Kia Forte BD Quiz
Heating, Ventilation, and Air Conditioning

Evaporator Temperature Sensor

In this manual: Heating, Ventilation, and Air Conditioning
General Information — 8Maintenance — 32Engine Mechanical System — 47Engine Electrical System — 17Emission Control System — 10Engine Control System/Fuel System — 32Clutch System — 11Manual Transmission — 11DCT (Dual Clutch Transmission) System — 16Drive Shaft and Axle — 8Suspension System — 26Steering — 9Restraints — 11Brake System — 27Body (Interior and Exterior) — 119Body Electrical System — 98Heating, Ventilation, and Air Conditioning — 27
7steps
~42min
2/5difficulty
Done 0 of 7

Description and Operation

Description

The evaporator temperature sensor detects the evaporator core temperature and cuts off power to the compressor relay to prevent the evaporator from freezing due to excessive cooling. The evaporator temperature sensor is a Negative Temperature Coefficient (NTC) type. The electrical resistance of the NTC increases as the temperature decreases and decreases as the temperature increases.

Repair Procedures

Inspection

  1. Turn the ignition off.

  2. Disconnect the evaporator temperature sensor connector.

  3. Measure the resistance between the "+" and "-" terminals 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) 8.30 1,08
    40 (104) 5,81 0,81

    1. Sensor Ground 2. Evaporator Sensor (+)

Replacement

  1. Disconnect the negative (-) battery terminal.

  2. Remove the evaporator core.

    (See Air Conditioning - Evaporator Core)

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

  4. To install, reverse the removal procedure.

Test yourself

A quick Kia Forte BD quiz: every answer comes with an explanation and a link to the manual page.