Ford 1L2Z-12B579-ARM
Mass Air Flow Sensor

The service process of the Mass Air Flow (MAF) sensor starts with disconnecting the battery ground cable then proceeding to remove the air cleaner assembly followed by opening the air cleaner clamp to separate the inlet side from the outlet side. Interfering with MAF sensing elements within the airflow meter may trigger a failure of the unit. The MAF sensor along with its body needs unit calibration so remove the assembly while disconnecting its electrical connector. The MAF sensor should be detached from the MAF sensor plate by removing all the nuts. The installation requires reversing the removal steps while verifying that the grommet near the engine air cleaner housing seats properly to block unmetered air from entering the engine. After correct positioning of the inlet and outlet sides you must use the alignment notch feature on the engine air cleaner then point the electrical connector towards the top of the unit when reconnecting it.

Service and repair of the Air Flow Meter/Sensor requires beginning with removal of the air cleaner outlet tube. Service of the Air Flow Meter/Sensor begins with removing the Mass Air Flow sensor electrical connector followed by four MAF sensor mounting nuts. Follow the opposite steps from removal to install the parts.

A service procedure for the Mass Air Flow (MAF) sensor starts with disconnecting the battery cable and moving forward with air cleaner assembly removal. The air cleaner can open for clamp release followed by parting the inlet from the outlet. Expanding airflow meter elements by any means should be avoided because such actions can cause the unit to fail completely. The MAF sensor together with its body requires both calibration and servicing as a single unit. Remove the MAF assembly before disconnecting the MAF sensor electrical connector and unfastening the MAF sensor from the MAF sensor plate. During installation conduct the reversal of removal steps while making sure the grommet at the engine air cleaner housing extension harness fully seals to block engine air intake from unmetered sources. The proper alignment of the inlet and outlet engine air cleaner sides can be achieved by using the alignment notch. Avoid trapping wires behind the MAF sensor while reinstallation by pointing the electrical connector upward.

Service of the Mass Air Flow (MAF) sensor requires you to disconnect the battery ground cable first. You should not alter the sensing elements in the air flow bypass section of the MAF body since the MAF sensor electronics module and body function as an integrated unit during servicing. Service the components according to the given order. Install the components in the reverse order of removal steps.

Service of the Mass Air Flow (MAF) Sensor starts with battery cable grounding. Start by opening the air cleaner assembly while you unfasten its clamp followed by splitting the inlet section from the outlet section. Operating on MAF sensing elements in the airflow meter will result in unit failure when performing maintenance. You should remove the MAF assembly while disconnecting its electrical connector because the MAF sensor needs calibration together with body service. The MAF sensor needs the removal of its nuts before you can disconnect it from the MAF sensor plate. The installation process should include reversing all removal steps with special attention to seating the grommet properly at the engine air cleaner housing to block unmetered air entry. Before reinstalling the engine air cleaner, verify correct position of its inlet and outlet sides by using the alignment notch; avoid trapping wires behind the MAF sensor and position the electrical connector up throughout the process.

The first step to serve the Mass Air Flow sensor involves loosening the air cleaner outlet tube clamp followed by setting the tube to the side. The electrical connector should be removed from the MAF sensor during the service process. Service of the MAF sensor requires that you install the electronics module and body as one unit without adjusting the sensing elements found in the MAF air flow bypass. The MAF sensor can be installed by reversing the bolt-removal steps used for the current sensor.

The first step for servicing the Mass Air Flow (MAF) sensor requires the MAF sensor electrical connector removal. You should first loosen the tube clamp on the air cleaner outlet while moving it to a side position. You need to remove the four MAF sensor bolts before extracting it from its position. The MAF sensor electronics module functions as an entire unit with its body because any changes to the sensing elements in the air flow bypass area are strictly prohibited. The installation of this sensor requires following the steps in reverse order to reattach everything.

A service operation of the Air Flow Meter begins with removing the battery's ground connection. The service of the Air Flow Meter/Sensor begins by disconnecting the electrical connector then removing the four nuts for the sensor followed by the air cleaner outlet tube removal. The Mass Air Flow (MAF) functions as a calibrated unit so its hot wire element and housing must be handled as a single serviceable assembly. Any attempt to clean the hot wire should never occur individually because installation separately will modify the airflow calibration. The installation process should follow the steps of removing the MAF sensor.

The service of Air Flow Meter/Sensor requires disconnecting the battery ground cable and the MAF sensor electrical connector. The procedure begins with loosening the clamp on the air cleaner outlet tube. This action should be followed by removing the four bolts securing the MAF sensor before retrieving the sensor. A unit calibration exists between the MAF sensor electronics module and body making you need to service them together so avoid any contact with sensing elements located in the MAF body air flow bypass. You should undo the steps of removal to install the device.

Service of the mass air flow (MAF) sensor requires disconnecting the battery ground cable followed by disconnecting the MAF sensor electrical connector. The MAF sensor requires removal of its two securing screws before extraction. The new sensor installation requires screw tightening to 10 Nm (89 lb-in) followed by backward execution of the removal phase for complete installation.

Reverse the removal procedure to complete the installation.

Use the alignment notch to properly align the inlet and outlet sides of the engine air cleaner.

Disconnect the MAF sensor electrical connector.

Remove the four nuts securing the MAF sensor.

Remove the four nuts securing the MAF sensor.

Disconnect the electrical connector from the MAF sensor.

Remove the four bolts securing the MAF sensor.

Remove the four bolts securing the MAF sensor and take it out.

Disconnect the battery ground cable.

Disconnect the battery ground cable.

Remove the four nuts securing the MAF sensor.

Next, remove the air cleaner and duct assembly.

Reverse the removal procedure, ensuring that the grommet sealing the engine air cleaner housing at the extension harness is fully seated.

Reverse the removal procedure.

They are calibrated and installed as a unit.

Disconnect the battery ground cable.

Four nuts.

The MAF sensor module and body are calibrated and serviced as a unit.