Its job is to measure the temperature of the engine coolant as it flows through the radiator. This temperature reading is crucial for several engine functions:
* Engine Control Unit (ECU) operation: The ECU uses the CTS's data to control various engine parameters, including:
* Fuel injection: A cold engine needs a richer fuel mixture, while a warm engine needs a leaner mixture for optimal combustion and emissions.
* Ignition timing: Ignition timing is adjusted based on coolant temperature for efficient combustion and reduced emissions.
* Engine fan control: The ECU activates the radiator fan when the coolant temperature exceeds a certain threshold.
* Throttle control: In some vehicles, the ECU might slightly adjust throttle response based on coolant temperature.
* Gauges and warning lights: The CTS provides the temperature reading displayed on the car's instrument panel. If the coolant overheats, it triggers a warning light to alert the driver.
In short, the radiator's sensor is a vital component ensuring the engine operates efficiently, reliably, and within safe temperature limits.
