Kia Niro: Engine Control System / Mass Air Flow Sensor (MAFS) Repair procedures

Inspection

Visually check the MAFS for the following:

–	Correct mounting direction

–	Any contamination, corrosion or damage on connector

–	Clogged or wet air cleaner

–	Deformation or blocked MAFS cylinder by foreign material

2.	Check for any leakage on intake system and intercooler system.

Removal

1.	Switch "OFF" the ignition and disconnect the negative (-) battery terminal.

2.	Disconnect the mass air flow sensor connector (A) and the installation clamp (B).

Remove the mass air flow sensor (C).

Mass air flow sensor mounting bolt :

3.9 - 5.8 N·m (0.4 - 0.6 kgf·m, 2.8 - 4.3 lb·ft)

Mass air flow sensor clamp mounting screw :

2.9 - 4.9 N·m (0.3 - 0.5 kgf·m, 2.2 - 3.6 lb·ft)

Installation

•	Install the component to the specified torque.

•	Note that internal damage may occur when the component is dropped. In this case, use it after inspecting.

•	Be careful not to damage the sensing element and the honey cell.

1.	Install in the reverse order of removal.

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