2. Wiring issues: Check for any loose, frayed, or corroded wires leading to the cooling fan motor.
3. Faulty Cooling Fan Relay: The cooling fan relay may be malfunctioning, preventing power to reach the cooling fan.
4. Coolant Temperature Sensor: If the engine's coolant temperature sensor is faulty, it may be sending incorrect signals to the engine control module (ECM), causing the fan not to turn on.
5. Blown Fuses: There may be a blown fuse in the circuit that powers the cooling fan. Check the fuse box and replace any blown fuses.
6. ECM Issues: The engine control module may have a software problem or a hardware failure that affects the cooling fan control circuit.
7. PCM Failure: The Power Control Module (PCM), also known as the Engine Control Module (ECM), is responsible for controlling the cooling fan. A failure in the PCM can prevent the cooling fan from functioning.
8. Faulty Cooling Fan Switch: The cooling fan switch detects when the engine coolant temperature reaches a certain threshold and sends a signal to the cooling fan relay to turn on the fan. If the cooling fan switch is faulty, it may not be able to detect the temperature and turn on the fan.
