The coolant temperature sensor is a resistor-based (thermistor) sensor, which changes its value according to the change in temperature of the engine’s coolant. Related Post: How To Test Coolant Temp Sensor Wiring With Multimeter Engine Temperature WarningĪccording to the research, the ECT sensor has effects on the following elements. The voltage reading sent back by the ECT sensor is then used to observe the amount of heat that the engine coolant has absorbed from the engine and determines the engine’s temperature using this recorded reading of the temperature of the engine’s coolant. This reading of the temperature of the engine coolant determines the resistance of the ECT sensor the voltage sent by the car ECU is then processed under this resistance and sent back. The ECT sensor of the car does not measure the temperature of the car’s engine directly instead, it measures the temperature of the engine’s coolant and converts those measurements into electrical signals, which are then used to have the correct air-fuel ratio for combustion. This rise in temperature is sent to the ECU, which determines the temperature of the engine, and adjusts the amount of injection of fuel into the combustion chamber. As the car’s engine heats up, the heat is absorbed by the engine coolant, and its temperature rises. The Coolant Temperature Sensor (CTS) also known as the Engine Coolant Temperature (ECT) Sensor (ECTS) is a thermal resistor or thermistor used to measure the temperature of the engine’s coolant (antifreeze) and sends this information to the ECU.Īntifreeze (coolant) is a liquid that is mixed with water to keep the radiator from freezing or overheating in extreme weather conditions. Frequently Asked Questions (FAQs) What Is ECT Sensor What Is An Engine Coolant Temperature (ECT) Sensor. ![]() How Does A Coolant Temperature Sensor Work.
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