1. Blower motor fuse: Check the fuse labeled "blower" or "heater" in the fuse box. If the fuse is blown, replace it with a fuse of the same amperage.
2. Blower motor relay: The blower motor relay is responsible for supplying power to the blower motor. If the relay is faulty, it will need to be replaced.
3. Blower motor resistor: The blower motor resistor controls the speed of the blower motor. If the resistor is faulty, it will need to be replaced.
4. Blower motor: If the blower motor itself is faulty, it will need to be replaced.
5. Electrical connection: Check the electrical connections between the blower motor and the wiring harness. Make sure the connections are clean and secure.
If you are unable to diagnose the problem yourself, it is best to take your vehicle to a qualified mechanic for further inspection and repair.
