Hyundai Sonata: 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.

   
If the ambient temperature is below 1.0°C (33.8°F), the A/C compressor will stop.
The compressor will operate manually.
Photo Sensor Repair procedures
Inspection 1. Turn the ignition switch ON. 2. Connect the GDS. 3. Emit intensive light toward the photo sensor using a lamp, and check the output voltage change. 4. The voltage will ri ...

Ambient Temperature Sensor Repair procedures
Inspection 1. Check the resistance of the ambient temperature sensor between terminals 1 and 2 whether it changes by changing the ambient temperature. 1. Ambient Sensor (+)2. Sensor ground ...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Rear Door Window Glass Repair procedures
Replacement 1. Pull down rear door window glass by pressing the power window glass switch. 2. Remove the rear door trim. (Refer to Rear Door - "Rear Door Trim") 3. Remove the rear door belt outside weatherstrip (A). 4. After loosening the mounting screws, then remove the rear door ...

Hyundai Sonata LF 2014-2019 Service Manual: Front Disc Brake Repair procedures
Removal 1. Raise the vehicle, and make sure it is securely supported. 2. Remove the wheel cap(A).     Be careful not to damage to the wheel cap (A) when removing the it. 3. Remove the front wheel and tire (A) from front hub. Tightening torque: 88.2 ~ 107.8 N.m (9 ...

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