Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSINFINITI2008FX45 AWD V8-4.5L (VK45DE)REPAIR AND DIAGNOSISTECHNICAL SERVICE BULLETINSALL TECHNICAL SERVICE BULLETINSENGINE CONTROLS - AIR FLOW METER SERVICE PROCEDURE
2008 Infiniti FX45 AWD V8-4.5L (VK45DE)
Engine Controls - Air Flow Meter Service Procedure
2008 Infiniti FX45 AWD V8-4.5L (VK45DE)SECTION Engine Controls - Air Flow Meter Service Procedure
Classification: EC05-012A
Reference: ITB05-051A
Date: July 21, 2008
AIR FLOW METER SERVICE
This bulletin has been amended. Applied Vehicles has been updated. Please discard previous copies of this bulletin.
APPLIED VEHICLES:
2003 - 2008 G35 (V35/V36 and CV35)
2004 - 2008 FX45/FX35 (S50)
2006 - 2008 M45/M35 (Y50)
2008 G37 (CV36)
2005 - 2006 Q45 (F50)
2008 EX35 (J50)
IF YOU CONFIRM
The airflow meter needs to be replaced for any reason,
ACTION
1. Remove the top of the air filter box with airflow meter assembly from the vehicle.
2. Remove the airflow meter sensor from the airflow meter housing.
3. Thoroughly clean the air filter box and the airflow meter housing.
4. Install a new airflow meter sensor.
^ Do Not replace the entire airflow meter housing; replace only the sensor listed in the Parts information.
5. Reinstall the top of the air filter box with airflow meter assembly back into the vehicle with a new Genuine Nissan air filter.
IMPORTANT:
The purpose of "ACTION" (above) is to give you a quick idea of the work you will be performing. You MUST closely follow the entire Service Procedure as it contains information that is essential to successfully completing this repair.
PARTS INFORMATION
CLAIM INFORMATION
SERVICE PROCEDURE
1. Remove the top of the air filter box with airflow meter assembly from the vehicle.
^ Refer to section EC in the appropriate Electronic Service Manual (ESM) for vehicle specific removal information.
2. Remove the airflow meter sensor from the airflow meter housing.
^ It's held on with 2 T20 Tamper Resistant Torx(R) screws.
3. Thoroughly clean the air filter box and the airflow meter housing.
^ Wipe out the entire inside area of the airflow meter housing with a clean rag (see Figure 2).
^ Use low-pressure compressed air or a shop vacuum to clean out all dust, dirt, and debris from inside both halves of the air filter box and inside of the airflow meter housing (see Figures 2 and 3).
CAUTION:
Cover the ducting from the throttle body with a clean shop towel or other method so dirt or debris can not enter the engine intake manifold.
4. Install the new airflow meter sensor into the old airflow meter housing (see Figure 1).
^ Do Not replace the entire airflow meter housing; replace only the sensor listed in the Parts information.
^ Tighten the screws to 1.2 - 1.8 N.m (0.12 - 0.18 Kg-m, 11 - 16 in-lb)
5. Reinstall the top of the air filter box with the airflow meter assembly back into the vehicle with a new Genuine Nissan air filter.
IMPORTANT:
^ A new Genuine Nissan air filter element must be used for all warranty claims and any other claim for which Nissan pays.
^ A new Genuine Nissan air filter element is designed to be compatible with the Nissan airflow meter and has proven to provide adequate dust protection.
^ It is strongly recommended that customers continue using genuine Nissan air filters when replacement is required for routine maintenance.
Disclaimer
Reference: ITB05-051A
Date: July 21, 2008
AIR FLOW METER SERVICE
This bulletin has been amended. Applied Vehicles has been updated. Please discard previous copies of this bulletin.
APPLIED VEHICLES:
2003 - 2008 G35 (V35/V36 and CV35)
2004 - 2008 FX45/FX35 (S50)
2006 - 2008 M45/M35 (Y50)
2008 G37 (CV36)
2005 - 2006 Q45 (F50)
2008 EX35 (J50)
IF YOU CONFIRM
The airflow meter needs to be replaced for any reason,
ACTION
1. Remove the top of the air filter box with airflow meter assembly from the vehicle.
2. Remove the airflow meter sensor from the airflow meter housing.
3. Thoroughly clean the air filter box and the airflow meter housing.
4. Install a new airflow meter sensor.
^ Do Not replace the entire airflow meter housing; replace only the sensor listed in the Parts information.
5. Reinstall the top of the air filter box with airflow meter assembly back into the vehicle with a new Genuine Nissan air filter.
IMPORTANT:
The purpose of "ACTION" (above) is to give you a quick idea of the work you will be performing. You MUST closely follow the entire Service Procedure as it contains information that is essential to successfully completing this repair.
PARTS INFORMATION
CLAIM INFORMATION
SERVICE PROCEDURE
1. Remove the top of the air filter box with airflow meter assembly from the vehicle.
^ Refer to section EC in the appropriate Electronic Service Manual (ESM) for vehicle specific removal information.
2. Remove the airflow meter sensor from the airflow meter housing.
^ It's held on with 2 T20 Tamper Resistant Torx(R) screws.
3. Thoroughly clean the air filter box and the airflow meter housing.
^ Wipe out the entire inside area of the airflow meter housing with a clean rag (see Figure 2).
^ Use low-pressure compressed air or a shop vacuum to clean out all dust, dirt, and debris from inside both halves of the air filter box and inside of the airflow meter housing (see Figures 2 and 3).
CAUTION:
Cover the ducting from the throttle body with a clean shop towel or other method so dirt or debris can not enter the engine intake manifold.
4. Install the new airflow meter sensor into the old airflow meter housing (see Figure 1).
^ Do Not replace the entire airflow meter housing; replace only the sensor listed in the Parts information.
^ Tighten the screws to 1.2 - 1.8 N.m (0.12 - 0.18 Kg-m, 11 - 16 in-lb)
5. Reinstall the top of the air filter box with the airflow meter assembly back into the vehicle with a new Genuine Nissan air filter.
IMPORTANT:
^ A new Genuine Nissan air filter element must be used for all warranty claims and any other claim for which Nissan pays.
^ A new Genuine Nissan air filter element is designed to be compatible with the Nissan airflow meter and has proven to provide adequate dust protection.
^ It is strongly recommended that customers continue using genuine Nissan air filters when replacement is required for routine maintenance.
Disclaimer
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.