Dependence of the resistance of the coolant temperature sensor on temperature
Location of the coolant temperature sensor on a four-cylinder engine
The coolant temperature sensor is a thermistor that changes its resistance with temperature. As the temperature of the sensor decreases, its resistance increases, and as the temperature increases, the resistance decreases.
1. To test the coolant temperature sensor, measure its resistance at various temperatures.
2. If necessary, check the electrical circuit of the coolant temperature sensor.
3. To remove the sensor, remove the electrical connector from the sensor and unscrew the sensor.