Hyundai Elantra Owners and Service Manuals

Hyundai Elantra: Engine Control System / Ambient Temperature Sensor (ATS)

Hyundai Elantra (CN7) 2021-2025 Service Manual / Engine Control / Fuel System / Engine Control System / Ambient Temperature Sensor (ATS)

Description and operation
Description
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
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

Repair procedures
Inspection
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

Removal
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).

Installation
   
•
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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