Hyundai Palisade (LX2): Air conditioning System / Ambient Temperature Sensor

Description and operation

Description
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 temperature.
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.
Hyundai Palisade. Description and operation   
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If the ambient temperature is below 1.0°C (33.8°F), the A/C compressor will stop.
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The compressor will operate manually.

    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.

    Description and operation Description The auto defogging sensor is installed on the front window glass. The sensor judges and sends signal if moisture occurs to blow out wind for defogging.

    Other information:

    Hyundai Palisade (LX2) 2020-2026 Service Manual: Repair procedures

    Diagnosis with Diagnostic tool 1. In the body electrical system, failure can be quickly diagnosed by using the vehicle diagnostic system (Diagnostic tool). The diagnostic system (Diagnostic tool) provides the following information.

    Hyundai Palisade (LX2) 2020-2026 Service Manual: Repair procedures

    Refrigerant System Service Basics (R-134a) Refrigerant Recovery Use only service equipment that is U.L-listed and is certified to meet the requirements of SAE J2210 to remove HFC-134a(R-134a) from the air conditioning system.

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