Hyundai Ioniq (AE): Engine Control System / Exhaust Gas Temperature Sensor (EGTS). Repair procedures

Inspection
1.
Turn ignition switch OFF.
2.
Disconnect the connector of exhaust gas temperature sensors #1/#2.
3.
Measure resistance between sensor signal terminal and ground terminal.
4.
Check that the resistance is within the specification.
Exhaust Gas Temperature Sensor [EGTS #1, #2 (T3, T4)]
Temperature [°C (°F)]
Resistance (kΩ)
-40 (-40)
0.17
0 (-32)
0.201
100 (212)
0.276
200 (392)
0.35
300 (572)
0.42
400 (752)
0.489
500 (932)
0.555
600 (1112)
0.618
700 (1292)
0.68
800 (1472)
0.739
850 (1562)
0.767

Removal
[EGTS #1 (T3)]
1.
Turn the ignition switch OFF and disconnect the battery negative (-) terminal.
2.
Lift the vehicle.
3.
Disconnect the EGTS #1 connector (A).
4.
Remove the EGTS #1 (B).

[EGTS #2 (T4)]
1.
Turn the ignition switch OFF and disconnect the battery negative (-) terminal.
2.
Lift the vehicle.
3.
Disconnect the EGTS #2 connector (A).
4.
Remove the EGTS #2 (B).

Installation
   
•
Install the component to the specified torques.
•
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.

    Circuit DiagramEGTS #1Harness ConnectorEGTS #2Harness Connector

    Other information:

    Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual: Evaporator Temperature Sensor. Description and operation

    DescriptionThe evaporator temperature sensor will detect the evaporator core temperature and interrupt compressor relay power in order to prevent evaporator from freezing by excessive cooling. The evaporator temperature sensor has the Negative Temperature Coefficient (NTC).

    Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual: Description and operation

    DescriptionRear view monitor (RVM) will activate when the backup light is ON with the ignition switch ON and the shift lever in the R position.This system is a supplemental system that shows behind the vehicle through the AV monitor while backing-up.    â€¢ This system is a supplementary function only.

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