Hyundai Ioniq: Engine Control System / Mass Air Flow Sensor (MAFS). Description and operation

Hyundai Ioniq (AE) 2017-2025 Service Manual / Engine Control/Fuel System / Engine Control System / Mass Air Flow Sensor (MAFS). Description and operation

Description

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.

Repair procedures

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...

Mass Air Flow Sensor (MAFS). Specifications

Specifications Air Flow (kg/h) Frequency (kHz) -401.49-201.59-101.68-81.7-61.7201.8161.9381...

Other information:

Hyundai Ioniq (AE) 2017-2025 Service Manual: Troubleshooting

Signal WaveformThis example shows a typical Crankshaft Position Sensor (CKPS) and Camshaft Position Sensor (CMPS) waveform at idle. The PCM controls the injection and ignition timing by using these signals. Generally CKPS signal is used to detect the piston's position and CMPS signal is used to detect the Top Dead Center of each cylinder...

Hyundai Ioniq (AE) 2017-2025 Service Manual: Repair procedures

Removal • Be sure to read and follow the "General Safety Information and Caution" before doing any work related with the high voltage system. Failure to follow the safety instructions may result in serious electrical injuries...

Categories

Rear Seats

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.