Do you just want to verify the resistance or measure the voltage drop accross the resistance. The red is the power supply to the fan motor,via switch and speed resistor,. You will find the best deals on Original Mastech Ms8360f Auto Range Digital Multimeter Dmm Frequency Capacitor and other equipment here. Any time I do a blower motor or have a blown fuse, I will always check the current draw just to be sure. A reading of zero indicates a short in the winding, while an infinity symbol means there is an open in the winding somewhere. Finding the blower motor resistor should help fix the climate control mechanism. The HC39AE206 Bryant Carrier Air Handler Blower Motor replaces blower motors with part numbers: HC39AE206A, HC37AE207, HC37AE212, HC37AE201, HC37AE211, HC39AE211, HC39AE205 and HC39AE207. How do I test my blower motor resistor in my dodge mega cab? 5. Replacing The Blower Motor. I also have a page focused on four GM HVAC issues on cars and trucks from the 2000s. How to properly test the amps on the compressor and blower motor? If your multimeter has what looks like a loop on top, then its alot easier to get the running. So the reduced voltage can then travel on to the blower motor. If the plug has power, replace the blower motor. Plug the black test lead into the common jack and the red test lead into the V/Ω jack. Also, check the wires from the fuse panel to the blower connector to see if they have any breaks, cuts, insulation rubbed off, etc. How To Troubleshoot the wiper motor and switch on your automobile. Now take your voltmeter and switch it to ohms. To check the circuits from the blower switch, unplug the. Use a meter to check the fuses. If the motor does not have continuity, replace it. You can test this with a multi-meter TJMA-DMT3. There's a bunch of different areas of where you can work, but in this tutorial, you'll find out how to check the antifreeze coolant using a multimeter. It’s used to control the output speed of the blower motor. The range can be adjusted if necessary. When you put your lead on the negetive you are checking for power and when lead is on power you are checking for ground. Turn off the power to the furnace by switching off the disconnect switch located near the furnace. If not check for presence of 110 volts at the power plug at the TOP of the heater. You can check whether the motor is receiving sufficient power from the power supply by using a voltmeter, aka as a multimeter. A bad capacitor can cause a motor to fail and burn up especially when heavy load conditions exist. If you are using a multimeter to measure amps do not forget to set your meter's function switch to Amps. A continuity test tells us whether two things are electrically connected: if something. If you are using a test light instead of a meter connect the ground clip of the meter (red arrow) to the other pin at the blower motor. Unfortunately in Florida right now I have no use for heat. Testing the blower motor is as simple as applying battery power and ground to the blower motor terminals. Determine whether your dryer's motor requires troubleshooting, replacement or repair by testing it with a multimeter under expert instruction from Partselect. The dryer drum is turned by a motor, which also operates the dryer’s blower. However, if the VFD is used to regulate the speed of the motor, when the system flow rate requires to be reduced, the revolving speed of the roots blower can be decelerated. One is to put the meter on the ohmmeter setting and take the resistance of the capacitor. The blower switch connects the resistors to ground to complete the circuit. For example, a 200 ohm resistor with a tolerance of 5 ohm should have a multimeter reading between 195 and 205 ohms if it is working correctly. Plug the dryer in and start motor. If you test power at the blower motor plug…and also notice that voltage responds to the switch (multi-meter time)…then you will know the switch is working properly. The blower motor resistor is usually mounted near the blower motor in the HVAC housing with only the connector visible. Test the new fan motor, before replacing the AC shroud, to check for proper alignment and fan clearance. Cleaning is a very difficult and time-consuming work. A relay that passes this test will probably be ok, but if you still suspect the relay you can easily verify finer electrical properties by continuing. Using a multimeter, test for continuity between the leads on the switch. If you don't see current check the IGN fuse under the hood in your junction box. Finally, the blower motor retaining screws will be removed, followed by the blower motor. The user chooses a suitable fan speed by using a selector to connect one of the resistors in the blower resistor pack. Make an Inquiry for High Speed Vertical Soft Winding Machine at OKorder. When checking out a starter motor it is a good idea to remove it from the car and lock it firmly in a vice. The display should show OLΩ because, in Resistance mode, even before test leads are connected to a component, a digital multimeter automatically begins taking a resistance measurement. Always test your test equipment for proper operation before use. ) Using a multimeter set on the Ohm scale, use the positive lead and test the black wire. Turn off the supply to the circuit you are working on and check for 0V. How To Test a vehicle alternator with a standard multimeter. The motor must be uncoupled from the load. Position 4. The most conclusive test of a blower motor is to. The new blower has the plastic adapter and I had to trim some of the air box as the instructions said. Turn off the multimeter Once the resistance measurement has been made, it is wise to turn the function switch to a high voltage range. Check voltage to the appropriate terminals. On our 1997 BMW 540 the wire is black/green. Remove the fasteners on the blower motor mounting flange. A furnace usually uses a run capacitor to maintain a relatively constant voltage supply to the blower motor. Turn the voltage up slowly from zero, up to the motor's rated voltage. Posted on April 2, 2015 January 23, 2017 by Steve Arnold — 43 Comments How to test and troubleshoot gas furnace pressure switches. DC motors draw power from deep cycle (DC) batteries. Re: Root cause insight into the common BMW blower motor resistor failures: > >> > If the failure is that the blower motor doesn't run at all, they are >> > probably failing open. For two-cylinder engines, you should test each cylinder to make sure you do not have a bad connection in the HV wires. If your vehicle has been running roughly or losing power, there may be a lack of pressure in one or more cylinders. This test can be done in your own workshop using simple hand tools and a specialized electric testing device. Testing Blower Motor Resistor I am trying to figure out why I only get two speeds on my AC/blower motor. Then start the engine and watch the tester window. When testing roll the test leads in the terminal to ensure proper connection for a correct reading. This was well within. A reading of zero indicates a short in the winding, while an infinity symbol means there is an open in the winding somewhere. Its been sporadic over the last year but finally quit all together. Only trouble is, now my blower spins nice and quietbut I have no air (and the old blower managed to find its way to the trash before I knew it! ). To test a single-phase motor, first remove the cover of the motor's wire, and disconnect the wires. To test a capacitor with a multimeter, discharge the capacitor, set the multimeter to test for resistance then interpret the reading. ) Here is a good basic video that shows how to use a multimeter for checking continuity of a wire. The other sends a signal back the the switch module and should read about 1/2 of the first one. How to Test Resistors. Place one lead of the Ohmmeter on terminal 1 of the resistor. Cleaning is a very difficult and time-consuming work. How to test hvac blower motor relay? Blower decided to die in today's 90 degree weather. I have an issue with the blower motor in my Carrier furnace (58STA090). With a PSC motor, jumping 120v directly to the motor is a quick way to verify good or bad (assuming the capacitor is good). The heater/blower motor on my M1008 works on occasion. Use voltmeter or ohmmeter to check for a blown fuse. If debris is not the issue, it's time to get out the multimeter and check for AC voltage across the motor's contacts. You will test for power to the motor. Depending on the exact location of the blower motor (on your specific 3. Is the fact that i'm getting power to the motor enough to let me rule out the module?. How To Properly Select a Fan or Blower Explanation or in metric equivalent, it is rated in Pascal's (Pa). When measuring blower amperage the panels must be in place which can be difficult to accomplish on some system types making a wireless connected ammeter very handy where the meter can be put in place and the panels put back on for testing. In this article we will discuss what occurs when your vehicle’s blower motor won’t run or will only run on one speed. If there is any problem, go to the motor, disconnect the cable - thus isolate the motor- and check the motor terminals again. A common problem among vehicles is heating concerns. So that the roots blower can operate at the low flow point under the. You could really simply substitute the blower motor by your self, it's not way too hard. How To: Troubleshoot a heater blower motor How To: Make an electric toothbrush out of a vibrator How To: Build a one-string electric bass guitar How To: Remove the blower motor on a Chevy Impala How To: Find, test, and replace the blower resistor on a Chrysler. A bad motor can sometimes stick, or feel like it's got a lot of friction. Let us know what you find. Troubleshoot continued problems by using a multimeter (service part number 19602) to see if your battery drains power while not in use. Now check the ground connection. Get the best deals on Test Equipment Digital Tachometers when you shop the largest online selection at eBay. Hotel Engineering SOP for Sewage Air Blower Maintenance. If there is any problem, go to the motor, disconnect the cable - thus isolate the motor- and check the motor terminals again. Access the blower (using the appropriate Bentley repair manual), which is typically not difficult, and disconnect the two wires from the motor. When finished, remove the leads in reverse order: red first, then black. Mark down the reading on the multimeter, then compare it to the resistance reading the evaporator. Hold the two test rods on the multimeter to the motor terminals. This BROWN wire is the power source for the blower motor (fan). Check the ground in the relay with the multi meter on the Ohm scale. It sounds like the motor is getting voltage , so the next place to check is the resistors, which are located right above the blower motor. A more accurate way of checking circuits is to use a test meter which will indicate the level of voltage reaching the component and also check the resistance of the circuit or component. Here's a quick summary video to show you what has been described in the steps above. Then check in the relay socket for the 12v from the IGN -3 fuse. Touch one side of the fuses and then the other. Re: Calculating CFM for a Blower 11/07/2008 2:36 AM the thing is that we fabricate the blower, fan blades, etc all ourselves. I am not responsible. Relay is fine fuses are all fine, bypassed the blower motor works fine. Fasco D701 5. Nothing guarantees the eternal life of any product, but by following these 10 tips, you will understand some things to look for when planning your next oven purchase. Make sure the fuse 11C/26 is in good condition. Start with the simplest method, the caveman test and whop it a couple times with open palm with the switch turned to high. On three terminal relays, the case itself may serve as the ground connection. The best way to check for a internally corroded battery cable is to pull the wire and do an Ohm meter check however that is not usually possible or it is difficult to perform. - and does not turn free with the control disconnected, then the motor is damaged. If you don't hold it down securely, like in the jaws of a vice, and it turns out to be good, it will twist rather violently when it spins and possibly fall off the bench onto your big toe - could really ruin your weekend. This can also sometimes be confirmed by bumping the blower motor with the switches on. The MΩ symbol may appear in the display because the resistance of open (unattached) test leads is very high. Testing the blower motor is as simple as applying battery power and ground to the blower motor terminals. Measure the voltage across the motor leads. Drop Test Method: Give a DC Voltage across the commutator Segments for one pole pitch area from a Power supply or Battery. 6V DC with the car off and 13. If the connector is faulty, the motor with spin. How to test a blower motor capacitor with the multimeter? If you want to test a blower motor capacitor of yours, make sure that you discharge it with a screwdriver before you begin the test. Six … Remove the three screws. A weak reading could indicate a magnet that has lost some of its strength. TEST 1: Resistance Testing The Blower Motor Resistor We're gonna' test the continuity of the blower motor resistor with a multimeter in Ohms mode. It is normally open when the motor is idle/not running, and closes when motor runs. All of our catalog is available to you every hour of every day of the year. If you don’t have the correct voltage at either location, then the muthaboard is fried– was probably taken out by the evaporator fan motor getting moisture in it. Blower motor should operate. if it is good, locate the feed wire to the blower motor and check for voltage with a multimeter or voltmeter. Then blower motor quit on dec. The voltmeter will read the voltage. Basic motor testing with multimeters and ammeters July 1, 2015 By David Herres 10 Comments When an electric motor fails to start, runs intermittently, runs hot, or continually trips its overcurrent device, there my be a variety of causes. You could really simply substitute the blower motor by your self, it's not way too hard. Using a multimeter, test for continuity between the leads on the switch. Now it does not work at all. After removing the screws you have to kind of wiggle the plate out of there. Free Same Day Store Pickup. The blower resistor is located on the other side of the blower motor (on the firewall side) and it's held in with two screws. I am not aware of any test you can performed on this. 5 V with the engine running. how do i tell if it is a blower motor bad or resistor bad on 202 ford explorer xlt 7 Answers. It is actually mounted in the blower motor plenum. Locate and test your dryer's motor. Minimum test value of motor insulation resistance is 1 Meg Ohm (1 MΩ). Notice the giant yellow arrow pointing to the location. Free shipping US Orders +$99!. The electrical connector has 4 wires. DC Motor Armature Testing For a DC Motor Armature, There is a simple method of determining the condition of the Armature. Do you just want to verify the resistance or measure the voltage drop accross the resistance. It is a more comprehensive test, as it outlines the thermocouple's performance under load. The motor that runs the fan in the heating and air conditioning system in a car is called a blower motor. Look inside the housing for the blower fan. Check voltage to the appropriate terminals. Here's a pic of the resistors Which fan speed you choose determines which resistor gets "used" by the voltage coming from the relay. See how to measure insulation resistance of Electric Motor Running Amps Test With the motor running, check the full load amps (FLA) with a suitable meter or preferably a clamp on meter and compare with the name plate FLA. When that happens the relay can't develop a proper magnetic field and can't close the relay contacts. This is the ground control from the final stage. Now im at the point of testing the transistor make sure it is the fault. Power meter [Power meter] [Flow meter] Wire to Air Blower Package. It is responsible for controlling the blower motor's fan speed. Connect the probes to either end of the wiring connectors, the meter with show the resistance in the connection. How To Use a Multimeter to Test a Pool Pump Motor - Winding Resistance WRITTEN BY: Inyo Pools 4. Replace blower motor if internal problem is suspected. There are lots of battery-powered leaf blowers on the market. See how to measure insulation resistance of Electric Motor Running Amps Test With the motor running, check the full load amps (FLA) with a suitable meter or preferably a clamp on meter and compare with the name plate FLA. Its one of the lesser-used diagnostic tests, but perhaps if we focus on how to measure amp draw and learn to better interpret what it can tell us, we will expand our ability to provide comfort to those we serve. 6 Ways to Check a Capacitor by using DMM & AMM (AVO). Minimum test value for a good electric motor is at least 1MΩ Running Amps Test With the motor running, check the full load amps (FLA) with a suitable meter or preferably a clamp on meter and compare with the motor name plate FLA. via YouTube Capture. Testing the switch itself requires a multimeter. Take your multimeter and set it to ohms. If a motor fails to run properly when first installed, ALWAYS check the connection arrangement of the motor leads and the input power lines. The blower motor resistor is a $12 part that can be ordered on Amazon (CLICK HERE) and can be installed in about 15 minutes in any GM G-Body car from 82-87. Turn the voltage up slowly from zero, up to the motor's rated voltage. Inducer Motor and Blower: Why Your Furnace Needs One An inducer motor and blower assembly is definitely one of those parts you don’t think about until something has gone wrong with it. Having read all the past posts on this I have checked: duct and drain hole in woing - was full of 1 of muck and as hard as concrete but now all cleared electrical connections - seem fine, have cleaned and WD40d m. 1 Check the Coil on a Poulan TE450;. Try this: Meter both test points on the millivolt range, and read the voltage drop across the fuse. how to wire a 220V furnace blower motor User Name can vary by the motor. As an aside, a fan motor with bearings on the way out draws extra current and often causes the resistor to overheat, so if you replaced the resistor because it popped my money's on a worn fan. Testing your Civic Blower Motor Resistor Because the resistor is basically an adjustable power transistor, you can test the unit directly by measuring the pins for resistance. If the shaft (with blower wheel disconnected) is difficult to turn with the motor control attached: - and turns freely with the control disconnected, then the control is damaged. TEST 1: Resistance Testing The Blower Motor Resistor We're gonna' test the continuity of the blower motor resistor with a multimeter in Ohms mode. The windings should then be checked for resistance (ohms). The motor that runs the fan in the heating and air conditioning system in a car is called a blower motor. Check the reading to determine if the resistor is good. How To Properly Select a Fan or Blower Explanation or in metric equivalent, it is rated in Pascal's (Pa). 200mV) and connect any two of the motor leads in series with the resistor/bulb. The new blower has the plastic adapter and I had to trim some of the air box as the instructions said. If your vehicle has been running roughly or losing power, there may be a lack of pressure in one or more cylinders. Home / FAQs / How to test and troubleshoot gas furnace pressure switches. With an ammeter you could test the current draw with the blower motor on the HIGH position. Losing all speeds with good fuses & relay which then give you 12v power to the fan motor almost always means you are losing the ground & most always at the 3 wire connector at the back of the mode selector switch. 6 Ways to Check a Capacitor by using DMM & AMM (AVO). This module is connected to the CCM 3/112 and controled by it. Where is the blower motor located so you can determine which type you have? You will find this motor and the resistor inside your vehicle’s heating and air conditioning system. In order to access the motor, you will need to turn the dryer on its side. Protect yourself from electric shocks by wearing safety gear. Also, When verifying voltage, Use the power and ground wires to the blower motor. I have a piece of test equipment that will do full dynamic testing of capacitors that place full rated voltage across them and check for value, leakage, and ESR (resistance). A bad motor can sometimes stick, or feel like it's got a lot of friction. Checking the Continuity of the Resistors of the Resistor Assembly. This BROWN wire is the power source for the blower motor (fan). HOW TO TEST YOUR TRANSISTORS WITH YOUR MULTIMETERS: Hello everyone!! In this instructable I will be telling you how to test your transistors with the help of your multimeters. A relay that passes this test will probably be ok, but if you still suspect the relay you can easily verify finer electrical properties by continuing. It does take some time to check these. Use a test lamp or a multimeter on the blower motor connector. Testing voltage output requires working with electrical current. The blower motor is located below the glove box. Designed to be used with the EGO Commercial Backpack Battery BAX1500, this robust blower is light and easy to handle. If your motor run when connected directly then it would most likely be the power module. If you test power at the blower motor plug…and also notice that voltage responds to the switch (multi-meter time)…then you will know the switch is working properly. Access the blower (using the appropriate Bentley repair manual), which is typically not difficult, and disconnect the two wires from the motor. Check C to E, S to E, R to E. Multimeter Continuity Test How To : Test a breadboard using a multimeter If you want to start making a basic electronics project by placing power sources and such on a breadboard, you should make sure that the breadboard will work first. When I use the multi tool to test connections using the ground side I get ground on all the wires except the black one at the relay. Step 2: Locate the blower motor resistor under the dash of your vehicle. The blower motor should operate at high speed. There should be a variable control voltage coming from the HVAC control panel - the voltage goes up as you increase the fan speed on the control panel. If additional access is needed, remove the front passenger’s right side lower kick panel. If the module does not like the signal it receives in return it can discontinue power to ask the motor to run. The blower switch connects the resistors to ground to complete the circuit. After all, that would be the correct way to test the system after fuse replacement and verify it's operating properly. The white wire is called the run wire. DC motors draw power from deep cycle (DC) batteries. With an ohm meter I check continuity while spinning the squirrel cage by hand. If there is a battery voltage, the problem would be the blower motor. I've tested the blower motor to see if it works by itself, it does. Home / FAQs / How to test and troubleshoot gas furnace pressure switches. Ohm meter confirmed a bad blower motor. If this circuit is open, showing infinity on the Ohmmeter, the blower resistor must be replaced. Testing the blower motor resistor with a multimeter is a simple way to determine if. But even a well-maintained motor might stop working, and then it's time to know how to check for an open or a short. It very important device to made production smoothly. Take the black multimeter standard test lead and touch the white wire with it. Touch each of the meter's probes to one terminal each. The blower motor resistor can be easily tested with a set of simple multimeter resistance tests (especially since it's very accessible). If the circuits are in good repair but the blower motor keeps blowing fuses, replace the blower motor [source: You Fix Cars]. Blower does not blow at all, under any fan speed. It’s very easy on how to test a fuse. Blue wire does not seem to show anything when tested with the other wires. The Mercedes has a series of sensors that, working in concert with a computer, maintain a constant climate in response to the settings on the console. Replace the terminal block if it is faulty. Testing the blower motor switch to determine if it's still functioning requires that you remove the switch and use a multimeter to test its continuity. Turn off the power to the furnace by switching off the disconnect switch located near the furnace. The blower resistor is actually very simple to replace and only takes about five minutes and no dis-assembly is required! If you look under the glove box area you can see the blower motor. Six … Remove the three screws. Also, When verifying voltage, Use the power and ground wires to the blower motor. ~5 - 12V) there and the fan isn't blowing, it's dead. Does it mean that it is defective and need to be replaced. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. The inducer blower assembly consists of a small motor powered by electricity, a fan, an electrical box to allow connections, and a metal sleeve that surrounds. I've replaced both switches, the resistor, the relay, the fuse, and spliced female connectors onto the vaccine switch. If it runs and you're low voltage is making the call, it's likely the control board. How to check blower motor Assuming the presence of power and the thermostat operates - 1. The plug should also have a wire that's switched 12V from the blower relay. One needs to ensure that its working conditions are not hampered. You'll need to remove the resistor block to test it and once removed, you'll be able to inspect it for any heat/burn damage on it and its connector. Related Articles. Remove the fuse panel access cover which is located right near the shifter on the passengers side of the foot well. Here you can see the blower motor and the blower motor resistor. ) Check the number stamped on the belt and get an exact replacement from a home center or heating supply outlet. Do you have a test light? A volt/ohm meter? Looking at the blower resistor before you install it it creates a series of resistors. Fuse is Blown: If the meter reading does not change and display still shows the original 100% resistance state. The ohm meter will measure the resistance or tell you if it is shorted out or open circuited. The capacitor fails if the needle does not move or if the needle points at infinite and stays there. 8 liter equipped GM vehicle) you can test it on the car or you may have to remove it for ease of access. Locate the fuse for the blower motor in the owners/service manual. Rodents are notorious for building nests in heater boxes! If the wiring is good and the motor turns by hand, it may be worth testing the motor itself at your local NAPA AutoCare. Always test your test equipment for proper operation before use. I am not responsible. The user chooses a suitable fan speed by using a selector to connect one of the resistors in the blower resistor pack. 1 Check the Coil on a Poulan TE450;. If you find one, replace it. There are other testing methods other than resistance that can be used. The blower itself spins freely, has continuity and spins when I hooked up a 9v battery to it. I suggest anyone having this problem to do the test first. 0L Explorer, Ranger, Mountaineer, B4000. if blower turns with test replace the module. Replacing The Blower Motor. It was blowing the #3 16 amp and #9 8 amp fuses simultaneously. Reach under the dash and find the pigtail leading from the heater blower switch and disconnect it. If it still doesn’t work after I replace the Mosfet and thermal cutoff then I will try the test in the web site. Both the high and medium give adequate CFM for the HVAC system. Test the new fan motor, before replacing the AC shroud, to check for proper alignment and fan clearance. Where is the blower motor located so you can determine which type you have? You will find this motor and the resistor inside your vehicle’s heating and air conditioning system. If a motor fails to run properly when first installed, ALWAYS check the connection arrangement of the motor leads and the input power lines. Home / FAQs / How to test and troubleshoot gas furnace pressure switches. The blower motor resistor is usually mounted near the blower motor in the HVAC housing with only the connector visible. The white wire is called the run wire. You are doing should observe instructions and also have a lot of patience however. Here's some photos of the job:. Try this: Meter both test points on the millivolt range, and read the voltage drop across the fuse. The range can be adjusted if necessary. Did you check with a meter at the connector on the blower motor to see if you have 12 volts there? Did you look inside of the black box at SP106 to see if you have a burned ground wire there? Did you run the ground test by looking at the yellow light inside the AC button? You start the car turn on the fan to #4 with the AC button pressed. Is that normal? Half of the pads on one side of a the pad circle seem connected to each other. How do you replace a blower motor resistor? How do I can generate 10 volts if when I tested the motor with a high speed drill I can get just 1 volt? How can I operate a 220 volt motor on 72 volts?. The problem with these static tests is that you are only using the low DC voltage of the meter to test the capacitor while in actual use, they will have 120vac across them. Follow along to master the three most basic functions of a multimeter. You'll notice that 1 of the 2 wires that comes out of the blower motor connector is purple (PPL) and the other is black (BLK). When finished, remove the leads in reverse order: red first, then black. About a week ago we had a power outage and later in the week when we tried to turn the. How To: Test a car starter using an amp meter How To: Troubleshoot a heater blower motor How To: Test a vehicle alternator with a standard multimeter How To: Play WoW on your iPod on Household Hacker How To: Brew beer at home using common household items. In this reading. Blower motor should operate. Start with the simplest method, the caveman test and whop it a couple times with open palm with the switch turned to high. Best Answer: Test the insulation with a megger (Sometimes a fault can be detected with a multimeter but don't rely on it). Touch one side of the fuses and then the other. Black and brown have some resistance figure. Relay is fine fuses are all fine, bypassed the blower motor works fine. See how the motor behaves. Note the reading on the screen. Now switch the multimeter to its lowest voltage range (eg. How do i test a ac blower motor relay - Answered by a verified Dodge Mechanic We use cookies to give you the best possible experience on our website. Make a foam party or a confetti cannon to excite your guests. The blower motor resistor is an electrical component that is a part of the vehicle's heating and air conditioning system. Fuse is Blown: If the meter reading does not change and display still shows the original 100% resistance state. To determine if the condenser motor is working, use a multimeter to test the incoming voltage to the motor. works like new. Resistors present a resistance, or impedance, to the electrical circuit and reduce the amount of current that is allowed to flow. If the drive motor fails, the drum or blower wheel might struggle to rotate, or the drum may not turn at all. To test a single-phase motor, first remove the cover of the motor's wire, and disconnect the wires. Everyone likes to gardening fast and with no effort. 6 is next to nothing and acceptable so the wire is okay. Test the first set of wires: Now is the time to test the white - brown and white wires. Is the fact that i'm getting power to the motor enough to let me rule out the module?. A more accurate way of checking circuits is to use a test meter which will indicate the level of voltage reaching the component and also check the resistance of the circuit or component. Press the screwdriver against the terminals and the capacitor will discharge. As a result, the motor turn. via YouTube Capture. It does take some time to check these. If the blower motor is not working and no air is being blown through the unit it will overheat and the high limit switch will turn the gas off. first take your test light and hook it to your battery make sure it works. The motor is dead: A test to see if motor is any good, hook up a test cord to terminals 4 & 5 on the motor, plug into a 120 volt outlet to see if the motor will run. Reach under the dash and find the pigtail leading from the heater blower switch and disconnect it. The only 12v is directly from the relay to the motor. The blower motor resistor can be easily tested with a set of simple multimeter resistance tests (especially since it's very accessible). Testing the blower motor switch to determine if it's still functioning requires that you remove the switch and use a multimeter to test its continuity. It is a more comprehensive test, as it outlines the thermocouple's performance under load.