Nissan Xterra. Manual - part 349

EM-24

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AIR CLEANER AND AIR DUCT

REMOVAL AND INSTALLATION

AIR CLEANER AND AIR DUCT

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INFOID:0000000009484450

Removal and Installation

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NOTE:

Add marks as necessary for easier installation.

REMOVAL

1. Remove engine room cover (if equipped).
2. Disconnect the harness connector from mass air flow sensor.
3. Disconnect crankcase ventilation hose.
4. Remove the air duct and resonator assembly and air cleaner case (upper).
5. Remove air cleaner filter and air cleaner case (lower).
6. If necessary remove the mass air flow sensor from the air cleaner case (upper)

CAUTION:

Handle mass air flow sensor with care.

• Do not shock it.

• Do not disassemble it.

• Do not touch its sensor.

INSPECTION AFTER REMOVAL

Inspect air duct and resonator assembly for cracks or tears.

• Replace air duct and resonator assembly as necessary.

INSTALLATION

Installation is in the reverse order of removal.

1.

Air cleaner case (lower)

2.

Air cleaner filter

3.

Air cleaner case (upper)

4.

Mass air flow

5.

Air duct and resonator

Front

AWBIA1521ZZ

INTAKE MANIFOLD COLLECTOR

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INTAKE MANIFOLD COLLECTOR

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Removal and Installation

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NOTE:

When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spill-

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REMOVAL

1. Remove air duct and resonator assembly. Refer to 

EM-24, "Removal and Installation"

.

2. Remove electric throttle control actuator as follows:
a. Partially drain engine coolant. Refer to 

CO-11, "Changing Engine Coolant"

.

WARNING:

To avoid the danger of being scalded, do not 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 electric throttle control actuator.
c. Disconnect harness connector.

1.

Vacuum tank

2.

VIAS control solenoid valve

3.

Vacuum hose

4.

Intake manifold collector support

5.

Water hose

6.

Electric 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

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INTAKE MANIFOLD COLLECTOR

d. Loosen bolts in reverse order as shown.

CAUTION:

• Handle carefully to avoid any shock to electric throttle

control actuator.

• Do not disassemble.

3. Remove the following parts:

• Vacuum hose (to brake booster)

• PCV hose

4. Loosen the intake manifold collector support bolts in reverse

order as shown to remove the intake manifold collector support.

5. Disconnect EVAP hoses and harness connector from EVAP canister purge volume control solenoid valve.
6. Remove EVAP canister purge volume control solenoid valve.
7. Remove VIAS control solenoid valve and vacuum tank.

• Add mating marks as necessary for easier installation. 

8. 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

Intake manifold collector 
stud bolts

: 6.9 N·m (0.7 kg-m, 61 in-lb)

INTAKE MANIFOLD COLLECTOR

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• Tighten nuts and bolts in numerical order as shown.

Intake Manifold Collector Support

Tighten the intake manifold collector support bolts to specification in

the order as shown to install the intake manifold collector support.

Electric Throttle Control Actuator

• Tighten bolts in numerical order as shown.

• Perform the “Throttle Valve Closed Position Learning” when har-

ness connector of electric throttle control actuator is disconnected.

Refer to 

EC-125, "Throttle Valve Closed Position Learning"

.

• Perform the “Idle Air Volume Learning” and “Throttle Valve Closed

Position Learning” when electric throttle control actuator is

replaced. Refer to 

EC-125, "Idle Air Volume Learning"

.

PBIC2877E

PBIC2876E

PBIC2875E