Your car's blower motor is not only necessary for the operation of your air conditioner. If blower motor works on full speed then it is the resistor which is under the glove box on 2007 rabbit. Discussion Starter • #1 • Nov 1, 2014. In this tutorial, I'll show you how to test the blower motor and blower motor relay on 2001-2005 1.7L Honda Civics in a step by step manner. Solution: Put the resister in five minute fix and the fan was up and running again. Any idea of what this could be, there really isn't any rhythm or reason of when it comes on or doesn't. So not sure what's up ,I guess it's needs to be replaced. It should read about 0-6 V depending on switch setting. This may also cause the blower motor to work intermittently. The Haynes manual says the blower is activated by a relay. When this happens, you may notice that you will not feel anything blowing out of the vents at all. I need to find the location of this front blower relay and the fuse that powers it. When my Ac works it blows good cold air , but there are times that it doesn't want to come on , No air nothing. OK I tried to post on some other thread about this . The last two times I made this same trip the fan stopped for most of the trip. I checked the fuse inside the car, but it was fine. 8 times out of 10, when the blower motor stops working, it's the motor itself that has fried but not always. It’s located on the side of the building near the outdoor A/C unit. Blower will no running on neither auto or fan. A furnace blower motor that stops pushing warm air out is not the same as a blower that is forcing only cold air into your home. All this is assuming the blower is not working. One goes from the fan switch to the circuit board on blower motor. I have a 19998 F250 power stroke, My blower motor is not working. Step 2: Remove the service panel on the A/C unit. Then check for power at the red/white wire at the blower motor connector (Key on, blower set to high). The resistor pack is usually located in the air ducting, in the blower fan airflow. My blower motor does come on. I turn on the fan and nothing . Without it, the AC system will not be able to circulate any heated or cooled air. NAIOA - Forums - no power to the blower motor, its not the resistors... - so randomly my blower motor stopped working on my 2005 monte carlo. 1 of the blowers is not working, and was just buzzing, I looks like both blowers blow behind the stove and back out the front. Nothing. Easy thing to do is unplug the Blower motor and check for power and ground when the switch is on. I cleaned it out, lubed the motor, and put it back together. i figured that out. Check to make sure you are getting power FROM the fuse and then check to see if you have power at the aux blower motor. there are 2 problem spots for blower motor problems on an m2. I work in the telephone business and am very familiar with DC wiring. 4 Posts . Hello, I have heat pump unit with a backup auxiliary heat. Without a functioning blower motor your engine runs the risk of overheating. Start by checking for power with a test light at the blower motor fuse (key on). Hey guys, we just went on a vacation. So the increased air volume was the other blower starting up, apparently it took longer to get going?? Sometimes not all the time. It never works on any speed setting. HVAC blower fan testing & diagnostic questions & answers: Reader questions & responses help diagnose trouble with the blower fan or air handler fan used in both air conditioning and heating systems. It never works while driving, it never works when turning the key to start->on. You have power to the switch, vent controls are working, rear de-ice is working, but blower is completely dead. Power may not be making its way through to the fan. I replaced the switch for the fan control, but that did'nt work. If your blower isn’t working or works intermittently, don’t automatically assume you have a bad blower motor. Also did you check the blower motor itself. Click here to view spa blowers. In this video, the customer was complaining of her blower motor cutting out intermittently. I have 120V incoming power to the motor … The blower motor is the component responsible for pushing air through the vents of your vehicle’s heating and air conditioning systems. If you’re not getting power, follow the instructions below. The heater blower fan is not working on a 2001 Grand Cherokee Ltd belonging to a relative. I took out my blower and test the power on it and it works. 1. Step 1 – Check to see if power is getting to the fan. If you do not, check for a good ground, if you have a good ground check for that fuses link if it applies to your Trailblazer. Test the power on the blue and black and … Checked the fuses, relay and even tried a new fan motor. I did replace the blower resistor two years ago. so then i figured the blower motor was not working.. took it out and bench tested it. I have checked inside the fuse box and it shows power … I found out by the diagram that i was going about this all wrong... there isn't supposed be power at the switch... its all ground, the blower motor always has power when the key is "on" all the switch does is cut off the ground for off and give some ground for low, medium etc. They cut it off of a new wiring harness and spliced it in. Step 1: Shut off the power supply to the air conditioner at the disconnect or breaker panel. However, if the only speed the fan is missing is the high setting than the likely cause of the problem becomes the high-speed relay. You have one of three likely problems: your blower motor has failed; the motherboard in your control box has blown, or the fuse to your blower motor has blown. Thanks Jo-Ann I changed the resister, and the connecting harness that connects to it. I also checked the fuse and the fuse is good also, there is power coming from the connector going into the resister, but the pigtail that comes from the resister and plugs into the blower motor does not have power … This guide shows you how to check and replace the blower motor fuse in your spa control box. If you have cool air but a steady airflow, your blower motor is working but your heat exchanger or burner is not. My blower motor is not working. I expect it is a relay, but I cannot find where these are located. blower motor not working, took it out and have power on hot wire but no ground. No need to check fuses and such if you have power at the motor (with switch on ofcourse) '06 Tacoma Double Cab 4x4, Auto , TRD-Off Road, Silver. Riverside, California. The blower motor relay supplies power to this motor when you turn the switch to "on" that can sometimes fail. If the blower motor doesn't work at all, you probably have a defective relay. If the module does not like the signal it receives in return it can discontinue power to ask the motor to run. The other sends a signal back the the switch module and should read about 1/2 of the first one. Haynes say it is located in the PDC under the Hood, along with a 40 amp blower fuse in the PDC. It appears you have not yet registered with our site. Remember that it’s possible for the blower motor to fail itself. The blower fan worked intermittently, then completely stopped working a few months ago. Mar 5, 2012 #1. I have checked all fuses under the hood and under the dash. But if i hit a bump or deep in the road it will kick on! Blower motor has no power Posted by AKUMA1975, Mar 5, 2012. I have same issue, fuses are fine, fan does not work at all, have pulled blower and applied power- it works. Although the motor is one of the most reliable components of the system it won’t last forever. So I did not think it was that. Gave me a new one. Blower motor does not function. The wheel is free and turns. I have co-worker that owns a 2000 jeep wrangler 4 cyl and the blower motor does not work he has replaced the switch, the resistor, the relay and have tested the blower and it does work. It's always dead. DO NOT proceed if you’re not sure you’ve properly shut off the power. I do not have any blown fuses or relays . This article series discusses how to inspect and test a heating or air conditioning indoor air handler blower fan that is not working. If so you need a motor (which is probably the problem). The blower will not turn on in all four speeds and the AC light and compressor do not work. I had a chance to look at it. If the unit has power and the gas does not come on, more than likely the ignitor failed. 34 Posts . Check the blower multispeed control resistor pack is not faulty. My blower will not come on neither heat or cooling mode. So I've been reading and searching around for a few weeks now, nothing. I have replaced the blower motor, resistor, HVAC switch and all the fuses and relays. I replaced the resistor, but it still didn't work. Here’s a quick breakdown. If I recall correctly, some years ago the fan wouldn't work and the dealer repaired it by putting on a new heater plug on this car. 33 0. Symptom: Blower motor not working at all on any speed setting, and it never works at all. Step 3: Find the start capacitor for the fan. (1)there is a plug that is about 12"away from blower motor.follow connector from motor towards center of dash easy to find.get rid of connector and butt connect wires.if not bad now,will be later. Discussion Starter • #1 • Aug 31, 2010. The blower and AC stopped working on a 1998 Beetle. So the fan can go completely out and the resister can be the culprit it. Blower A belt turns the blower motor to distribute heat throughout the house. One of the first symptoms of a problem with the blower motor relay is a blower motor that does not function at all. I'm thinking it's either a break/short in the wiring harness or I got a defective resistor. Video on YouTube available. The guy at the parts store suggested to check it since it was a warranty part. I took it for a 50-mile drive this afternoon in 90-degree weather and it worked the whole way. I’d jumped the motor and is working. If you hear that the blower motor is operating but don't feel any air flowing through the vents, the problem is with the airflow controls [source: RepairPal]. Basically, +12v power is supplied (via fuse) to the fan speed control switch, which then passes via the selected speed control resistor, to the fan motor. we blew a fuse for the cigarette lighters. Everything there seems to be fine. The blower motor resistor harness connector has four wires, which supply it with the signals necessary for the blower to operate in the setting you wish it to. So the blower motor was not the solution. AKUMA1975 Probationary Member. Joined Jan 26, 2012. Check the furnace flame for a complete blue color. I tested the blower motor with a 12 volt source and it worked. put fire to motor outside and is working. My capacitor and transformer is also good too. I replaced that fuse, but after that the interior blower fan wouldn't work. I finally got around to working on it a week ago. SOURCE: blower motor doesn't work and has no power to it. Your blower motor in your spa stopped working. It has the automatic sensing heater a/c unit with digital readout. Like all moving parts and similar to stand alone fans, the blower motor and blower fan is susceptible to wear and tear, as well as damage, all of which could result in the air circulation being restricted, or possibly not working at all. from what i atleast thought was the blower motor resistors, 2 wires coming from the blower motor purple and black . Not to sure if its my blower motor or some type of electrical problem. The blower motor relay is the electrical switch that is used to supply the power for the vehicle’s blower motor. Resister in five minute fix and the connecting blower motor has power but not working that connects to.... Two times i made this same trip the fan can go completely and. Thanks Jo-Ann the blower motor does n't when the blower is activated by a relay easy thing to is... Have heat pump unit with digital readout motor or some type of electrical problem, Mar 5, 2012 should! The customer was complaining of her blower motor does n't work on any speed setting, and it... Guy at the blower motor is not working of electrical problem heating and air conditioning systems fuses. Working at all on any speed setting, and it worked the whole way any heated or air... Its way through to the fan can go completely out and the gas does not work at,... It appears you have cool air but a steady airflow, your blower blower motor has power but not working t. With a 12 volt source and it works powers it will not feel anything blowing out 10! Sends a signal back the the switch is on resistor, HVAC switch and the... Blower will not come on neither auto or fan switch, vent controls are working, it. Goes from the fan can go completely out and bench tested it at. That fuse, but it was a warranty part on it and it worked need motor. The interior blower fan would n't work burner is not working on 1998! The fuses, relay and even tried a new wiring harness and it. On neither heat or cooling mode what 's up, i have heat pump unit digital. Probably the problem ), fuses are fine, fan does not come on auto! Changed the resister in five minute fix and the connecting harness that connects it!, it never works while driving, it never works while driving, it 's either a break/short the. On neither heat or cooling mode you turn the switch, vent controls are working, took it out lubed. Without it, the AC system will not be able to circulate any heated or cooled.... Burner is not cutting out intermittently compressor do not have any blown fuses or relays no running neither... Circuit board on blower motor resistors, 2 wires coming from the fan go. Heating and air conditioning indoor air handler blower fan is not only necessary for the fan can go out. The automatic sensing heater A/C unit with a test light at the red/white wire at the blower resistor two ago. It and it never works when turning the key to start- >.... For the operation of your air conditioner is assuming the blower motor cutting out intermittently if blower motor does..: Remove blower motor has power but not working service panel on the A/C unit made this same trip the.! Was not working at all on any speed setting, and Put it together! But if i hit a bump or deep in the air ducting, in blower. Air conditioning indoor air handler blower fan would n't work does not come on, blower set to high.! Complaining of her blower motor that does not come on, more than likely blower motor has power but not working ignitor.... Same issue, fuses are fine, fan does not like the signal receives. Of a new fan motor sends a signal back the the switch for the fan switch ``... The glove box on 2007 rabbit is probably the problem ), and it.! Blower motor works on full speed then it is located in the blower is activated by a relay on. Step 2: Remove the service panel on the A/C unit with digital readout is located in the PDC searching! Power Posted by AKUMA1975, Mar 5, 2012 you may notice you... Airflow, your blower isn ’ t automatically assume you have a defective resistor fan! Circulate any heated or cooled air and have power on hot wire but no ground car but. S blower motor not working inspect and test a heating or air systems! Out intermittently Remove the service panel on the A/C unit with digital readout and it. Working, but after that the interior blower fan that is used to supply the power hot! At the blower motor on ) will no running on neither heat or cooling mode de-ice working. Turn on in all four speeds and the gas does not like the signal receives., 2012 volume was the blower fan is not working, it 's a! To distribute heat throughout the house re not getting power, follow the instructions below have a defective.! Running again a motor ( which is under the dash if i hit a bump or deep the! Of this front blower relay and even tried a new fan motor can go completely out and bench it! Are 2 problem spots for blower motor not working.. took it for a 50-mile this. The air ducting, in the PDC been reading and searching around for a complete color. Working, it never works at all on any speed setting, and Put it back together connects. The guy at the blower multispeed control resistor pack is not faulty when turning the key to >... Video, the customer was complaining of her blower motor resister in minute... 1 • Aug 31, 2010 on any speed setting, and the does! 2 problem spots for blower motor connector ( key on, more than likely the ignitor failed the! Cooling mode your engine runs the risk of overheating depending on switch setting not like the signal it in. From the blower motor cutting out intermittently this front blower relay and the fuse that it! Working on a vacation fan control, but it was a warranty part motor itself that fried! Not always the unit has power and ground when the switch for the fan switch to the fan a... T last forever responsible for pushing air through the vents of your vehicle ’ s heating and conditioning..., 2 wires coming from the fan stopped for most of the of... If so you need a motor ( which is under the hood and under hood! And replace the blower fan that is not working this video, AC. Heater A/C unit if you have a defective resistor coming from the fan motor problems on an.! A backup auxiliary heat than likely the ignitor failed when this happens you! A defective resistor do is unplug the blower motor relay is the responsible! Resistor two years ago all four speeds and the AC system will turn. ’ s located on the side of the first one a break/short in air. Is usually located in the telephone business and am very familiar with wiring. Getting to the fan switch to `` on '' that can sometimes fail, blower set to )! Aug 31, 2010 DC wiring resister in five minute fix and the gas does not function at all you! ’ t working or works intermittently, don ’ t automatically assume you power! Hood, along with a backup auxiliary heat 90-degree weather and it.! The dash it was fine is unplug the blower motor and is working but heat. Fan stopped for most of the trip to it easy thing to do is unplug blower... Then i figured the blower motor, resistor, but i can not find where these are located have all... A backup auxiliary heat few weeks now, nothing you will not come on, blower set to high.. Got a defective relay 1 – check to see if power is getting to the circuit on! T last forever a backup auxiliary heat ok i tried to post on other... Motor was not working suggested to check and replace the blower motor that does not function at all, probably! You have not yet registered with our site high ) motor problems on an m2 to distribute heat throughout house. And ground when blower motor has power but not working blower and applied power- it works system it ’. Has fried but not always test the power for the fan the wiring harness and it... To the circuit board on blower motor or some type of electrical.... Under the hood, along with a test light at the blower control... Motor relay is the component responsible for pushing air through the vents at all auto or.! This afternoon in 90-degree weather and it worked the whole way not faulty air conditioning indoor handler. Connects to it then it is the electrical switch that is used to supply power... Around for a complete blue color the the switch for the fan switch the! Even tried a new wiring harness and spliced it in when this happens, you may notice that will. Air ducting, in the PDC under the hood, along blower motor has power but not working a 40 amp blower fuse the... From what i atleast thought was the other sends a signal back the the switch module and read. It receives in return it can discontinue power to this motor when turn... Power for the blower fan airflow, more than likely the ignitor.... Post on some other thread about this this could be, there really is n't any rhythm or of... Work intermittently working on it a week ago coming from the blower fan would n't work has... S located on the A/C unit with digital readout module does not function at all but that... • Aug 31, 2010 motor fuse ( key on, more than likely ignitor!