Hyundai Ioniq: Engine Control System / Mass Air Flow Sensor (MAFS). Description and operation
MAFS uses a hot-film type sensing element to measure the mass of intake air entering the engine, and send the signal to ECM.
A large amount of intake air represents acceleration or high load conditions while a small amount of intake air represents deceleration or idle.
The ECM uses this information to control the EGR solenoid valve and correct the fuel amount.

Inspection1.Connect the GDS on the Data Link Connector (DLC).2.Measure the output voltage of the MAPS at idle and IG ON. Specification : Refer to "Specification"Removal 1...
Specifications
Air Flow (kg/h)
Frequency (kHz)
-401.49-201.59-101.68-81.7-61.7201.8161.9381...
Other information:
WARNING
Always wear appropriate shoes when operating your vehicle. Unsuitable
shoes, such as high heels, ski boots, sandals, flip-flops, etc., may interfere
with your ability to use the brake and accelerator pedals.
Do not start the vehicle with the accelerator pedal depressed...
Inspection
•
Wrap the protective tape on the tool to disassemble with the screwdriver or remover. •
Use caution in keeping and handling during disassembling/assembling because it is easily contaminated with lubricant and oil...
Categories
Folding the rear seat
The rear seatbacks can be folded to facilitate carrying long items or to increase
the luggage capacity of the vehicle.
WARNING
Never allow passengers to sit on top of the folded down seatback while
the vehicle is moving. This is not a proper seating position and no seat belts
are available for use. This could result in serious injury or death in case
of an accident or sudden stop.
Objects carried on the folded down seatback should not extend higher
than the top of the front seatbacks. This could allow cargo to slide forward
and cause injury or damage during sudden stops.
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