Hyundai Ioniq (AE): Engine Control System / Mass Air Flow Sensor (MAFS). Repair procedures

Inspection
1.
Check the MAFS visually.
–
Mounting direction correct.
–
Any contamination, corrosion or damage on connector.
–
Air cleaner's clogging or wet.
–
MAFS cylinder's deforming or blocking by any foreign material.
2.
Check any leakage on intake system and intercooler system.
Removal
1.
Turn the ignition switch OFF and disconnect the battery (-) cable.
2.
Disconnect the mass air flow sensor connector (A) and the installation clamp (B).
3.
Remove the mass air flow sensor (C).

Installation
   
•
Install the component with the specified torques.
•
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.
Mass air flow sensor installation bolt :
2.9 - 4.9 N.m (0.3 - 0.5 kgf.m, 2.2 - 3.6 lb-ft)
Mass air flow sensor clamp installation bolt :
2.9 - 4.9 N.m (0.3 - 0.5 kgf.m, 2.2 - 3.6 lb-ft)

    Circuit Diagram

    DescriptionIntake Air Temperature Sensor (IATS) is included inside Manifold Absolute Pressure Sensor and detects the intake air temperature.To calculate precise air quantity, correction of the air temperature is needed because air density varies according to the temperature.

    Other information:

    Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual: General safety information and caution

    Safety PrecautionPrecautions To Take Before Servicing High Voltage System    â€¢ Since hybrid vehicles contain a high voltage battery, if the high voltage system or vehicles are handled incorrectly, this might lead to a serious accidents like electric shock and electric leakage.

    Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual: Parking Distance Warning (PDW) ON/OFF Switch. Repair procedures

    Removal    â€¢ Put on gloves to prevent hand injuries.    â€¢ When removing with a flat-tip screwdriver or remover, wrap protective tape around the tools to prevent damage to components.

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