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The blower motor resistor is an electrical component that is a part of the vehicles heating and air conditioning system. Often it will be attached to the blower motor housing itself and in line with the blowers power wire.
Disconnect the electrical connector.
Fix blower motor resistor. Disconnect Your Negative Battery Terminal. Start by disconnecting your negative battery cable. Remove the Glove Box.
Next youll remove the glove box. Itll be easier to work with if you empty it first. Replace the Old Resistor.
Remove the screws. How to fix a fan that doesnt work on low. If your interior AC Heat fan is not working on low or one of the fan settings isnt working then you probably ne.
Plug your replacement blower motor resistor assembly into the appropriate wire connectors until they snap into place. Place the assembly back into the blower box and secure it with the 2 screws do not over tighten. Place the ducting cover back into place and re-insert the clips.
If youve replaced a blower motor resistor and that replacement has failed its time to conduct an amperage test on the blower motor. If the amp draw exceeds manufacturers specifications replace the blower motor. Locate the fuse for the blower motor in the ownersservice manual.
Test the fuse with the ignition key on using the 12-volt test light. Attach the clip lead of the test light to a good ground like a bolt screwed into metal and touch the sharp probe end to the terminals on the fuse. If power is supplied to blower motor through the speed switch and blower motor resistor.
Disconnect the electrical connector at the blower motor. Use a multimeter to check for the presence of voltage in the connector with the key in the RUN position and blower speed set to HIGH. You should see battery voltage 12.
Set the tool to read ohms a measurement of resistance and connect one of its probes to the common output terminal of the resistor. Use the other probe to measure the resistance between the output terminal and each of the resistors input terminals. Measure the resistance between one pair of terminals at a time.
The motor that runs the fan in the heating and air conditioning system in a car is called a blower motor. Its located inside the dash often on the opposite side of the steering wheel or inside the engine compartment on the firewall. A blower motor resistor or a blower motor control module is the part that controls the speed of the blower motor.
If the fan operates at some speed settings but doesnt work at some other speed settings this means that the blower resistor is faulty and should be replaced. Find the blower resistor and detach it from the rest of the circuit. For the precise location consult the repair manual for your cars make and model.
Ford blower motor resistor problems remain the most common solution to interior fan malfunctions on Ford cars and trucks. With that said failed blower resistor assemblies dont solve all of the possible failures. This is why at the bottom of the article we include a 2008 F150 blower motor wire diagram.
The blower motor resistor is an electrical component that is a part of the vehicles heating and air conditioning system. It is responsible for controlling the blower motors fan speed. Purchase a new resistor module at the auto parts store usually less than 25.
Disconnect the electrical connector. Remove the screws and swap out the resistor module. Reconnect the electrical connector and youre car heater blower motor is back in business.
See 100 other super simple car repairs you can do on your own and avoid a trip to the shop. Locate the blower resistor under the dash on the passenger side of the car. Often it will be attached to the blower motor housing itself and in line with the blowers power wire.
Step 2 Disconnect the wire harness connector on the resistor using the small flat-head screwdriver. It comes with the new plug and the resistor and just crimps on. Pretty easy to install and should fix your problem 973-582 HVAC Fan Blower Motor Resistor wWire Harness for 2005-2017 Toyota Tacoma Replace4P1650 JA1772 RU1435 RU746 8713804050 8713804052.
If your 01-05 BMW 325Xi fan has trouble changing speeds you might need to replace the resistor. Check out this video to learn how you can do it yourself. 1A Auto Video Library.
Our how-to videos have helped repair over 100 million vehicles. How to Replace Blower Motor Resistor 01-05 BMW 325 Xi. Order Blower Motor Resistor for your vehicle and pick it up in storemake your purchase find a store near you and get directions.
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