1. Check the fuses: Locate the fuse box in your vehicle and check the fuses associated with the electric fan. If any of the fuses are blown, replace them and check if the fan starts working.
2. Test the fan motor: Disconnect the electrical connector to the fan motor and apply 12 volts directly to the motor terminals. If the motor doesn't run, it is likely faulty and needs to be replaced.
3. Check the fan relay: The fan relay controls the power supply to the fan motor. Locate the fan relay and check if it is receiving power. If the relay is not getting power, it may be faulty and need to be replaced.
4. Inspect the wiring: Check the wiring harness that connects the fan motor, fan relay, and fuse box. Ensure there are no loose connections, damaged wires, or corrosion. Repair or replace any faulty wiring as needed.
5. Scan for error codes: Use an OBD-II scanner to scan your vehicle's computer for any error codes related to the electric fan. If any error codes are present, look up their descriptions and troubleshoot the issue accordingly.
6. Check the temperature sensor: The temperature sensor plays a role in controlling the fan operation. Ensure the sensor is properly connected and not damaged. If the sensor is faulty, it can send incorrect temperature readings, causing the fan to malfunction.
7. Check the coolant level: Low coolant levels can cause the electric fan to run constantly or not run at all. Ensure the coolant level is at the proper level and top it off if necessary.
If you are unable to diagnose the issue yourself, it is recommended to take your vehicle to a qualified mechanic for further diagnosis and repair.
