Engine Controls - Air Flow Meter Service Procedure

Infiniti G35x Sedan AWD V6-3.5L (VQ35DE) Technical Service Bulletin # 05-051A Date: 080721

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)

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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.

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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

Engine Controls - ECM Replacement Procedure

Infiniti G35x Sedan AWD V6-3.5L (VQ35DE) Technical Service Bulletin # 12-018 Date: 120410

Engine Controls - ECM Replacement Procedure

Classification: EC12-009

Reference: ITB12-018

Date: April 10, 2012

ECM REPLACEMENT PROCEDURES WITH CONSULT III PLUS

APPLIED VEHICLES: All 2004 and later

IF YOU CONFIRM:

The Electronic Control Module (ECM) needs to be replaced on a 2004 MY and later vehicle.

ACTIONS:

After installing ECM:

^ Perform ECM Re-communicating Function (if supported).

^ Perform the "ACCELERATOR PEDAL & THROTTLE VALVE CLOSED POSITION LEARNING" procedure (see step 3).

^ Perform the "IDLE AIR VOL LEARNING" procedure (when applicable) using CONSULT-III plus (CIII plus). (See step 4)

^ For 2005 and later vehicles, enter the vehicle VIN into the new ECM (see step 5).

^ Check for any new updates for the new ECM you're installing (see step 6).

CAUTION:

^ Failure to perform all the work steps in the specified order can cause poor engine running, MIL ON, or vehicle emission test rejection.

^ Some vehicles may have Additional Services When Replacing the ECM not covered within this bulletin. Refer to the model specific ESM and

CIII plus "Maintenance" tab for any additional model specific services.

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IMPORTANT:

The purpose of "ACTIONS" (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.

CLAIMS INFORMATION

Service Procedure

SERVICE PROCEDURE

ECM Re-communication Function

1. Re-communicate the ECM with the BCM or Intelligent key.

^ Performing the following procedure can automatically perform a re-communication of a new ECM with a BCM or Intelligent Key unit (not all

models supported) so that the NATS keys do not need to be registered.

^ This Function will only work when the ECM has been replaced with a new one which has never been energized onboard.

^ If this function is not supported all of the keys may need to be individually registered.

a. Install new ECM.

. Use a registered key (*) to turn ignition switch to "ON".

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* To perform this step, use a key that is registered to the original ECM that was replaced.

c. Maintain ignition switch in the "ON" position for at least 5 seconds.

d. Turn ignition switch to "OFF".

e. Start engine.

> If engine can be started continue to step 3.

2. If engine will NOT start, after you perform the ECM Re-Communication Function, all ignition keys will need to be individually registered,

including spare keys with CIII plus and then proceed with step 3.

^ Refer to the Immobilizer tab on the CIII plus home page to register keys.

NOTE:

When registering new Key IDs or replacing the ECM with other than brand new unit, refer to the Immobilizer tab on the CIII plus home page.

^ If multiple keys are attached to the key holder, separate them before work.

^ Distinguish keys with unregistered key ID from those with registered ID.

Accelerator Pedal & Throttle Valve Closed Position Learning

3. Perform the Accelerator Pedal & Throttle Valve Closed Position Learning as follows:

a. Make sure the accelerator pedal is fully released.

b. Turn the ignition switch "ON" for 2 seconds.

c. Turn the ignition switch "OFF" for 10 seconds.

d. Turn the ignition switch "ON" for 2 seconds, then

e. Turn the ignition switch "OFF" again for 10 seconds (see Figure 1).

f. Proceed with step 4 (below).

Perform Idle Air Volume Learning (IAVL)

NOTE:

Make sure all electrical loads are turned OFF, including A/C, defroster, radio, lights, etc. while performing the following procedures. Also, make

sure the engine cooling fans are NOT operating during the following procedures.

4. Perform the Idle Air Volume Learning procedure as follows:

a. Connect CIII plus to the vehicle.

b. Warm up engine and transmission to operating temperature.

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NOTE:

Vehicle may have to be driven to warm transmission enough to allow IAVL to complete.

c. In the CIII plus "Maintenance mode", select "IDLE AIR VOL LEARN" and then "Confirm". See Figure 2.

d. Press "Next" then "Start" on the IDLE AIR VOL LEARN screen. See Figure 3.

^ START cannot be selected until all operating conditions have been met.

The IAVL procedure will take several minutes to complete.

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^ CIII plus will display "EXECUTING" in the "Current status" box while the IAVL EXECUTING procedure is in process. See Figure 4.

^ CIII plus will display "COMPLETE" in the Current status box when the IAVL procedure is finished. See Figure 5.

f. Once the IAVL procedure is finished, COMPLETE proceed with step 5 (below).

For 2005 and Later MY Vehicles ONLY: Enter VIN into New Service Replacement ECM

5. Enter the VIN into the new service replacement ECM as follows:

a. Select "Diagnosis (One System)", "ENGINE", "Work support" and "VIN REGISTRATION". See Figure 6.

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b. Enter the vehicle VIN in both the VIN (1st TIME) and VIN (2nd TIME) boxes, then select Start. See Figure 7.

c. Once completed (COMAND SUCCEED; See Figure 8) turn the ignition off for 10 seconds, then back on and check for any DTCs.

d. Select "READ VIN" and confirm that the VIN is correct.

^ If VIN does not display it can also be checked through the "RE/programming, Configuration" tab.

Check for ECM Updates

6. Check and confirm that ECM is updated to most recent part number and perform reprogram procedure if not most current.

> Select and use the reprogramming option that does not have the message "Caution! Use ONLY with NTBXX-XXX".

^ If you are not familiar with checking for an ECM update or with the reprogramming procedure refer to C-III plus "ECM Reprogramming

general procedure".

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^ If an update is not listed and a blank screen is displayed (see figure 9), a reprogram is not available for the ECM.

Engine Controls - Seized O2 Sensor Removal Procedure

Infiniti G35x Sedan AWD V6-3.5L (VQ35DE) Technical Service Bulletin # 10-008 Date: 100119

Engine Controls - Seized O2 Sensor Removal Procedure

Classification:

409

EM09-016

Reference:

ITB10-008

Date:

January 19, 2010

REMOVAL PROCEDURE FOR SEIZED EXHAUST SENSOR

APPLIED VEHICLES:

All Infiniti vehicles

SERVICE INFORMATION

If an exhaust sensor is seized in the exhaust manifold/catalyst/front tube perform the procedure described in this bulletin to remove the sensor and

prevent unnecessary replacement of the exhaust manifold/catalyst/front tube.

In most cases this procedure is successful. This is because the threads of the exhaust sensors are made of a softer material than the part they thread

into on the exhaust manifold/catalyst/front tube.

NOTE:

The replacement of exhaust manifolds/catalysts/front tubes for stripped exhaust sensor threads may not be considered a warrantable expense.

This procedure can be performed by two methods:

Method # 1. If the Sensor Can Be Easily Accessed

^ The procedure can be performed on the vehicle.

^ The exhaust manifold/catalyst/front tube will not have to be removed.

Method # 2. If the Sensor Cannot Be Easily Accessed

^ The exhaust manifold/catalyst/front tube must be removed from the vehicle.

^ The procedure will be performed with the part clamped in a vice.

Method # 2 is described in this bulletin. Method # 1 is the same as Method # 2 except that it is performed on the vehicle.

SERVICE PROCEDURE

Rust Penetrant

Recommended rust penetrants to be used in this procedure:

NOTES:

^ Rust penetrant is considered a shop supply.

^ Nissan Rust Penetrant can be ordered through the Nissan Direct Ship Chemical Care Product Program: Website order via link on dealer

portal.

^ WD-40 is available from various local sources.

Removal Tool

^ When removing a seized exhaust sensor with a specialty socket (which contains a slit to accommodate the wiring harness) it may spread open

and strip the sensor.

^ Before this occurs it is recommended to cut the wiring harness from the sensor and use a box end wrench or 6-point deep well socket.

1. Clamp the exhaust manifold/catalyst/front tube in a vice.

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2. Spray the sensor with the rust penetrant for 2 to 3 seconds.

^ It is important that the spray is directed at the base of the sensor to ensure it penetrates into the threads.

3. Loosen the sensor approximately 10 degrees.

4. Spray with rust penetrant again for 2 to 3 seconds.

5. Tighten the sensor 10 degrees then loosen the sensor 10 degrees.

^ Repeat this motion several times until the sensor begins to turn more easily.

6. Continue the tightening/loosening motion while gradually unscrewing the sensor. Stop when the sensor will not unscrew any further.

7. Spray with rust penetrant again for 2 to 3 seconds.

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8. Repeat steps 6 and 7 until the sensor is removed.

9. Use compressed air to remove any metal debris from inside the boss threads.

CAUTION:

DO NOT perform this step if the procedure is being done on the vehicle (Method # 1). Doing so may cause metal debris to enter the engine

cylinders.

10. If metal debris remains trapped in the boss threads use a spiral nylon brush to remove it.

11. Spray the boss threads with rust penetrant for 2 to 3 seconds.

12. Run a thread chaser through the boss to clean the threads.

^Use Kent Moore part number J-43897-18 or J43897-12.

13. Use compressed air to remove any remaining debris.

CAUTION:

DO NOT perform this step if the procedure is being done on the vehicle (Method # 1). Doing so may cause metal debris to enter the engine

cylinders.

14. If metal debris remains trapped in the boss threads use a spiral nylon brush to remove it.

15. Tilt the manifold/catalyst/front tube so that the metal debris falls out of the part.

16. Apply compressed air through the boss to blow out any remaining debris.

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CAUTION:

DO NOT perform this step if the procedure is being done on the vehicle (Method # 1 ). Doing so may cause metal debris to enter the

engine cylinders.

17. Install the new sensor as described in the applicable Electronic Service Manual (ESM).