1. Blown Fuse: Check the fuse responsible for the radiator fan circuit. If the fuse is blown, replace it with a fuse of the proper amperage.
2. Faulty Fan Motor: The electric radiator fan motor itself may be defective. Check if the motor runs when you apply direct power to it. If the motor does not run, replace it.
3. Faulty Relay: There may be a relay controlling the power supply to the fan. Check if the relay is working properly. If the relay is faulty, replace it.
4. Wiring Issue: Check the wiring connecting the fan motor, relay, and fuse. Ensure there are no loose connections, damage, or corrosion. Repair or replace faulty wiring as needed.
5. Temperature Sensor: Some vehicles use a temperature sensor to activate the radiator fan when the engine reaches a certain temperature. Check if the temperature sensor is functional. If the sensor is faulty, replace it.
6. Engine Coolant Level: Ensure your engine's coolant level is adequate. A low coolant level can affect the temperature sensor readings and prevent the fan from activating.
Always test each component with a multimeter to pinpoint the exact cause of the issue. If troubleshooting and repairs are beyond your technical expertise, it's recommended to seek assistance from an automotive technician.
