The coolant temperature sensor is responsible for sending signals to the engine control module (ECM) about the temperature of the engine coolant. If the sensor is faulty, it may send incorrect signals to the ECM, which could cause the cooling fans not to turn on.
2. Faulty Fan Relay
The fan relay is responsible for supplying power to the cooling fans. If the relay is faulty, it may not be able to provide power to the fans, causing them not to turn on.
3. Faulty Fan Motor
The fan motor is responsible for driving the cooling fans. If the motor is faulty, it may not be able to turn the fans, causing them not to turn on.
4. Faulty Wiring
The cooling fans are powered by electrical wiring. If the wiring is faulty, it may not be able to provide power to the fans, causing them not to turn on.
5. Blown Fuse
The cooling fans are protected by a fuse. If the fuse is blown, it will not be able to provide power to the fans, causing them not to turn on.
6. Low Coolant Level
If the coolant level is low, the cooling fans may not be able to turn on. This is because the coolant is responsible for transferring heat from the engine to the radiator, and if there is not enough coolant, the fans will not be able to cool the engine down.
