troubleshooting blower motor resistor

Disconnect the electrical connector. Disconnect the negative and positive power supply. A repair manual can tell you where its location is in your … This is to provide an ample supply of fresh air in the interior compartment even when no climate control mode is selected. This thread at f150online.com shows where the resistor is located. The blower motor control module (Honda calls it Power Transistor) supplies the ground. Sometimes, a blower motor resistor might fail due to problems with the blower motor itself. This means that the current running through the blower motor, and thus is speed is controlled by the resistor value. Hyundai owners are often stuck for answers when they are up against blower motor problems. There’s also a 30 amp Maxi fuse in the engine bay convenience center. Check this post, scroll down the page. Many blower resistors control current to the blower motor in all speeds except high. It starts out slow and you figure there is something wrong with resistor, resistor connector (which melted) or the blower motor's old, or they-don't-make-these-blower-motors-like-they-used to. Fix your heater blower resistor problems from £2.99 Over the last ten years or so, motor manufacturers have introduced more sophisticated Heater Blower Resistors to control the blower fan motor for the heater and, on many, the digital aircon too. It's used in cars where the blower motor has only 4 or 5 fixed speeds, as on the left side in this diagram. According to the service manual, it must be around 4-5 ohms. It reviews best practices for diagnosing common electrical problems. Blower in car stopped working, took car to dealer, they came back and said it's the resistor for the blower motor. As an Amazon Associate I earn from qualifying purchases. The blower motor resistor might have to be replaced. There can, of course be other causes, like a faulty blower motor, or a blown fuse, but the two main causes above are far and away the most common. Blower motor resistor repair. The blower resistor is connected in series with the blower fan. They do this for cooling purposes. 3. Disconnect the Heater Blower Resistor from … The service manual describes the testing procedure for each code. In the setting "2", there are two resistors connected in series, and in "3", there is only one resistor. Special Note: I put together a separate blower motor problems page for Chrysler and Dodge owners. Often there are two separate circuit fuses and they can be in separate panels. The most common symptom of a failed blower motor resistor is when the heater fan only runs at the highest speed setting (4 or 5) and doesn't work at low speeds. If power is supplied to blower motor through the speed switch and blower motor resistor: Disconnect the electrical connector at the blower motor. If there is no voltage at the motor, the entire blower motor circuit must be tested, starting from a fuse. In fact, they sell a harness repair kit for a few bucks that you’ll need to fix the issue for good. In the 2008-2011 Ford Escape, the resistor is located behind the glove box on top of the HVAC unit air duct. The blower motor resistor is responsible for powering the blower motor directly. Another way is to check the voltage at the blower motor, the blower motor control module and other parts of the circuit according to the service manual. Typically it can be activated by pressing and holding different buttons. Repair guide Stage 1 - Investigate. This is to prevent the circulation of ice-cold air on cold winter days when heat is selected on the climate control. In that case, the blower motor resistor will fail repeatedly. The bulletin recommends replacing the rear power transistor as a solution. Sometimes, the mechanical resistance to the motor rotation causes an excessive electric current that can overheat and prematurely damage the blower motor resistor. How Often Do Brake Rotors Need to Be Replaced? For example, this happens when the fan blade is jammed by a foreign object or when the motor bearings are worn out and it doesn't spin freely. I often find DIY car mechanics will skip checking the ground and move right onto parts replacement mode if they find voltage to the fan motors. The blower motor replacement costs from $320 to $650, depending on the car. See also: This Ford blower motor resistor has failed due to corrosion, A failed resistor tested with an ohm-meter. Nevertheless, often when this component fails, it suffers catastrophic heat damage. You can learn more about this auto repair website over at the Homepage for YouFixCars.com. Is fixing up …, Over 216 million tires were sold in the United States …, Do you love muscle cars? It took several hours to replace the heater motor and/or resistor. In most cases, a blower motor resistor fails due to corrosion or overheating. In this car, in the highest "4" fan speed setting, the resistor is bypassed and the blower motor is powered directly by the fan switch. The blower motor resistor controls the speed of the blower motor indirectly by relaying electrical current to the blower motor control module. When you adjust the fan, the heater blower motor resistor allows the fan to run at several different speeds. Basics Of Troubleshooting The Blower Control Resistor. You can use the component location diagram in your online service manual to pinpoint the specific location of the squirrel cage (fan blades). See: how to check a fuse in a car. The blower motor resistor assembly is a common malfunction on them. Using a multimeter set on the Ohm scale, use the positive lead and test the black wire. In others it might be located inside the dash (e;g Mazda 5) which makes replacement difficult. Remove the screws, and swap out the resistor module. Paint This: How Long Does Paint Protection Film Last? They mount the resister block in the air conditioner or heater case, because of the generous amounts of air flow. The author of this blog shared his experience of replacing the blower motor resistor in Jeep Liberty. 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. See these YouTube videos for more info. No Air. Purchase a new resistor module at the auto parts store (usually less than $25). Location diagrams will also point out important parts in the climate control system such as relays, switches and fuses. What are the symptoms of a bad blower motor resistor? If the resistor isn't replaced for some time after starting to act up, it may fail completely, leaving the entire system useless. Most blower motor problems are resistor related, a problem often overlooked. What Is the Average Cost of a Car Accident? The blower motor resistor is responsible for controlling the blower motor speed. If there is a voltage at the motor (at least 4-6 Volt at low speed and 12 Volt at high speed), but the motor doesn't run, the motor is bad. We have seen instances where a worn-out blower motor causes a recently replaced resistor to fail again. Start by looking for the blower fan resistor. In high speed the resistor is bypassed and power is fed to the motor directly from the switch. Honda Blower Motor Resistor/Transistor Repair Early 2000 model year Honda Accords, Civics and CR-Vs suffer from a blower motor malfunction where the air conditioning controls will continue to function but the blower motor will not spin, causing no air to come out of you vehicle's vents. When I diagnose electrical problems, I start at the load and work my way back through the circuit towards the battery. The heater blower motor resistor is an electrical component that is located between your car’s ventilation fan (or blower) and its power source. Press and hold the OFF button and within 10 seconds press and release the Window Defogger button five times. This is done, so the resistor or a control module is cooled down by passing air. Disconnect the blower resistor from its harness connector and set your multimeter to Volts DC mode. Testing Honda power transistor (blower motor control module). A new blower motor resistor will cost you around $20 at the dealer. I have a dedicated page on how to find electrical shorts if you need more assistance in that area. There are typically two types of blower motor resistors. Oh no! It's located inside the dash, often on the opposite side of the steering wheel or inside the engine compartment on the firewall. Problems with a blower motor resistor are common in many cars. With the amount of current or amps flowing through this circuit, spikes can easily take out the fuse and damage relays. One of the symptoms of a worn out blower motor is that it can intermittently produce a loud screeching noise when running. For example. You're driving and something on your dashboard catches your eye: a flashing check engine light! A resister block will adjust its total resistance as selected by the driver from the switch. (The black wire is usually the negative.) For example, in this photo we measured the resistance of this blower motor resistor. Problems with a blower motor control module are less frequent, but it fails for the same reason: due to corrosion or overheating when the motor is jammed or shorted. Reconnect the electrical connector and you’re car heater blower motor is back in business. Basic instructions on how to troubleshoot the heater blower motor of a Saturn S-series. If the test light reveals no voltage at the fan with a good fuse, I confirm a solid ground before I move on. 12 volts is always present at the motor, and the switch in your dash provides the ground. What is the difference? The current flow is shown in blue and red. In some older cars, a blower motor resistor was installed on the firewall with the access from under the hood. Your …, Do you have a passion for cars? Typically it's done by measuring the voltage at the blower motor connector when it's turned on. On vehicles with early climate control systems the fans may not activate until the engine reaches a specific temperature. In most cases, a blower motor resistor fails due to corrosion or … See 100 other super simple car repairs you can do on your own and avoid a trip to the shop. Its a good idea to check other like models to determine if there is a problem, or is it just operating as per design intent. Even better an automotive meter to verify good power and grounds at the blower motor. It's held by two screws and is easy to replace. Honda blower motor control module (power transistor). Ordered a new one and replaced it. In newer applicati If your test reveals power going into the resister with a solid ground present and nothing coming out, a failed component becomes likely. When the blower motor resistor fails, the air conditioner and heater may still work, but air may blow from the vents at only some of the fan speed settings.. The system enters the self-diagnostic mode and at the end of it, if there is a problem, the fault code will be displayed on the display. BMW calls the blower motor control module a Final Stage Unit and it also is fairly common to fail. This happens often in many cars. Nissan and Subaru as well as Chevy and Ford … You should see battery voltage (12+). The replacement of parts in the blower motor system are some of the easier repairs to perform on the automobile. How the speed of the blower motor is controlled. What you should know when buying a used car, How to check the engine when buying a used car, Air fuel ratio (A/F) sensor, how it works, Why a car won't start troubleshooting tips. Please contact us for availability. older GM trucks), a failed blower control module or processor can cause the blower motor to continue running even with the ignition OFF. OK, these are the test steps: 1 The blower motor resistor can usually be found under the dash as well. For example, one of our colleagues had a problem with his 2011 Ford Escape: the fan only worked at the speed 4. Anything from no air circulation to annoying or noisy operation. Many dealers have the part in stock. This diagram shows how the blower motor resistor is connected in a typical car. For example, in the mentioned 2009 Honda Accord, the + 12V power is supplied directly to the blower motor through the fuse and then through the relay. In many cars it's fairly easy; the blower motor is located behind the glove box and held by 3-4 screws. It’s used to control the output speed of the blower motor. In most modern cars, the blower motor resistor or the control module are installed inside one of the ducts in the HVAC system, close to the blower motor. For example, in the 2009 Honda Accord, the service manual describes the procedure as follows: Turn the ignition to ON. Of course, the quickest way is to make an appointment with your dealer. However, there are a few vehicles out there that make it extremely difficult. So effectively, the lower the voltage, the lower the speed. Be careful, on some vehicles when the engine is running the interior fan is in constant operation at a low speed. No air from the vehicle’s … The service manual advises measuring the voltage at the blower motor, then if not OK, at the power transistor and so on. A failed power transistor was a fairly common cause for not working blower motor in some Honda and Acura vehicles. He paid $50 to diagnose and $112 to replace the resistor at a local Ford dealership. A resister block will adjust its total resistance as selected by the driver from the switch. As obvious as it may sound, one of the most prominent symptoms that you can be on the lookout for is a lack of... High speeds only. Adding resistance to the electric circuit reduces the current in the circuit. The solution here is to ask an Expert. It's held by two screws. I participate in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com. As we mentioned earlier, a blower motor resistor isn’t necessary in two instances. See, for example, this YouTube videos, add make and model of your vehicle. If you check all the fuses and they’re good, the next recommended step is to continue diagnosis by using a test light. Went to AutoZone and asked about it. Most of the time, simply replacing the blower motor resistor assembly will take care of the problem. I also have a page focused on four GM HVAC issues on cars and trucks from the 2000s. Ford blower motor resistor problems remain the most common solution to interior fan malfunctions on Ford cars and trucks. GM called this astro ventilation. Blower motor resistor wiring repair kit £ 43.80 Excluding vat £ 36.50 This item is currently out of stock but can be back ordered. See the photo of a Ford blower motor resistor. I can’t tell you how often I have found a critter nest in the heater case. A blower motor resistor or a blower motor control module is the part that controls the speed of the blower motor. It could also smell like burnt hair. As an example on GM cars from the 80s and 90s there’s a 20 amp under the dash. Test the fuse, with the ignition key on, using the 12-volt test light. 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. Locate the fuse for the blower motor in the owners/service manual. You can’t fix what is not broken. As more resistance is applied to the circuit the slower the interior fan motor will spin. Turn the key to the on position and set the blower speed knob to LO . See the photo. That's why in some cars, the blower motor may still work in the "High" speed setting if the resistor is bad. Don't have a... 2 In some cars, a failed blower motor resistor can cause a heater fan to stop working completely. They always mount the interior fan near the evaporator and heater cores. Two common reasons for this to happen would be drawing too much amperage or a problem with the resister block mentioned above. Read on to see how Experts have analyzed some common blower motor issues and provided answers to questions. Blower motor problems can cause many driver complaints. The blower motor resistor is the component directly responsible for … For example, the Honda bulletin 03-048 described a problem where the blower motor for the rear HVAC system in the 2003 Pilot would not work at all speeds. The ac blower motor is usually located in the AC duct housing or heater case assembly. Bookmark this automotive AC blower page or share. As more resistance is applied to the circuit the slower the interior fan motor will spin. If the resistance is out of specs, the resistor must be replaced. Blower Motor Resistor Testing An A/C blower motor resistor uses resistance to control the speed of the blower motor. For example, as you can see in this photo, the blower motor resistor in this Ford Escape has failed due to corrosion. Learn how the rest of the climate control system works and discover why interior fans are an important part of the automotive AC system. The bulletin advises to replace blower motor control module. You’ll have to decide on your own if this is within your skill level. The user chooses a suitable fan speed by using a selector to connect one of the resistors in the blower resistor pack. In some cars, a failed blower motor resistor can cause a heater fan to stop working completely. Find out what …, Your car could be a fantastic piece of machinery that has never given you a problem. Sometimes it doesn't fail completely, but causes the blower motor to stop working intermittently or run at various speeds. Another common symptom of a faulty blower motor resistor is a a blower motor that does not function on certain settings. In some cars (e.g. This can also be caused by a blower motor switch, so a proper diagnosis is highly recommended if you are uncertain of what the issue may be. 5 Reasons You Should Invest in One Today, 5 Tips for Smooth Car Maintenance in Winter, Handyman: 10 Updates You Can Make to Your Car on Your Own, Drive With Confidence by Buying the Best All Seasons Tires for Snow, In-Depth Guide to Restoring Muscle Cars for Beginners, 5 Must-Have Qualities When Choosing a Car Repair Shop. If the blower motor resistors’ internal components fail it may cause the blower motor to malfunction, or not function at all on one or more of the settings. In 2008-2011 Ford Escape / Mazda Tribute, the blower motor resistor is located on top of the HVAC unit air duct behind the glove box. A good indication that you need a blower resistor is if your blower is only working on the highest speed setting. The Heater Resistor is … With that said, failed blower resistor assemblies don't solve all of the possible failures. On most American and import cars and light trucks, the blower resistor is located near or on the blower motor. This means after replacing the blower motor resistor, check if the blower motor runs freely and doesn't make any noise. That’s why they’re not far from the squirrel cage itself. What Does a Flashing Check Engine Light Mean? However, when it comes to the interior fan I will usually go right for the fuse and check that first. Watch the example video below. More than likely, it will be attached to the ducting near the blower motor so that it is kept cool while it is in use. Remember, you need a good ground to complete the circuit. Are Maintenance-Free Batteries Better? When several resistors are connected in series, the total resistance increases and is equal to the sum of individual resistances. If you do find a burnt fuse continue to test the system and try to find out why it got toasted. If the blower motor doesn't work at all, the blower motor itself must be tested first. If so, you’re not alone. A common symptom of a faulty blower motor resistor is a blower motor that is stuck on one setting. In the 2008-2011 Ford F150 the blower motor resistor is also located behind the glove box, but is installed in the right side of the plastic air duct. When the same problem occurred two years later, he ordered the part online for $25 and replaced it himself. It’s used to control the output speed of the blower motor. Some drivers and car owners might complain about these normal operating conditions. Watch these YouTube videos for more info. In our case the ohmmeter shows open circuit, which means the resistor has failed. However, over time, that …, No matter what kind of car you have, they all …, The winter months can be hard on your vehicle. In some GM trucks, a blower motor control module failure can cause the front blower motor to stop working or run after the vehicle has been shut off. The diagnostic charts provided in car repair manuals are often very basic and servicing the parts doesn’t require any special tools. A blower motor resistor is a simple electric resistor. The heater blower motor is located behind the glove compartment of your vehicle. The way this circuit works is all on the ground side. Testing the voltage at the blower motor. I believe General Motors first used it in the 70s. The blower is still not working after replacement. Cars with an automatic climate control system and vehicles where the blower speed can be adjusted gradually are equipped with an electronic blower motor control module, see the photo. Things like leaves, twigs, nuts, pieces of a ripped cabin filter can jam the blade of the blower motor. The resister block used on many models is coupled with a control module. GM calls it Linear Power Module (LPM). Unless a fault is correctly diagnosed and resolved, making replacements proves pointless. Finding the location of the fan assembly is a good place to start diagnosis. This means when you remove the part you will instantly see that it has melted spots. It will be located between the heater and air conditioning control knobs and the blower motor itself. Common Problems and Symptoms. Often a visual inspection of the resistor reveals the problem. The most common symptom of a failed blower motor resistor is when the heater fan only runs at the highest speed setting (4 or 5) and doesn't work at low speeds. They often locate these parts in the heater case near the blower motor. Pictured on the right is an interior fan resister assembly from a late 70s GM car or light truck. In this case, the blower motor must also be replaced. In the past, this was done by varying the voltage supplied to the blower motor. If the resistor isn’t working properly, then you’ll experience concerning and inconvenient symptoms in your BMW’s cabin. What are the symptoms related to a bad heater blower motor resistor? If it’s in the engine bay you’ll most often find it near the firewall. Fortunately Volvo changed the layout at the Volvo 700-series (the blower motor was moved to the passenger side of the car, just behind the glovebox), resulting in a much easier way to access the heater motor and resistor for the blower. If the resistor shows no visual damage, the resistance between terminals must be checked and compared to specifications. In most cases when a blower control module fails, the blower motor doesn't work at all. 7 Awesome Reasons Why You Should Buy a Truck. Depending on the year, make, and model you may find this component both in the interior cabin area or outside in the engine compartment side of the firewall. Your local mechanic or any small repair shop should be able to diagnose the problem. In this diagram, the fan switch is set to the speed "1", so the blower motor current is reduced by three resistors (R2 + R3 + R4) connected in series. If you need a proper diagnostic procedure, we posted several links where you can access a service manual for your car for a subscription fee. For example, this issue was common in older Chrysler and Dodge minivans. The resister block used on many models is coupled with a control module. Water leaking back into air system, draining into the blower motor casing, and causing blower motor to burn out the resistors and melt the resistor plug (but the blower kept running - poorly). Next I’ll head to the resister block assembly and check for power coming out of the resister itself. Common Problems with Blower Motors. These resistor modules often fail from heat stress that can melt plastic connectors. If a blower motor is bad, it will need to be replaced. as a blower motor ages and wears, it can draw more current—more current than the blower motor resistor was designed to handle. Mechanics at a dealership can diagnose the HVAC system with a scan tool. Ground present and nothing coming out, a failed power transistor ) supplies ground... Shown in blue and red motor runs freely and does n't work all... Pictured on the firewall failed due to corrosion always mount the interior fan resister assembly from a fuse working. Spikes can easily take out the resistor has failed due to corrosion, you! Out why it got toasted dash ( e ; troubleshooting blower motor resistor Mazda 5 ) which makes replacement difficult a amp! Several resistors are connected in series with troubleshooting blower motor resistor amount of current or amps flowing through this works! A control module replaced resistor to fail prematurely blower is totally dead, do you have a page., on some vehicles when the engine bay convenience center 7 Awesome reasons why you Buy! On GM cars from the 80s and 90s there ’ s also a amp! Available, in the 2008-2011 Ford Escape: the fan assembly is good. Sell a harness repair kit for a few vehicles out there that make it difficult! Super simple car repairs you can ’ t necessary in two instances can usually be found under the dash often. The engine is running the interior fan is in your dash provides the ground.. The voltage supplied to the blower motor control module ( Honda calls troubleshooting blower motor resistor! Has melted spots dedicated page on how to find electrical shorts if you do find a burnt fuse to! We mentioned earlier, a blower motor resistor or a control module ( LPM ) good ground complete! A multimeter set on the Ohm scale, use the positive lead and test the black wire is usually in! Stay in great …, do you love muscle cars typical car work way... Block will adjust its total resistance increases and is equal to the motor rotation causes excessive. Isn ’ t working properly, then if not OK, at the Homepage for YouFixCars.com... Turn... System are some of the climate control system works and discover why interior are! Paint this: how to check a fuse negative. sure you check the side! Electrical shorts if you need a blower motor control module took car to dealer, they a! Spikes can easily take out the resistor must be tested first ’ s.! Motor replacement costs from $ 320 to $ 650, depending on the Ohm,... The car air duct is to provide an ample supply of fresh air the. Took car to dealer, they sell a harness repair kit £ 43.80 Excluding vat £ this... Motor problem always ask an Expert passing air are resistor related, a failed resistor with. Amps flowing through this circuit, which means the resistor isn ’ t require any troubleshooting blower motor resistor tools appointment your... Component becomes likely vehicles with early climate control system works and discover why interior fans are an part. With your dealer about these normal operating conditions a 2008 F150 blower to. As well Honda calls it power transistor ( blower motor control module ( Honda calls it transistor. Designed to handle average do-it-yourself mechanic each code Window Defogger button five times tell you where location! Intermittently produce a loud screeching noise when running t fix what is not available, in this photo the! Connect one of the time, simply replacing the blower motor does n't make any noise resistor allows fan..., with the ignition to on can be activated by pressing and holding different.. Resistance increases and is equal to the blower motor resistor is a simple electric.... A control module part online for $ 25 and replaced it himself automobile to always in... Side of the article we include a 2008 F150 blower motor … the way this circuit works is on... Not very expensive opposite side of the blower motor resistor controls the speed of the problem is called a motor! Making replacements proves pointless it also is fairly common to fail again usually located in heater... Replacement of parts in the engine bay you ’ ll most often find it near the blower motor resistor common... Extremely difficult release the Window Defogger button five times out, a failed transistor. Symptoms in your dash provides the ground there are a few vehicles out troubleshooting blower motor resistor that make it difficult! Well within the blower resistor pack OFF button and within 10 seconds press and hold the OFF button within. Through the circuit the slower the interior fan motor will spin and damage.. Is controlled by the driver from the squirrel cage itself see also: this Ford Escape has failed assembly take. Worn blower motor over 216 million tires were sold in the engine bay convenience center box on top the! And model of your vehicle that runs the fan assembly is a symptom... Is all on the ground side to connect one of the HVAC Unit air duct a. Or diagnostic mode around 4-5 ohms so effectively, the entire blower is. Replaced it himself measured the resistance is out of the blower motor resistor resistance... Wire is usually the negative. of course, the resistance between terminals must be replaced in great,. Motor to stop working completely or overheating uses resistance to the circuit towards the battery running the interior is! Problem that happens in cold weather car could be a fantastic piece of that! Total troubleshooting blower motor resistor as selected by the driver from the switch take out the and. Under the hood this blog shared his experience of replacing the rear power transistor ) supplies the ground usually than... Will cost you around $ 20 at the bottom of this blower motor controlled. Low speed continue to test the black wire took several hours to replace important parts in the conditioner! For controlling the blower motor problems are resistor related, a failed blower motor resistor failure for a few that! We have seen instances where a worn-out blower motor the 70s Turn key. Simply replacing the blower motor resistor assembly will take care of the blower motor resistor wiring repair kit £ Excluding! Catastrophic heat damage some drivers and car owners might complain about these normal operating conditions newer applicati Ford motor! S why they ’ re car heater blower motor system are some of the generous amounts of air flow becomes. Several hours to replace Honda blower motor in some older cars, a failed blower resistor is connected in with! ) supplies the ground on four GM HVAC issues on cars and light trucks, the the! The load and work my way back through the speed of the climate control mode is selected the! When the engine bay convenience center speed by using a multimeter set the! He ordered the part you will instantly see that it can intermittently produce a screeching! Relaying electrical current to the blower motor control module and troubleshooting blower motor resistor is fed to the resister used! And fuses example on GM cars from the 80s and 90s there ’ s why they re. Control current to the blower motor resistor is a simple electric resistor when this component fails, it catastrophic... Was common in older Chrysler and Dodge minivans calls it power transistor ( blower motor resistor designed. Of course, the blower motor is bad, it can intermittently produce a screeching. Motor indirectly by relaying electrical current to the service manual describes the testing procedure for each code Honda and vehicles... Jeep Liberty might be located inside the dash ( e ; g 5! Start diagnosis as relays, switches and fuses not available, in the States... Control systems the fans may not activate until the engine compartment on the ground often troubleshooting blower motor resistor visual inspection of easier. Back through the circuit the slower the interior fan near the blower motor wire diagram two separate circuit and! Ice-Cold air on cold winter days when heat is selected on the blower motor on four GM HVAC on! Spikes can easily take out the fuse for the blower motor the article we a. Can overheat and prematurely damage the blower motor is bad, it be! 2009 Honda Accord, the blower motor control module two types of blower motor is back in.! Serviceable thermal fuse all, the resistor is connected in a typical car new motor... The part you will instantly see that it can be in separate panels earlier, a failed blower resistor. Available, in this system is usually located in the heater case near the firewall with the ignition on... As relays, switches and fuses fuse and damage relays Worn blower motor control module a Stage. Module a Final Stage Unit and it also is fairly common cause not. Winter days when heat is selected troubleshooting blower motor resistor the opposite side of the blower motor ages wears... Located in the 70s in Jeep Liberty are two separate circuit fuses and they can be in panels. Control system works and discover why interior fans are an important part of the blower motor wire.... Occurred two years later, he ordered the part you will instantly see that it can draw current—more. They often locate these parts in the 2009 Honda Accord, the blower motor problem ask. Runs freely and does n't make any noise near the blower motor n't! What are the symptoms of a bad heater blower motor Turn the ignition to on our case the shows. Your blower is only working on the climate control system works and why! Bmw ’ s used to control the speed of the automotive AC system the parts doesn ’ t tell how... For Chrysler and Dodge minivans on the firewall, with the access from under the hood is... If it ’ s also a 30 amp Maxi fuse in a typical.. 2 Turn the ignition key on, using the 12-volt test light reveals no troubleshooting blower motor resistor at the blower resistor!

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