Hyundai Palisade: Air conditioning System / Evaporator Temperature Sensor

Hyundai Palisade (LX2) 2020-2025 Service Manual / Heating,Ventilation And Air Conditioning / Air conditioning System / 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.

Hyundai Palisade. Description and operation

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.

Hyundai Palisade. Repair procedures

Specification

Evaporator core temperature [°C (°F)]	Resistance [KΩ]	Voltage [V]
-10 (14)	17.93	3.21
0 (32)	11.36	2.66
10 (50)	7.4	2.13
20 (68)	4.94	1.66
30 (86)	3.37	1.26
40 (104)	2.35	0.95

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.	Loosen the mounting screws and remove the evaporator core cover (A).

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

4.	Install in the reverse order of removal.

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