Place the sensitive element of the sensor in hot water and measure the resistance.

Nominal value:
- 2.1-2.7 kOhm (at 20°C);
- 0.26-0.36 kOhm (at 80°C).
If the resistance value differs from the nominal value, replace the sensor.
(The article is based on information website: hyundaibook)
Apply sealant to the sensor threads.

Once the coolant temperature sensor is in place, tighten it and connect the connector to the sensor.
