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 Service Manual: Repair procedures

Service Adjustment Procedure Steering Wheel Play Inspection 1. Turn the steering wheel so that the front wheels can face straight ahead. 2. Mark the center of the steering wheel...

Hyundai Santa Fe (TM) 2019-2025 Owner's Manual: Immobilizer system

The immobilizer system helps protect your vehicle from theft. If an improperly coded key (or other device) is used, the engine’s fuel system is disabled. When the Engine Start/Stop button is pressed to the ON position, the immobilizer system indicator should come on briefly, then go off...