Kia Stinger CK: Air Conditioning System / Evaporator Temperature Sensor

Kia Stinger (CK) 2018-2023 Service Manual / Heating, Ventilation And Air Conditioning / Air Conditioning System / Evaporator Temperature Sensor

Description and operation
Description

The evaporator temperature sensor detects the evaporator core temperature and interrupts compressor relay power in order to prevent evaporator from freezing by excessive cooling.

Repair procedures
Inspection
1.

Turn the ignition switch OFF.
2.

Disconnect the evaporator temperature sensor connector.
3.

Measure resistance between terminals “+” and “-” of the evaporator temperature sensor.

Specification

Evaporator core temperature
[°C (°F)]
Resistance[kΩ]
Voltage[V]
-10 (14)
 43.35
 2.96
0 (32)
 27.62
 2.4
10 (50)
 18.07
 1.88
20 (68)
 12.11
 1.44
30 (86)
 8.3
 1.08
40 (104)
 5.81
 0.81

4.

Connect the evaporator temperature sensor connector.
5.

Run the engine, turn the A/C switch ON, and then measure the voltage between the terminals of the harness connector.
Replacement
1.

Disconnect the negative (-) battery terminal.
2.

Remove the evaporator core assembly.

(Refer to Air Conditioning System - "Evaporator Core")

3.

Remove the evaporator temperature sensor (A) from evaporator sensor.
4.

Install in the reverse order of removal.

Evaporator Core

Photo Sensor

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