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) 2019-2025 Owner's Manual: Downhill Brake Control (DBC) indicator light. AUTO STOP indicator light

Downhill Brake Control (DBC) indicator light This indicator light illuminates: When you set the ignition switch or the Engine Start/Stop button to the ON position. - The downhill brake control indicator light illuminates for about 3 seconds and then goes off...

Hyundai Santa Fe (TM) 2019-2025 Service Manual: Head Lamps. Repair procedures

Removal    Head lamps become very hot during use; do not touch them or any attaching hardware immediately after they have been turned off.    The headlamp bulb should not be removed from the headlamp assembly until just before a new bulb is installed...