Hyundai Ioniq (AE): Engine Control System / Intake Air Temperature Sensor (IATS). Description and operation

Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual / Engine Control/Fuel System / Engine Control System / Intake Air Temperature Sensor (IATS). Description and operation

Description
Intake 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. So the ECM uses not only MAPS signal but also IATS signal. This sensor has a Negative Temperature Coefficient (NTC) Thermister and it's resistance changes in reverse proportion to the temperature.

    Inspection1.Check the MAFS visually.– Mounting direction correct. – Any contamination, corrosion or damage on connector.

    Specification Temperature Resistance (kΩ) °C °F -40-4040.

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    Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual: A/C Pressure Transducer. Description and operation

    DescriptionThe A/C Pressure Transducer (APT) converts the pressure value of high pressure line into voltage value after measuring it. By converted voltage value, engine ECU controls the cooling fan by operating it high speed or low speed. Engine ECU stops the operation of the compressor when the temperature of refrigerant line is very high or very

    Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual: A/C Pressure Transducer. Repair procedures

    Inspection    â€¢ Before measuring the pressure of the refriferant line, check whether the refrigerant amount is charged in accordance with the specified charging amount.(Refer to Heating, Ventilation, Air Conditioning - "Specifications")1.

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