Hyundai Santa Fe (TM): Air conditioning System / Auto Defogging Sensor. Description and operation

Hyundai Santa Fe (TM) 2019-2023 Service and Repair Manual / Heating,Ventilation And Air Conditioning / Air conditioning System / Auto Defogging Sensor. 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. The air conditioner control module receives signal from the sensor and restrains moisture and eliminate defog by controlling the intake actuator, A/C, auto defogging actuator, blower motor rpm, and mode actuator.

    Inspection 1. Check the resistance of the ambient temperature sensor between terminals 1 and 2 whether it changes by changing the ambient temperature.

    Inspection To inspect and diagnose the sensor, refer to Self-Diagnosis procedure and DTC guide. Replacement 1.

    Other information:

    Hyundai Santa Fe (TM) 2019-2023 Service and Repair Manual: Temperature Control Actuator. Repair procedures

    Inspection 1. Turn the ignition switch OFF. 2. Disconnect the temperature control actuator connector. 3. Verify that the temperature control actuator operates to the cool position when connecting 12V to terminal 3 and grounding terminal 7.

    Hyundai Santa Fe (TM) 2019-2023 Service and Repair Manual: Heater & A/C Control Unit (Rear). Repair procedures

    Replacement    • When removing with a flat-tip screwdriver or remover, wrap protective tape around the tools to prevent damage to components.

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