Kia Optima DL3: Air Conditioning System / In-car Sensor

Description and operation

Description

The In-car air temperature sensor is built in the heater & A/C control unit.

The sensor contains a thermistor which measures the temperature of the inside. The signal decided by the resistance value which changes in accordance with perceived inside temperature, is delivered to heater control unit and according to this signal the control unit regulates in-car temperature to intended value.

    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.

    Description and operation Description The photo sensor is located at the center of the defrost nozzles. The photo sensor contains a photovoltaic (sensitive to sunlight) diode.

    Other information:

    Kia Optima DL3 2019-2026 Service and Repair Manual: Power Mosfet

    Description and operation Description It is installed to the DATC and adjusts the fan rpm by precisely controlling the voltage applied to the blower motor. Repair procedures Inspection 1. Turn the ignition switch ON.

    Kia Optima DL3 2019-2026 Service and Repair Manual: Heater & A/C Control Unit (DATC)

    Components and components location Components Connector Pin NO Funtion Pin NO Funtion 1 Ground 9 Ground 2 ILL- 10 - 3 - 11

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