- The blower motor resistor(BMR) is responsible for controlling the speed of the blower motor. If the resistor fails, the blower motor will not receive power, and the fans will not work.
2. Blower motor failure.
- If the blower motor itself fails, the fans will not work.
3. Electrical connection issues:
- Check for any loose or corroded electrical connections between the blower motor, the blower resistor, and the power source.
4. Blower motor relay issues:
- The blower motor relay is a switch that controls the power supply to the blower motor. If the relay is faulty or damaged, the blower motor will not receive power, and the fans will not work.
5. Faulty switch or control module:
- If the switch or control module that operates the blower motor fans is malfunctioning, it could prevent the fans from turning on.
