Coolant Temperature (ECT) Sensor (Hyundai Getz 1)

The coolant temperature sensor is installed in the coolant pipe on the cylinder head and monitors the coolant temperature and transmits a signal to the engine control unit ECM. A thermistor is used as a sensor, which is sensitive to temperature changes. The electrical resistance of the thermistor decreases as the temperature increases. The ECM determines the coolant temperature based on the value of the sensor signal voltage and sets the optimal enrichment of the working mixture when the engine warms up.

Examination

1. Remove the coolant temperature sensor from the intake manifold.



2. By heating a vessel with water and a sensor located in it, check its resistance.

Temperature	Resistance
-30°C	22.22–31.78 kOhm
-10°C	8.16–10.74 kOhm
0°C	5.18–6.60 kOhm
20°C	2.27–2.73 kOhm
40°C	1.059–1.281 kOhm
60°C	0.538–0.650 kOhm
80°C	0.298–0.322 kOhm
90°C	0.219–0.243 kOhm

3. If the sensor resistance differs from the required value, replace the sensor.

Installation

1. Apply LOCTITE 962T or equivalent to the sensor threads.

The article is borrowed from the website: www.hyundaibook.ru

2. Screw in the sensor and tighten it to the torque specified in the specification.

Tightening torque: 15–20 Nm

3. Connect the connector to the sensor.