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

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.

Manifold Absolute Pressure Sensor (MAPS). Repair procedures

Inspection 1. Connect the diagnostic tool on the Data Link Connector (DLC). 2. Measure the output voltage of the MAPS at idle and IG ON...

Intake Air Temperature Sensor (IATS). Specifications

Specification Temperature [°C (°F)] Resistance (kΩ) -40 (-40) 40.93 - 48.35 -20 (-4) 13...

Other information:

Hyundai Santa Fe (TM) 2019-2024 Service Manual: Rear Power Mosfet. Repair procedures

Inspection 1. Turn the ignition switch ON. 2. Manually operate the control switch and measure the voltage of the blower motor. 3. Select the control switch to raise the voltage until it reaches high speed...

Hyundai Santa Fe (TM) 2019-2024 Service Manual: Climate Control Air Filter. Repair procedures

Replacement 1. Remove the glove box. (Refer to Body - "Glove Box") 2. Remove the filter cover (A) by pressing the knob. 3. Replace the air filter (A) with a new one according to the direction of air filter...