Hyundai Santa Fe: Air conditioning System / Evaporator Temperature Sensor. Repair procedures

Hyundai Santa Fe (TM) 2019-2025 Service Manual / Heating,Ventilation And Air Conditioning / Air conditioning System / Evaporator Temperature Sensor. Repair procedures

Inspection

1.	Turn the ignition switch OFF.

2.	Disconnect the evaporator temperature sensor connector.

Measure resistance between terminal "+" and "-" of the evaporator temperature sensor.

Specification

Temperature[°C(°F)]	Min. Resistance[kΩ]	Resistance[kΩ]	Max. Resistance[kΩ]
-2 (28.4)	28.84	30.16	30.48
0 (32)	27.35	27.62	29.89
2 (35.6)	25.05	25.32	25.59
4 (39.2)	22.97	23.24	23.51
6 (42.8)	21.08	21.35	21.61

4.	Connect the evaporator temperature sensor connector.

5.	Run the engine and turn the A/C switch ON, then measure the voltage between the terminals of the harness connector.

Replacement

1.	Disconnect the negative (-) battery terminal.

2.	Remove the evaporator core. (Refer to Heater - "Evaporator Core")

3.	Separate the evaporator temperature sensor (A) from the evaporator core.

4.	Install in the reverse order of removal.

Evaporator Temperature Sensor. Description and operation

Description The evaporator temperature sensor will detect the evaporator core temperature and interrupt compressor relay power in order to prevent evaporator from freezing by excessive cooling...

In-car Sensor. Description and operation

Description The In-car air temperature sensor is built in the heater & A/C control unit. The sensor consists of a thermistor that measures the inside temperature...

Other information:

Hyundai Santa Fe (TM) 2019-2025 Owner's Manual: Automatic climate control system

To defog inside windshield 1. Select the desired fan speed. 2. Select the desired temperature. 3. Press the defroster button (). 4. The air-conditioning will turn on according to the detected ambient temperature, outside (fresh) air position and higher fan speed will be selected automatically...

Hyundai Santa Fe (TM) 2019-2025 Service Manual: Heated Oxygen Sensor (HO2S). Description and operation

Description Heated Oxygen Sensor (HO2S) consists of zirconium and alumina and is installed both upstream and downstream of the Manifold Catalytic Converter. It varies in accordance with the air/fuel ratio. The sensor must be hot in order to operate normally...