Hyundai Elantra (CN7): Engine Control System / Ambient Temperature Sensor (ATS)
Description and operation
Ambient Temperature Sensor (ATS) is installed on the front-end module and senses the ambient temperature.
This sensor is exposed to the ambient air temperature in front of the radiator.
The ATS is a Negative Temperature Coefficient (NTC)-type sensor and its resistance is in inverse proportion to the temperature.
Specifications
Temperature [°C (°F)]
|
Resistance (kΩ)
|
-40 (-40)
| 841.2 - 1019.3
|
-20 (-4)
| 263.8 - 306.5
|
0 (32)
| 92.4 - 102.8
|
10 (50)
| 57.0 - 62.2
|
20 (68)
| 36.2 - 38.8
|
40 (104)
| 15.3 - 16.7
|
50 (122)
| 10.3 - 11.4
|
60 (140)
| 7.1 - 8.0
|
80 (176)
| 3.5 - 4.0
|
Repair procedures
| 1. | Turn the ignition switch OFF. |
| 2. | Disconnect the ATS connector. |
| 3. | Measure resistance between the ATS terminals 1 and 2. |
| 4. | Check that the resistance is within the specification.
Temperature [°C (°F)]
| Resistance (kΩ)
| -40 (-40)
| 841.2 - 1019.3
| -20 (-4)
| 263.8 - 306.5
| 0 (32)
| 92.4 - 102.8
| 10 (50)
| 57.0 - 62.2
| 20 (68)
| 36.2 - 38.8
| 40 (104)
| 15.3 - 16.7
| 50 (122)
| 10.3 - 11.4
| 60 (140)
| 7.1 - 8.0
| 80 (176)
| 3.5 - 4.0
|
|
| 1. | Turn the ignition switch OFF and disconnect the battery negative (-) cable. |
| 2. | Remove the front bumper assembly. (Refer to Body (Interior nad Exterior- "Front Bumper Assembly") |
| 3. | Disconnect the connector (A), and then remove the ambient temperature sensor (B). 
|
| •
| Note that internal damage may occur when the component is dropped. In this case, use it after inspecting. |
|
| 1. | Install in the reverse order of removal. |
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