Hyundai Elantra: Air Conditioning System / Ambient Temperature Sensor
Description and operation
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.
Repair procedures
1. | Check the resistance of the ambient temperature sensor between terminals 1 and 2 whether it changes by changing the ambient temperature. Sensor resistance
Ambient temperature [°C (°F)]
| Resistance between terminal 1 and 2 (kΩ)
| -30 (-22)
| 480.41
| -20 (-4)
| 271.21
| -10 (14)
| 158.18
| 0 (32)
| 95.096
| 10 (50)
| 58.799
| 20 (68)
| 37.315
| 30 (86)
| 24.26
| 40 (104)
| 16.13
| 50 (122)
| 10.95
|

1. Ambient Sensor (+) 2. Sensor ground
|
|
1. | Disconnect the negative (-) battery terminal. |
2. | Remove the front bumper. (Refer to Body - "Front Bumper Assembly") |
3. | Disconnect the connector (A) and then remove the ambient temperature sensor (B). 
|
4. | To install, reverse the removal procedure. |
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Other information:
Component Replacement after Deployment
•
Before doing any SRS repairs, use the diagnostic tool to check for DTCs. refer to the diagnostic Trouble Code list for repairing of the related DTCs.When the front airbag(s) deployed after a collision, replace the following items...
With the door handle
Front door
If the inner door handle is pulled when
the door is locked, the door will unlock
and open.
Rear door
If the inner door handle is pulled once
when the door is locked, the door will
unlock. If the inner door handle is pulled
once more, the door will open...