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: Troubleshooting

    Troubleshooting Examples of False-Alarm Occurrence from system characteristics (It’s not a problem) – Characteristics of EM Wave : EM Waves are reflected against all material and especially metal very well. Reflections of EM Waves are varies with the shape of object.

    Kia Cadenza YG 2016-2021 Service Manual: Components and Components Location

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