AC blower does not working properly

If the blower motor isn't working, start with checking to see if it has power. If it does, the motor is most likely bad. If there is no power, check the blower motor resister and relay. Also, check fuses.

If the blower is working, make sure the coolant is full. If it is full, start the engine, turn the heat on high, and let the engine warm up. Feel both heater core hoses. Both should be hot. If only one is hot, flush the heater core. If both are hot, check the blend door.