A coolant temperature sensor, abbreviated as CTS, is a crucial component of a vehicle’s engine management system. Its primary function is to monitor the temperature of the engine coolant, which is a mixture of water and antifreeze that circulates through the engine to absorb and dissipate heat.
Maintaining optimal engine temperature is critical for efficient operation and longevity. The coolant temperature sensor provides real-time data to the engine control unit (ECU), which uses this information to adjust various engine parameters, such as fuel injection, ignition timing, and fan speed. Accurate coolant temperature readings are essential for the ECU to make informed decisions and maintain optimal engine performance.