Kia Cadenza YG: Air Conditioning System / Ambient Sensor Description and Operation

Description
1.
The ambient temperature sensor is located at the front of the condenser and detects ambient air temperature. It is a negative type thermistor resistance will increase with lower temperature, and decrease with higher temperatures.
2.
The sensor output will be used for discharge temperature control, temperature regulation door control, blower motor level control, mix mode control and in-car humidity control.
   
If the ambient temperature is below 0°C (32.0°F), the A/C compressor will be stopped.
The compressor will be operated by manual operating.

    Inspection 1. Ignition "ON" 2. Using the scan tool. 3. Emit intensive light toward photo sensor using a lamp, and check the output voltage change.

    Inspection 1. Ignition "OFF" 2. Disconnect ambient temperature sensor. 3. Check the resistance of ambient temperature sensor between terminals 1 and 2 whether it is changed by changing of the ambient temperature.

    Other information:

    Kia Cadenza YG 2016-2021 Service Manual: Compressor Oil Repair procedures

    Oil Specification 1. The HFC-134a system requires synthetic (PAG) compressor oil whereas the R-12 system requires mineral compressor oil. The two oils must never be mixed. 2. Compressor (PAG) oil varies according to compressor model. Be sure to use oil specified for the model of compressor.

    Kia Cadenza YG 2016-2021 Service Manual: Receiver-Drier Repair procedures

    Replacement 1. Remove the condenser, and then remove the bottom cap (B) with L wrench (A) from the condenser. Tightening torque : 9.8~14.7N.m (1.0~1.5kgf.m, 7.2~10.8 lb-ft) 2. Remove the desiccant (A) from condenser using a long nose plier.

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