Hyundai Elantra: 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. |
Description and operation
DescriptionThe GDI injector is similar to a standard injector, but sprays fuel at a much higher pressure directly into the combustion chamber and has a swirl disc to get the fuel swirling as it exits the nozzle...
Description and operation
DescriptionPurge Control Solenoid Valve (PCSV) is a solenoid valve and is installed on the surge tank and controls the passage between the canister and the intake manifold...
Other information:
DescriptionThis specification applies to HCU(Hydraulic Control Unit) and ECU(Electronic Control Unit) of the HECU.(Hydraulic and Electronic Control Unit)This specification is for the wiring design and installation of ABS/ESP ECU.This unit has the functions as follows...
Specification
Engine
Transmission
Joint type
Max. permissible angle
Outer side
Inner side
Outer side
Inner side
GAMMA I 1...