Hyundai Genesis: Air Conditioning System / Ambient Temperature Sensor Description and Operation
The ambient temperature sensor is located inside the side
mirror 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 operating.
The compressor will operate manually.
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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 ...
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:
Fail-Safe Mode
ItemFail-SafeETC MotorThrottle valve stuck at 7°TPSTPS 1 faultECM looks at TPS2TPS 2 faultECM looks at TPS1TPS 1,2 faultThrottle valve stuck at 7°APSAPS 1 faultECM looks at APS 2APS 2 faultECM looks at APS 1APS 1,2 faultEngine idle state
When throttle v ...
If the vehicle detected by the sensors
approaches your vehicle, the warning
chime will sound, the warning
light on the outside rearview mirror
will blink and a message will appear
on the LCD display.
✽ NOTICE
If the detected vehicle is out of the
sensing range of your vehicle, ...