There are many elements that could trigger the fan: Coolant temperature sensor, temperature switch,…. How To Reset Check Engine Light: Follow These 4 Easy Ways! Touch the metal parts of your terminals together to make sure it works. Here's a quick and easy test! 0.00v-0.01v. You should have a reading of approximately 2000 ohms. However, when there is a failure in cooling fan motors, the temperature will continue to rise, leading to engine overheating. On a functional fan clutch, the fan blades will all be lined up neatly inside the housing, which should sit upright with an equal amount of space between the radiator and engine. Touch and continue touching the white – brown wire with the red multimeter probe. Step 2 Place the thermometer in the sauce pan so you can read it as the temperature increases. On the other hand, vehicle overheating can be caused by various factors, so it is recommended to have your vehicle carefully diagnosed. Always visually check the capacitor before you start testing because ruptured capacitors and capacitors with dents or any other types of deformities are obviously broken and you need to replace them as soon as possible. If the fan shows any problem or stops working, you can use a multimeter to check if it has the correct voltage and its motors are working. You can also refer t… How to Test the Capacitor Using Analog Multimeter. It means the fuse does not have any power, which is only possible if the black probe is not properly connected to the negative terminal of the battery or grounded to a metal part. SEE MORE. There is a sensor on the bottom passenger side of the radiator. Connect the black lead of the meter to the body of the cold sensor and the red to the terminal. It goes without saying that everything is probably fine with the fan motor if you detect such a capacitor. Any value between and around thirty-two to forty ohms should be considered as standard value. It means the fuse is working fine and you can just move on to check the next one. Touch the robe to another contact and take the reading. How To Clean A Carburetor Without Removing It, How to Remove Clear Coat From a Car: Fool-Proof Process, How to Find Factory Options With a VIN Number, Things To Avoid While Driving An Automatic, Best Tire Pressure Monitoring System Reviews. Take your multimeter and place the negative (black) multimeter probe on the brown wire. If you have a new sensor on hand and want to check it, you can do this easy test. This guide will hopefully make testing fan motors for you easy, regardless of your experience level or type of fan motor that you are testing. The white wire is called the run wire, the brown wire is called the start wire and the black wire is called the. Connect one end of the volt meter to a ground and the other end to the electrical connection on the fan. Start and idle the engine, and backprobe the connector terminals with the test light. Test both the white and the white-brown wires. This is the sign of a blown fuse. Set the multi-meter to the resistance setting with an appropriate measuring scale selected. If your freezer isn’t as cold as it should be, there might be a problem with your evaporator fan motor. 2. This part can sense radiator heat in order to trigger or turn off the cooling fan. Along with that, car owners might need to pay 200$ for the labor involved. The cost of a radiator fan is not as expensive as many drivers think: Around $300 to $450 is the price that most automobile manufacturers and car stores have. Refer to the top or side of the relay to locate these terminals. Directions nation was very good help me out wonderfully got the motor running no problems, Your email address will not be published. 4. This fan, having four to eight blades, rotates quickly to send cooler air to the engine. Last but not least, a bad radiator fan is a stop working cooling fan. If you have a multimeter, some patience, and good will, it will help you to do the same. We will test the wires according to their functions. Check our article to know how to test radiator fan with multimeter. Is your car breaking down frequently? Do you know, There is a sensor on the bottom passenger side of the radiator. So in order to how to check if radiator fan is working, you have to check the voltage of a few fuses in the under-dash fuse box (number 3, 15, and 20) and under-hood fuse box (number 47 and 50). Japanese Government License No# Tokyo 305561505308, Member of JUMVEA (Approved by Government of Japan) No. Tsukasa’s blog is one of the best resources for information about keeping your favorite imported car running smoothly. Tsukasa Azuma is an awesome car blogger of Car From Japan. Do you know how to test radiator fan with multimeter? 6. So, Easy Peasy! It does the job of taking notes of coolant temperature. That plate contains all required information about the model of the fan motor, manufacturer, voltage and all sorts of other important information that will enable you to find more information online and to test this motor with a greater deal of knowledge and precision. It sends signals to the radiator fan to turn on when the temperature crosses 172°F. There must be a problem with the fan if it does not spin when it should and spins when it should not. In either case, you can, If the radiator fan is not running, you have to check its fuses to find out if the problem is with the fan itself or other components in the system. Connect your test light to battery ground. . Marty Conley on February 06, 2018: I have been having a problem with the temp gauge in my 99 chevy pu. The most common problem on these relays is an open or shorted coil … Here’s how to test radiator fan with multimeter by checking the fuses. 000569, Member of Tokyo Chamber of Commerce Boueki - 201650, The main function of a radiator fan is to prevent the engine from overheating. Usually, a poor performance cooling fan is very easy to spot. Use a multimeter to check the electrical resistance of the motor. It works as a part of the overall cooling system. There must be a problem with the fan if it does not spin when it should and spins when it should not. Touch the red probe to any of the two contacts and take the reading. fan motors can be designed for several different purposes. Moreover, because of being passionate to learn about the recent happenings in auto industry, he doesn’t only provide great car maintenance tips, he also always updates latest trends in among car brands and share them in his own interesting viewpoint. If the number on the multimeter is less than 1, then your multimeter is functioning correctly. Is the cooling fan motor working on your vehicle? Troubleshooting Remote Key Won’t Unlock Car Door. A relay is used to control (switch) a high amperage electrical circuit with a low … How to test cooling fan with this tool? Rev the engine to 2,000 rpm and place the negative probe on the negative battery terminal. Radiator fan is created in order of cooling and air conditioning once a certain temperature is reached. It reads normal for about 15 to 20 min. Locate the door switch that’s pressed when the door is … Check the warm sensor in your engine. Rev the engine to 2,000 rpm and place the negative probe on the negative battery terminal. He owns a car repair shop at downtown Osaka, and he put all that experience to good use in his sharing posts. No need to worry about recording the precise voltage reading because it varies due to several factors including the alternator output and the charge in the battery. Locate the fuse you want to test. Check our article to know how to test radiator fan with multimeter. While using this multimeter to test capacitors, you … Besides the obvious safety reasons related to electricity and possibility of injury, if the blade is spinning while you are trying to measure, the values will become erratic and it will be impossible for you to get precise readings. How do I know if the radiator fan is bad? Fan motors usually have two wires; brown and white – brown wires that are plugged into the capacitor. Your email address will not be published. It can sometimes be very confusing to test fan motors for people who don’t have much experience. Now, what do the readings mean? Kick off the engine or switch the ignition key off to IG2. The value should be around 12 volts. Remove the radiator cap and start the engine. Make up some jumper cables; connect them directly from the battery to the fan motor to see if it spins. The advice mentioned here applies to every four-wire configuration fan motor, regardless of fan motor size. To test the continuity setting’s calibration, touch the 2 terminals together and hold them in place. You should put the red probe on the white wire. CASE 1: Your multimeter showed continuity.This test result tells you that the radiator fan relay is good. As you probably know, fan motors can be designed for several different purposes. ... To test the evaporator fan motor in your freezer, open the door and feel for cold air. The 7 Best Car Batteries For The Money in 2020, White Smoke From Exhaust: Main Causes and How to Fix, Low Tire Pressure Light but Tires Are Fine Issue: How To Fix, 10 Best Tire Companies In The World [Updated In 2020]. Take the black multimeter standard test lead and touch the white wire with it. Easy Peasy! Replace it and you are back on the road. It means the fuse does not have any power, which is only possible if the black probe is not properly connected to the negative terminal of the battery or grounded to a metal part. Just keep in mind that many modern cars use electronic relays. So how to check radiator fan? Detach the probe and then reconnect again to take readings. Second of all, automobile overheating is another sign of the radiator fan’s problem. In either case, you can detect the issues by using a multimeter. The fan should also turn on after switching on the air conditioner. You will now place the red probe on the common wire. Other two wires are black and white and they are to be plugged into the capacitor. 4. If necessary, a replacement relay costs around $20.There are three ways to check for a bad terminal. Remove the radiator cap and start the engine. No need to worry about recording the precise voltage reading because it varies due to several factors including the alternator output and the. Now … The white wire is called the run wire. If you are still unable to locate or identify a part necessary for testing described here, make sure to check out the metallic plate on the fan motor. The Best TOAD Vehicles for Frequent Campers. Checking the operation of a fan relay on your vehicle is an easy procedure. Here’s How to Troubleshoot. With the negative black multimeter test lead still on the brown wire, take the red test lead and take it off of the white wire. I would, however, proceed with the tests just to make sure that there isn’t something wrong with the fan motor because, if it is, it could make the new capacitor break down. 3. Since radiator fan is an essential part in automobile, our car experts have answered all the concerned questions around this subject: 1. The top cause of fan motor ‘breakdowns’ is a bad run capacitor. It sends signals to the radiator fan to turn on when the temperature crosses 172°F. Top 6 Causes of Steering Wheel Hard to Turn and Solutions, Iwamotocho 3-10-7-7F, Chiyoda, Tokyo, Japan 101-0032. When the engine reaches operating temperature, insert the positive probe directly into the coolant. ... grand cherokee cooling fan scannerdanner forum bmw auxiliary cooling fan testing and diagnosing how to part 3 how to test the radiator fan relay honda 2 2l 3l part 3 radiator fan relay test 2001 2005 1 7l honda civic. So if this component surges, the fuse will be blown for the sake of the engine: Electrical surges will damage the whole system if the fuse transfers them completely to the system. The simple method to fix this problem is to replace the fuse in order to restore functionality of the fans. Most common of these are single phase motors. The value should be around 12 volts. The fan should also turn on after switching on the air conditioner. 12V on both contacts. If your fan motor differs in any way to the configuration described here make sure to get the manual and check it for details. The main function of a radiator fan is to prevent the engine from overheating. CASE 1: Your multimeter showed continuity.This test result tells you that the radiator fan relay is good. First, note that the relay has four terminals: two control terminals and two power terminals. Checked my fuses and they all seem fine. disconnected the fans and connected my multimeter and started the car, revved it for a while so it was upto temp and looked at the multimeter and its got nothing. To check an electric radiator fan, start the car and let it get up to the temperature where the fan normally kicks on. Touch the robe to another contact and take the reading. Values measured in this phase of testing should be around fifteen ohms. Bypassing the radiator fan switch. So, regularly check the radiator fan with a multimeter. It distributes cooler air through the radiator and exchanges the engine heat. If the reading is a flat 0, that’s fine too. Detach the probe and then reconnect again to take readings. Now is there a way to hook the fans up so they go constantly just to check the fans arent dead or … Car owners understand the importance of cooling fan motors since it keeps the automobile at the right temperature, especially when idling and at low speeds. How do you test a radiator using a multimeter? 1. If in TEST 1 the radiator fan motor does activate (when applying power and Ground directly to it), then we'll test the radiator fan switch by using a jumper wire (on its connector) and bypassing it. Wait for the engine to reach operating temperature. To trigger or turn off the cooling fans, cooler Master towers usually! Release air blogger of car from Japan is blown and spins when it should not car have! 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