What is the function of the blower motor switch?
What is the function of the blower motor switch?
The blower motor switch is the physical control switch for the AC blower settings, and is therefore critical to the overall functionality of the AC system.
What to do if your blower motor switch is bad?
The blower motor switch is the physical control switch for the AC blower settings, and is therefore critical to the overall functionality of the AC system. For this reason, if you suspect that your blower motor switch has a problem or fault, have the vehicle’s AC system diagnosed by a professional technician, such as one from YourMechanic.
Where does the power transistor go in a blower motor?
The power transistor has 4 wires: two come from the climate control system control unit, one is the ground, one goes to the negative terminal of the blower motor. The service manual advises measuring the voltage at the blower motor, then if not OK, at the power transistor and so on.
Where is the blower motor on a car?
Broken knob The blower motor is the electrical switch on the interior of a vehicle that allows the driver to control the vehicle’s heating and air conditioning system. It is usually built into the the same control panel that houses all of the AC system controls, and is labeled with numbers and symbols to indicate blower fan speed.
What happens when the blower motor switch goes bad?
Since the blower motor switch is the direct control for the blower motor speed, when it malfunctions or has any problems it can affect the functionality of the entire AC system and should be serviced.
Is there a way to test the blower motor switch?
The cool thing is that diagnosing/troubleshooting the blower switch isn’t hard. The following circuit descriptions will help: Chassis Ground. Input From Blower Motor. M2 Speed Output. M1 Speed Output.
Can a blower switch be replaced in an A / C heater?
Replace the blower switch in the A/C-Heater control panel with a new one to solve the problem. To comparison shop for the blower control switch, take a look at this section here: Where To Buy The Blower Switch And Save. CASE 2: All circuits tested had continuity where indicated in the test steps.
When do you need to replace the blower motor relay?
If the blower motor does not function, car fuses are blown, or relays are melting, you may have to replace the car blower motor relay. 1. Blower motor does not function 2. Blown fuses 3. Melted relay The blower motor relay is the electrical switch that is used to supply the power for the vehicle’s blower motor.
