How does 94 cavalier fan relay work?

The fan relay in a 1994 Chevrolet Cavalier controls the operation of the cooling fan based on the engine temperature. When the engine reaches a certain temperature, the engine control unit (ECU) sends a signal to the relay, which closes the circuit and activates the cooling fan. This helps to lower the engine temperature by increasing airflow through the radiator. If the relay fails, the fan may not operate, leading to potential overheating.