Hyundai Accent: Engine Coolant Temperature Sensor (ECTS). Description and Operation

Engine Coolant Temperature Sensor (ECTS) is located in the engine coolant passage of the cylinder head for detecting the engine coolant temperature. The ECTS uses a thermistor that changes resistance with the temperature.

The electrical resistance of the ECTS decreases as the temperature increases, and increases as the temperature decreases. The reference +5V is supplied to the ECTS via a resistor in the ECM. That is, the resistor in the ECM and the thermistor in the ECTS are connected in series. When the resistance value of the thermistor in the ECTS changes according to the engine coolant temperature, the output voltage also changes.

During cold engine operation, the ECM increases the fuel injection duration and controls the ignition timing using the information of engine coolant temperature to avoid engine stalling and improve drivability.

Intake Air Temperature Sensor (IATS). Repair procedures

Inspection 1. Turn the ignition switch OFF. 2. Disconnect the IATS connector. 3. Measure resistance between th ...

Engine Coolant Temperature Sensor (ECTS). Specifications

Specification Temperature Resistance (kΩ) °C °F -40 -40 48.14 -20 -4 ...

See also:

Fuel Tank Pressure Sensor (FTPS). Specifications
Specification Pressure [kPa (kgf/cm², in H2O) Output Voltage (V) -6.67 (-0.068, -26.8) 0.5 0 2.5 ...

Replacement
1. Turn ignition switch OFF. 2. Disconnect the negative (-) battery cable. 3. Disconnect the TCM connector (A ...

Description
The immobilizer system will disable the vehicle unless the proper ignition key is used. In addition to the currently available anti-theft systems such as car alarms, the immobilizer system ai ...