIC2876E
PBIC2877E
2009 Pathfinder
EM-28
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INTAKE MANIFOLD COLLECTOR
• Tighten nuts and bolts in numerical order as shown.
Electronic Throttle Control Actuator
• Tighten bolts in numerical order as shown.
• Perform the “Throttle Valve Closed Position Learning” when har-
ness connector of electronic throttle control actuator is discon-
nected. Refer to
EC-25, "Throttle Valve Closed Position Learning"
.
• Perform the “Idle Air Volume Learning” and “Throttle Valve Closed
Position Learning” when electronic throttle control actuator is
replaced. Refer to
EC-25, "Idle Air Volume Learning"
Intake manifold collector
bolts and nuts
: 11.0 N·m (1.1 kg-m, 8 ft-lb)
Stud bolts
: 6.9 N·m (7.0kg-m, 61 in-lb)
PBIC2877E
PBIC2875E
2009 Pathfinder
INTAKE MANIFOLD
EM-29
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INTAKE MANIFOLD
Exploded View
INFOID:0000000003939489
Removal and Installation
INFOID:0000000003939490
REMOVAL
1.
Release fuel pressure. Refer to
.
2.
Remove intake manifold collector. Refer to
EM-26, "Removal and Installation"
3.
Remove fuel tube and fuel injector assembly. Refer to
EM-45, "Removal and Installation"
.
4.
Loosen nuts and bolts with power tool in reverse order as shown
to remove intake manifold.
5.
Remove gaskets.
CAUTION:
Cover engine openings to avoid entry of foreign materials.
INSPECTION AFTER REMOVAL
Surface Distortion
1.
Intake manifold
2.
Gasket
PBIC2878E
PBIC2879E
2009 Pathfinder
EM-30
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INTAKE MANIFOLD
• Check the surface distortion of the intake manifold mating surface
with straightedge and feeler gauge.
• If it exceeds the limit, replace intake manifold.
INSTALLATION
Installation is in the reverse order of removal. Note the following:
Intake Manifold
• If stud bolts were removed from cylinder head, install them and tighten to the specified torque.
• Tighten all nuts and bolts to the specified torque in two or more
steps in numerical order as shown.
Limit
: 0.1 mm (0.004 in)
PBIC0870E
Intake manifold studs
: 11.0 N·m (1.1kg-m, 8 ft-lb)
Intake manifold bolt and nuts
1st step
: 7.4 N·m (0.75 kg-m, 65 in-lb)
2nd step and after
: 29.0 N·m (3.0 kg-m, 21 ft-lb)
PBIC2879E
2009 Pathfinder
EXHAUST MANIFOLD AND THREE WAY CATALYST
EM-31
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EXHAUST MANIFOLD AND THREE WAY CATALYST
Exploded View
INFOID:0000000003939491
Removal and Installation
INFOID:0000000003939492
REMOVAL (LH)
WARNING:
Perform the work when the exhaust and cooling system have cooled sufficiently.
1.
Remove air cleaner case and air duct and resonator assembly. Refer to
2.
Remove the air dam using power tool.
3.
Remove engine undercover using power tool.
4.
Disconnect harness connector and remove LH and RH heated
oxygen sensor 2 using Tool.
CAUTION:
• Be careful not to damage heated oxygen sensor 2.
• Discard any heated oxygen sensor 2 which has been
dropped from a height of more than 0.5 m (19.70 in) onto a
hard surface such as a concrete floor; replace with a new
sensor.
5.
Remove center exhaust tube, main muffler and left front exhaust tube. Refer to
.
6.
Remove exhaust manifold cover (LH).
1.
Exhaust manifold cover (RH)
2.
Exhaust manifold (RH)
3.
Gasket
4.
Exhaust manifold (LH)
5.
Exhaust manifold cover (LH)
PBIC2880E
Tool number
: KV10114400 (J-38365)
LBIA0446E
2009 Pathfinder
EM-32
< ON-VEHICLE REPAIR >
[VQ40DE]
EXHAUST MANIFOLD AND THREE WAY CATALYST
7.
Disconnect harness connector and remove air fuel ratio sensor
1 (LH) using Tool (A).
•
: Front
CAUTION:
• Be careful not to damage air fuel ratio sensor 1.
• Discard any air fuel ratio sensor 1 which has been
dropped from a height of more than 0.5 m (19.7 in) onto a
hard surface such as a concrete floor; replace with a new
sensor.
8.
Remove three way catalyst (LH).
9.
Loosen nuts with power tool in reverse order as shown.
•
: Front
NOTE:
Disregard the numerical order No. 7 and 8 in removal.
10. Remove gaskets.
CAUTION:
Cover engine openings to avoid entry of foreign materials.
INSPECTION AFTER REMOVAL
Surface Distortion
• Check the surface distortion of the exhaust manifold mating sur-
face with straightedge and feeler gauge.
• If it exceeds the limit, replace exhaust manifold.
INSTALLATION (LH)
Installation is in the reverse order of removal.
Exhaust Manifold Gasket
Install the exhaust manifold gasket in direction as shown.
•
: Front
• A: Identification hole
Exhaust Manifold
Tool number
: KV991J0050 (J-44626)
AWBIA0724ZZ
AWBIA0725ZZ
Limit
: 0.3 mm (0.012 in)
PBIC1096E
AWBIA0726ZZ
2009 Pathfinder
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