Infiniti FX35 / FX45. Manual - part 625

AIR CLEANER AND AIR DUCT

EM-17

< SERVICE INFORMATION >

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AIR CLEANER AND AIR DUCT

Component

INFOID:0000000001325707

Removal and Installation

INFOID:0000000001325708

REMOVAL

1.

Remove engine cover with power tool. Refer to 

EM-19, "Component"

.

• This work is unnecessary when parts located forward of mass air flow sensor are removed/installed.

2.

Remove air duct (inlet) and power duct.

3.

Disconnect mass air flow sensor harness connector.

4.

Disconnect PCV hose.

5.

Remove air cleaner case/mass air flow sensor and air duct disconnecting their joints.
• Add marks as necessary for easier installation.

6.

Remove mass air flow sensor from air cleaner case.

CAUTION:

Handle mass air flow sensor with the following cares.
• Do not shock it.
• Do not disassemble it.
• Do not touch its sensor.

7.

Remove resonator in fender, lifting left fender protector.

INSPECTION AFTER REMOVAL

Inspect air hoses for cracks or tear.
• If anything found replace air hose.

1.

Air hose

2.

PCV hose

3.

Air duct

4.

Air hose

5.

Power duct

6.

Clip

7.

Air duct (inlet)

8.

Resonator

9.

Grommet

10. Air cleaner case

11.

Air cleaner filter

12. Air cleaner case

13. O-ring

14. Mass air flow sensor

SBIA0462E

EM-18

< SERVICE INFORMATION >

[VQ35DE]

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.
• To position air cleaner case, refer to 

EM-18, "Changing Air Cleaner Filter"

.

Changing Air Cleaner Filter

INFOID:0000000001325709

INSPECTION

Check status (fouling, damage, etc.) of air cleaner filter at power duct
hole.

REMOVAL

Removal in the order below.

1.

Remove air duct (inlet) from air cleaner case.

2.

Disconnect harness connector from mass air flow sensor.

3.

Loosen clamp bolts of air hose.

4.

Remove mounting bolts for air cleaner case. Remove air cleaner
case/mass air flow sensor/air hose assembly.

5.

Unhook clips and open air cleaner case, and remove air cleaner
filter.

INSTALLATION

Note the following, and install in the reverse order of removal.
• If grommet at bottom of air cleaner case comes off together with air

cleaner case, fix it to vehicle before installation.

• Look at internal bottom face through power duct hole, and position

air cleaner case with resonator upper end circle and air cleaner
case round hole aligned. Then push air cleaner case straight
down.

• At this time, check by hand if protrusion at bottom of air cleaner

case has been inserted into grommet on vehicle side.

• Clip power duct with bulge on reverse side of lower end engaged

with air cleaner case.

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INTAKE MANIFOLD COLLECTOR

EM-19

< SERVICE INFORMATION >

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INTAKE MANIFOLD COLLECTOR

Component

INFOID:0000000001325710

Removal and Installation

INFOID:0000000001325711

REMOVAL

WARNING:

• To avoid the danger of being scalded, never drain engine coolant when the engine is hot.
• Gasket for intake manifold collector (upper) is secured together with mounting bolt for intake mani-

fold collector (lower). Thus, even when only gasket for upper side is replaced, gasket for lower side
must be also replaced.

1.

Electric throttle control actuator

2.

Gasket

3.

Vacuum hose

4.

EVAP canister purge volume control 
solenoid valve

5.

Bracket

6.

Intake manifold collector (upper)

7.

Intake manifold collector cover

8.

Gasket

9.

Water hose

10. Bracket

11.

Water hose

12. PCV hose

13. Intake manifold collector (lower)

SBIA0585E

EM-20

< SERVICE INFORMATION >

[VQ35DE]

INTAKE MANIFOLD COLLECTOR

1.

Remove engine cover with power tool.

2.

Disconnect water hoses from intake manifold collector (upper), attach blind plug to prevent engine coolant
leakage.

CAUTION:

• Perform this step when the engine is cold.
• Do not spill engine coolant on drive belts.

3.

Remove air cleaner case and air duct. Refer to 

EM-17, "Component"

.

4.

Remove electric throttle control actuator as the following:

a.

Disconnect harness connector.

b.

Loosen mounting bolts in reverse order as shown in the figure.

CAUTION:

• Handle carefully to avoid any shock to electric throttle

control actuator.

• Do not disassemble.

5.

Remove fuel sub-tube mounting bolt to disconnect from rear of intake manifold collector (lower). Refer to

EM-45, "Component"

.

6.

Disconnect vacuum hose and water hose from intake manifold collector (upper).

7.

Remove EVAP canister purge volume control solenoid valve bracket mounting bolt from intake manifold
collector (upper).

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