Page 65 of 4179
![NISSAN X-TRAIL 2003 Service Repair Manual DRIVE BELTS
EM-13
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DRIVE BELTSPFP:02117
Checking Drive BeltsEBS00KN7
WARNING:
Be sure to perform this step when the engine is stopped.
Make sure that the indicator (si NISSAN X-TRAIL 2003 Service Repair Manual DRIVE BELTS
EM-13
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DRIVE BELTSPFP:02117
Checking Drive BeltsEBS00KN7
WARNING:
Be sure to perform this step when the engine is stopped.
Make sure that the indicator (si](/manual-img/5/57404/w960_57404-64.png)
DRIVE BELTS
EM-13
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DRIVE BELTSPFP:02117
Checking Drive BeltsEBS00KN7
WARNING:
Be sure to perform this step when the engine is stopped.
Make sure that the indicator (single line notch on fixed side) of drive belt auto-tensioner is within the pos-
sible use range (between three line notches on moving side).
NOTE:
Check the drive belt auto-tensioner indicator (single line notch on fixed side) when engine is cold.
When new drive belt is installed, the indicator (single line notch on fixed side) should be within the
range “A” in the figure.
Visually check entire belt for wear, damage or cracks.
If the indicator (single line notch on fixed side) is out of the possible use range or belt is damaged, replace
drive belt.
Tension AdjustmentEBS00KN8
Belt tensioning is not necessary, as it is automatically adjusted by drive belt auto-tensioner.
Removal and InstallationEBS00KN9
REMOVAL
1. Remove splash guard on RH undercover.
2. With box wrench, and while securely holding the hexagonal part
in center of drive belt auto-tensioner pulley, move the wrench
handle in the direction of arrow (loosening direction of ten-
sioner).
CAUTION:
Avoid placing hand in a location where pinching may occur
if the holding tool accidentally comes off.
3. Insert a rod approximately 6 mm (0.24 in) in diameter such as
short-length screwdriver into the hole of the retaining boss to fix
drive belt auto-tensioner pulley.
4. Loosen drive belt from water pump pulley in sequence, and
remove it.
PBIC1234E
PBIC2169E
Page 66 of 4179
![NISSAN X-TRAIL 2003 Service Repair Manual EM-14
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DRIVE BELTS
INSTALLATION
1. With box wrench, and while securely holding the hexagonal part in center of drive belt auto-tensioner pul-
ley, move the wrench handle in the direction of arro NISSAN X-TRAIL 2003 Service Repair Manual EM-14
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DRIVE BELTS
INSTALLATION
1. With box wrench, and while securely holding the hexagonal part in center of drive belt auto-tensioner pul-
ley, move the wrench handle in the direction of arro](/manual-img/5/57404/w960_57404-65.png)
EM-14
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DRIVE BELTS
INSTALLATION
1. With box wrench, and while securely holding the hexagonal part in center of drive belt auto-tensioner pul-
ley, move the wrench handle in the direction of arrow (loosening direction of tensioner).
CAUTION:
Avoid placing hand in a location where pinching may occur if the holding tool accidentally comes
off.
2. Insert a rod approximately 6 mm (0.24 in) in diameter such as short-length screwdriver into the hole of
retaining boss to fix drive belt auto-tensioner pulley.
3. Hook drive belt onto all pulleys except for water pump, and then onto water pump pulley finally.
CAUTION:
Confirm belt is completely set to pulleys.
4. Release drive belt auto-tensioner, and apply tension to drive belt.
5. Turn crankshaft pulley clockwise several times to equalize tension between each pulley.
6. Confirm tension of drive belt at indicator is within the range of possible use. Refer to EM-13, "
Checking
Drive Belts" .
Removal and Installation of Drive Belt Auto-TensionerEBS00KNA
REMOVAL
1. Remove splash guard on RH undercover.
2. Remove drive belt. Refer to EM-13, "
Removal and Installation" .
3. Remove drive belt auto-tensioner.
INSTALLATION
Install in the reverse order of removal.
CAUTION:
When installing drive belt auto-tensioner, be careful not to damage water pump pulley.
1. Drive belt auto-tensioner 2. Water pump pulley
PBIC2170E
Page 67 of 4179
AIR CLEANER AND AIR DUCT
EM-15
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AIR CLEANER AND AIR DUCTPFP:16500
Removal and InstallationEBS00KNB
REMOVAL
1. Remove mass air flow sensor harness clamp.
2. Disconnect harness connector from mass air flow sensor.
3. Remove air duct (inlet), air ducts and air cleaner case/mass air flow sensor assembly disconnecting their
joints.
Add marks as necessary for easier installation.
4. Remove mass air flow sensor from air cleaner case upper.
CAUTION:
Handle mass air flow sensor with following cares.
Do not shock it.
Do not disassemble it.
Do not touch its sensor.
5. Remove resonator in fender lifting left fender protector.
1. Air cleaner filter 2. Clip 3. Air cleaner case upper
4. Clamp 5. Air duct 6. PCV hose
7. Clamp 8. Bracket 9. Mass air flow sensor
10. O-ring 11. Air duct 12. Air duct (inlet)
13. Clip 14. Collar 15. Grommet
16. Resonator 17. Bracket (A/T models) 18. Mounting rubber
19. Collar 20. Grommet 21. Air cleaner case lower
PBIC2171E
Page 68 of 4179
EM-16
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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.
Changing Air Cleaner FilterEBS0123Q
REMOVAL
1. Unfasten clips and lift up air cleaner case upper.
2. Remove air cleaner filter.
INSTALLATION
Install in the reverse order of removal.
Page 69 of 4179
INTAKE MANIFOLD
EM-17
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INTAKE MANIFOLDPFP:14003
Removal and Installation (QR20DE)EBS00KNC
REMOVAL
1. Release fuel pressure. Refer to EC-48, "FUEL PRESSURE RELEASE" (WITH EURO-OBD) or EC-510,
"FUEL PRESSURE RELEASE" (WITHOUT EURO-OBD).
2. Remove air cleaner case upper, mass air flow sensor and air duct assembly. Refer to EM-15, "
AIR
CLEANER AND AIR DUCT" .
3. Remove quick connector caps, and disconnect quick connectors
at engine side and vehicle side. Refer to EM-32, "
Removal and
Installation (QR20DE)" .
4. Remove electric throttle control actuator with the following procedure:
a. Disconnect harness connector.
1. Vacuum hose 2. Intake manifold 3. PCV hose
4. Bracket 5. Gasket 6. Electric throttle control actuator
7. Gasket 8. Intake manifold support 9. Gasket
10. Vacuum hose 11.EVAP canister purge volume con-
trol solenoid valve12. Vacuum hose
13. Bracket 14. Bracket
PBIC2172E
PBIC2175E
Page 70 of 4179
![NISSAN X-TRAIL 2003 Service Repair Manual EM-18
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INTAKE MANIFOLD
b. Loosen mounting bolts in reverse order as shown in the figure,
and remove electric throttle control actuator and gasket.
CAUTION:
Handle carefully to avoid any shock NISSAN X-TRAIL 2003 Service Repair Manual EM-18
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INTAKE MANIFOLD
b. Loosen mounting bolts in reverse order as shown in the figure,
and remove electric throttle control actuator and gasket.
CAUTION:
Handle carefully to avoid any shock](/manual-img/5/57404/w960_57404-69.png)
EM-18
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INTAKE MANIFOLD
b. Loosen mounting bolts in reverse order as shown in the figure,
and remove electric throttle control actuator and gasket.
CAUTION:
Handle carefully to avoid any shock to electric throttle
control actuator.
Do not disassemble.
5. Disconnect harness, power steering piping, vacuum hose and PCV hose from intake manifold, and move
them aside.
6. Remove intake manifold support and gasket.
7. Disconnect sub-harness from fuel injector. Refer to EM-32, "
Removal and Installation (QR20DE)" .
8. Loosen mounting bolts and nuts in reverse order as shown in
the figure, and remove intake manifold (with fuel tube and fuel
injector assembly) and gasket.
CAUTION:
Do not disassemble intake manifold.
Cover engine openings to avoid entry of foreign materi-
als.
NOTE:
Disregard No. 6 when loosening.
9. Remove fuel tube and fuel injector assembly from intake manifold. Refer to EM-32, "
Removal and Installa-
tion (QR20DE)" .
INSTALLATION
Note the following, and install in the reverse order of removal.
Intake Manifold
If stud bolts were removed, install them and tighten to the specified torque below.
Check if gasket is not dropped from the installation groove of intake manifold.
Tighten in numerical order as shown in the figure.
NOTE:
No. 6 means double tightening of bolt No. 1.
EMJ1612D
PBIC2173E
: 10.8 N·m (1.1 kg-m, 8 ft-lb)
PBIC2173E
Page 71 of 4179
![NISSAN X-TRAIL 2003 Service Repair Manual INTAKE MANIFOLD
EM-19
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Electric Throttle Control Actuator
Tighten mounting bolts equally and diagonally in several steps
and in numerical order as shown in the figure. NISSAN X-TRAIL 2003 Service Repair Manual INTAKE MANIFOLD
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Electric Throttle Control Actuator
Tighten mounting bolts equally and diagonally in several steps
and in numerical order as shown in the figure.](/manual-img/5/57404/w960_57404-70.png)
INTAKE MANIFOLD
EM-19
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Electric Throttle Control Actuator
Tighten mounting bolts equally and diagonally in several steps
and in numerical order as shown in the figure.
Perform the “Throttle Valve Closed Position Learning” when har-
ness connector of electric throttle control actuator is discon-
nected. Refer to EC-46, "
Throttle Valve Closed Position
Learning" (WITH EURO-OBD) or EC-508, "Throttle Valve
Closed Position Learning" (WITHOUT EURO-OBD).
Perform the “Idle Air Volume Learning” and “Throttle Valve
Closed Position Learning” when electric throttle control actuator
is replaced. Refer to EC-46, "
Idle Air Volume Learning" (WITH
EURO-OBD) or EC-508, "
Idle Air Volume Learning" (WITHOUT
EURO-OBD).
INSPECTION AFTER INSTALLATION
Make sure there are no fuel leaks at connections with the following procedure:
1. Apply fuel pressure to fuel lines with turning ignition switch “ON” (with engine stopped). Then make sure
there are no fuel leaks at connections.
NOTE:
Use mirrors for checking on invisible points.
2. Start engine. With engine speed increased, make sure again there are no fuel leaks at connections.
CAUTION:
Do not touch engine immediately after stopped as engine becomes extremely hot.
EMJ1612D
Page 72 of 4179
EM-20
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INTAKE MANIFOLD
Removal and Installation (QR25DE)EBS011TH
REMOVAL
1. Release fuel pressure. Refer to EC-48, "FUEL PRESSURE RELEASE" (WITH EURO-OBD) or EC-510,
"FUEL PRESSURE RELEASE" (WITHOUT EURO-OBD).
2. Remove air cleaner case upper, mass air flow sensor and air duct assembly. Refer to EM-15, "
AIR
CLEANER AND AIR DUCT" .
3. Remove quick connector caps, and disconnect quick connectors
at engine side and vehicle side. Refer to EM-37, "
Removal and
Installation (QR25DE)" .
4. Remove electric throttle control actuator with the following procedure:
1. Bracket 2. PCV hose 3. Intake manifold collector
4. Gasket 5. Electric throttle control actuator 6. Intake manifold rear support
7.EVAP canister purge volume control
solenoid valve8. Vacuum hose 9. Intake manifold
10. Vacuum reservoir tank 11. VIAS control solenoid valve 12. Vacuum hose
13. Bracket 14. Intake manifold support 15. Vacuum reservoir tank bracket
PBIC2174E
PBIC2175E