1. Faulty Fan Relay:
- Check the fan relay for proper function. If it's damaged, replace it.
- Test the relay by swapping it with a known working one.
2. Defective Temperature Sensor:
- Check the temperature sensor (coolant temperature sensor). If it's faulty, it may be sending incorrect signals to the fan control unit.
- Replace the temperature sensor if it's malfunctioning.
3. Wiring Problems:
- Inspect the wiring harness and connections related to the fan. Check for any broken wires or loose connections.
- Repair any damaged wiring or reconnect loose connectors.
4. Cooling Fan Motor Failure:
- If all else seems fine, the fan motor itself could be faulty. Check for a dead spot or seized fan motor.
- If the fan motor is defective, replace it with a new one.
It's important to address this issue promptly to prevent overheating and potential engine damage. If you're not confident in performing these checks or repairs, consider taking your vehicle to a qualified mechanic.
