Hyundai Tucson Owners & Service Manuals

Hyundai Tucson: Air Conditioning System / Evaporator Temperature Sensor

- 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.

- Inspection

1.Turn the ignition switch ON.

2.Turn the A/C swicth ON.

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

Temperature[°C(°F)]Resistance (kΩ)Voltage (V)
-10(14)17.933.21
0(32)11.362.66
10(50)7.42.13
20(68)4.941.66
30(86)3.371.26
40(104)2.350.95

- 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.

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