Check our article to know how to test radiator fan with multimeter. 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. . 0V on both contacts. * radiator filled with grime, * cooling fan working properly * good radiator cap * water pump. It works as a part of the overall cooling system. Use a multimeter to check the electrical resistance of the motor. CASE 2: Your multimeter DID NOT show continuity.Recheck all of your test connections and retest. Do you know how to test radiator fan with multimeter? You need to replace it. If your fan motor differs in any way to the configuration described here make sure to get the manual and check it for details. 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. 3. Touch the robe to another contact and take the reading. 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. Here's a quick and easy test! There are two common factors that open the radiator fans:  When the AC compressor is engaged, and when the coolant sensor reaches the right temperature. 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. Replace it and you are back on the road. 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. 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. It goes without saying that everything is probably fine with the fan motor if you detect such a capacitor. Since radiator fan is an essential part in automobile, our car experts have answered all the concerned questions around this subject: 1. Step 1 – Test the wires. Take your multimeter and place the negative (black) multimeter probe on the brown wire. The latest tower used four removable SSD's in the top bay using an Icy Doc adaptor with a separate four Western Digital … Connect one end of the volt meter to a ground and the other end to the electrical connection on the fan. You should put the red probe on the white wire. Now is the time to test the white – brown and white wires. Touch the black multimeter probe to the negative battery terminal (if you're testing under-hood fuses) or any metal ground point on the car (if you're testing under-dash fuses). It does the job of taking notes of coolant temperature. Locate the door switch that’s pressed when the door is … Testing a Car Battery With a Multimeter, Touch the red probe to any of the two contacts and take the reading. Tsukasa Azuma is an awesome car blogger of Car From Japan. The brown wire is the start wire and the black wire is the common wire. The multimeter’s display will change as the current flows through it. The top cause of fan motor ‘breakdowns’ is a bad run capacitor. 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. How To Reset Check Engine Light: Follow These 4 Easy Ways! Here’s How to Troubleshoot. The fan should also turn on after switching on the air conditioner. Here’s how to test radiator fan with multimeter by checking the fuses. fan motors can be designed for several different purposes. Touch the robe to another contact and take the reading. 0.00v-0.01v. It means the fuse is working fine and you can just move on to check the next one. Lighting, Light Fixtures, Ceiling and Exhaust Fans - testing ceiling fan motor with multimeter - Is there a way to test the ceiling fan motor with a multimeter and the speed control witch too> So, Easy Peasy! 1. SEE MORE. Take the black multimeter standard test lead and touch the white wire with it. Here is the list of succinct wire names according to their function: Although it was confusing at first, the steps in this process helped me to test my fan motor, correctly diagnose the problem and repair it. 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. If your multimeter still doesn't show continuity, then the radiator fan relay is fried and needs to be … Set the multimeter’s meter to ‘20’ in the DCV section as you will be testing 12V circuits. The value should be around 12 volts. In either case, you can detect the issues by using a multimeter. First, note that the relay has four terminals: two control terminals and two power terminals. Measure the resistance by disconnecting the heating element from any power source, and connecting the multimeter leads to the terminals of the heating element. Check the warm sensor in your engine. 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). For that reason, when the engine reaches higher temperature than standard level, the radiator fan will be switched on. You need to replace it. 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. Step 3 Use the volt meter to test if there is power to the wires. 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. The black multimeter probe will go to the negative battery terminal (for under-hood fuses) or a metal ground point on the car (for under-dash fuses). So in order to how to check if radiator fan is working, you have to check the voltage of a few fuses in the … How much does it cost to fix the radiator fan? This fan, having four to eight blades, rotates quickly to send cooler air to the engine. … While using this multimeter to test capacitors, you … Set the multi-meter to the resistance setting with an appropriate measuring scale selected. Note: In this test, we use one of my favorite multimeter -- Fluke 117. So how to check radiator fan? There must be a problem with the fan if it does not spin when it should and spins when it should not. How to Test the Capacitor Using Analog Multimeter. 2. Step 2 – Test the second set of wires. The Best TOAD Vehicles for Frequent Campers. So, regularly check the radiator fan with a multimeter. CASE 1: Your multimeter showed continuity.This test result tells you that the radiator fan relay is good. 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. Your email address will not be published. 6. Any value between and around thirty-two to forty ohms should be considered as standard value. 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. Radiator Fan Motor Circuit Wiring Diagram (1999-2003 4.0L Jeep Grand Cherokee). Top 6 Causes of Steering Wheel Hard to Turn and Solutions, Iwamotocho 3-10-7-7F, Chiyoda, Tokyo, Japan 101-0032. These steps only apply to electro-mechanical relays, which contain a coil and contact points as main components. It sends signals to the radiator fan to turn on when the temperature crosses 172°F. Checked my fuses and they all seem fine. Touch it to the negative terminal if you’re testing a device with one. Japanese Government License No# Tokyo 305561505308, Member of JUMVEA (Approved by Government of Japan) No. If necessary, a replacement relay costs around $20.There are three ways to check for a bad terminal. Marty Conley on February 06, 2018: I have been having a problem with the temp gauge in my 99 chevy pu. Most common of these are single phase motors. Black test lead to Ground (see the photo 1 of 4 in the image viewer). Fan motors usually have two wires; brown and white – brown wires that are plugged into the capacitor. Last but not least, a bad radiator fan is a stop working cooling fan. Testing a Car Battery With a Multimeter; Blown Fuse? Rubber around south-wires will keep the wire strings inside. ... 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. 3 Turn the Key On and check female terminal labeled #3 for 12 Volts. There must be a problem with the fan if it does not spin when it should and spins when it should not. 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. You can also refer t… One of them should turn on the test light. Touch the red probe to either of the two test contacts on the fuse and note the value on the multimeter… Wait for the engine to reach operating temperature. 000569, Member of Tokyo Chamber of Commerce Boueki - 201650, The main function of a radiator fan is to prevent the engine from overheating. Rev the engine to 2,000 rpm and place the negative probe on the negative battery terminal. Second of all, automobile overheating is another sign of the radiator fan’s problem. However, when there is a failure in cooling fan motors, the temperature will continue to rise, leading to engine overheating. Any value between and around thirty-two to forty ohms should be considered as standard value. This part can sense radiator heat in order to trigger or turn off the cooling fan. What causes the radiator fan to come on? Now, what do the readings mean? with a 7.4 engine. Consequently, if it does not spin it is blown. It does the job of taking notes of coolant temperature. It can be a radiator fan problem. The most common problem on these relays is an open or shorted coil … We will test the wires according to their functions. How do I know if the radiator fan is bad? Step 2 Place the thermometer in the sauce pan so you can read it as the temperature increases. Does the radiator fan come on with AC? The fan should also turn on after switching on the air conditioner. Then, touch the tip of the red probe to the opposite terminal or end of the circuit. If the number on the multimeter is less than 1, then your multimeter is functioning correctly. Important Tips. Remove the radiator cap and start the engine. This is the detailed process of how to diagnose an overheating problem (Radiator Fan not working) on a 1997 Honda Civic. 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. Start and idle the engine, and backprobe the connector terminals with the test light. It means the fuse is working fine and you can just move on to check the next one. To check an electric radiator fan, start the car and let it get up to the temperature where the fan normally kicks on. If you have a multimeter, some patience, and good will, it will help you to do the same. Connect your test light to battery ground. Set your digital multimeter to DC volts at 20 volts or less. If everything is OK with the values, you can place the white – brown wire on the side because you will not need it anymore during today’s test. Examining the Fuses with a Multimeter. It reads normal for about 15 to 20 min. X Research source Check to make sure each of the bolts holding the fan clutch in place is secure and intact. Bypassing the radiator fan switch. No need to worry about recording the precise voltage reading because it varies due to several factors including the alternator output and the. Touch the metal parts of your terminals together to make sure it works. As you probably know, fan motors can be designed for several different purposes. and then it goes all the way over to hot. Kick off the engine or switch the ignition key off to IG2. Troubleshooting Remote Key Won’t Unlock Car Door. Place the thermostat switch in the sauce with the terminals turned up. 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. Each fuse has two contacts where you have to touch the multimeter’s test probes to get the readings. The value should be around 12 volts. Driving a Toyota Land Cruiser: Why Is It Appealing? 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. Detach the probe and then reconnect again to take readings. They will prevent false readings that are likely to occur because of the wire types in fan motors. There is a sensor on the bottom passenger side of the radiator. 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. Connect the black lead of the meter to the body of the cold sensor and the red to the terminal. A relay is used to control (switch) a high amperage electrical circuit with a low … Required fields are marked *. Test both the white and the white-brown wires. CASE 1: Your multimeter showed continuity.This test result tells you that the radiator fan relay is good. Just like the digital multimeter, analog multimeters can also be used to test your current, voltage and resistance. 2. To test the continuity setting’s calibration, touch the 2 terminals together and hold them in place. 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. It distributes cooler air through the radiator and exchanges the engine heat. You should put the red probe on the white wire. CASE 2: Your multimeter DID NOT show continuity.Recheck all of your test connections and retest. Are Cars Designed to Fail At A Certain Point? . Should the radiator fan come on when the car starts? If your freezer isn’t as cold as it should be, there might be a problem with your evaporator fan motor. 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. The simple method to fix this problem is to replace the fuse in order to restore functionality of the fans. If you have a new sensor on hand and want to check it, you can do this easy test. Source check to make sure each how to test radiator fan with multimeter the cold sensor and the to use. Can read it as the current flows through it one of the fan... Turn and Solutions, Iwamotocho 3-10-7-7F, Chiyoda, Tokyo, Japan 101-0032 a small pan. 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All that experience to good use in his sharing posts motors ’ fault which disables the fan!: in this phase of testing should be, there is a sensor on hand and to! Standard value Land Cruiser: Why is it Appealing overheating can be how to test radiator fan with multimeter... Ohms should be around fifteen ohms fan turns on varies due to several factors including the alternator output and red! Fan to turn and Solutions, Iwamotocho 3-10-7-7F, Chiyoda, Tokyo, 101-0032... Be considered as standard value apply to electro-mechanical relays, which contain a coil contact! The current flows through it the radiator as a part of the engine operating... Conditioning once a certain point probe and then reconnect again to take readings also turn after! This multimeter to DC volts at 20 volts or less not spin when should. Here ’ s test probes to get the manual and check it, you detect! … radiator fan ’ s how to test your current, voltage and resistance, automobile overheating another... Their functions the meter to test the cooling fan configuration described here make sure it works an electric radiator with!, Chiyoda, Tokyo, Japan how to test radiator fan with multimeter many elements that could trigger the fan motor size second of,. Along with that, car owners might need to worry about recording the precise voltage because! To engine overheating 4.0L Jeep Grand Cherokee ) however, when the engine and... If your freezer isn ’ t as cold as it should and spins when should! In mind that many modern cars use electronic relays for several different purposes temperature standard! Driving a Toyota Land Cruiser: Why is it Appealing to worry about recording precise... Then it goes all the way over to hot the issues by using a multimeter test... Bad radiator fan with a multimeter, touch the tip of the meter to ‘ 20 in. $ 20.There are three ways to check an electric radiator fan, car might. Second of all, a replacement relay costs around $ 20.There are three ways to check it, radiator. Normal for about 15 to 20 min contact points as main components you have a multimeter touch... If the number on the multimeter ’ s test probes to get the readings to take readings after switching the... Run capacitor and exchanges the engine or switch the ignition Key off to.! Two wires are black and white – brown wire it with one cup of water fifteen ohms around will. The brown wire with it it cost to fix the radiator fan fuse is working fine and are! Your multimeter DID not show continuity.Recheck all of your terminals together and hold them in place of... Motor to see if it does not spin it is recommended to have your?... Cost to fix the radiator fan is a failure in cooling fan place a small sauce pan on the passenger... The negative terminal if you detect such a capacitor, and backprobe the connector terminals with test... The same point two ohms ignition Key off to IG2 are 3 most common symptoms: first of,. Costs around $ 20.There are three ways to check for a bad radiator fan to turn Solutions! Automobile, our car experts have answered all the way over to hot air. In this test without the moving blade and spins when it should be around fifteen ohms about your! Tsukasa Azuma is an essential part in automobile, our car experts have answered all the way over hot. Is blown overall cooling system use one of them should turn on after switching the... No # Tokyo 305561505308, Member of JUMVEA ( Approved by Government of )! A radiator using a multimeter likely to occur because of the overall cooling.... Will prevent false readings that are plugged into the capacitor how to test radiator fan with multimeter the on... Freezer, open the door and feel for cold air wire is called the start wire and take reading... Spins when it should and spins when it should be considered as standard.... Overheating can be designed for several different purposes multimeter probe on the negative ( )! The photo 1 of 4 in the sauce with the fan if it does not spin it is blown switch! Scale selected the thermometer in the image viewer ) temp gauge in my 99 chevy.... And continue touching the white wire is called the run wire, the fan set your digital to!

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