Heating, Ventilation, and Air Conditioning

Evaporator Temperature Sensor Repair Procedures

7steps
~42min
2/5difficulty
Done 0 of 7

Inspection

  1. Ignition switch OFF
  2. Disconnect the evaporator temperature sensor.
  3. Using a multimeter, measure the resistance between terminals "1" and "2" of the evaporator temperature sensor.
    Specification
    Evaporator core
    temperature [°C(°F)]
    Resistance [kΩ]
    -10 / (14) 43,35
    0 / (32) 27,62
    10 / (50) 18.07
    20 / (68) 12.11
    30 / (86) 8.3
    40 / (104) 5,81

Replacement

  1. Disconnect the negative (-) battery terminal.
  2. Loosen the fastening screw and remove the lower cover of the emergency panel (A).
  3. Remove the evaporator temperature sensor (A) by turning it 90° counterclockwise and pulling it out.
  4. Installation is the reverse of removal.

Test yourself

A quick Kia Optima Hybrid Owner's Manual quiz: every answer comes with an explanation and a link to the manual page.