Hyundai Elantra: Engine Control System / Intake Air Temperature Sensor (IATS) Description and Operation
Intake Air Temperature Sensor (IATS) is included inside
Manifold Absolute Pressure Sensor and detects the intake air
temperature.
To calculate precise air quantity, correction of the air
temperature is needed because air density varies according to the
temperature. So the ECM uses not only MAPS signal but also IATS signal.
This sensor has a Negative Temperature Coefficient (NTC) Thermister and
it's resistance changes in reverse proportion to the temperature.

Inspection
1.
Connect the GDS on the Data Link Connector (DLC).
2.
Measure the output voltage of the MAPS at idle and IG ON.
ConditionOutput Voltage (V)IG ON3.9 ~ 4.1Idle0.8 ~ 1.6
Remo ...
Specification
Temperature [°C(°F)]Resistance (k?)-40(-40)40.93 ~ 48.35-20(-4)13.89 ~ 16.030(32)5.38 ~ 6.0910(50)3.48 ~ 3.9020(68)2.31 ~ 2.5740(104)1.08 ~ 1.2150(122)0.76 ~ 0.8560(140)0.54 ~ 0.6 ...
Other information:
Hyundai Elantra AD (2016-2020) Service Manual: Repair procedures
Adjustment
1.
After loosening the hinge (A) mounting bolt, adjust the hood
(B) by moving it up and down or from side to side and tighten the bolt.
2.
Adjust the hood height by moving the hood overslam bumpers (C) up and down.
3.
After loosening the hood latch (D) mounting bolts, adjust ...
Hyundai Elantra AD (2016-2020) Owners Manual: Service information
If the remaining mileage or time reaches 900 miles (1,500 km) or 30 days, the
service symbol () will blink for several
seconds each time you set the ignition switch or Engine Start/Stop button to the
ON position.
Information
To change or deactivate the service interval, consult an authoriz ...