Step 13 - Next, use a piece of wire automotive a power or ground issue. Step 5 - Next, remove the relay for inspection, Search for: Search. of time (hot) or when the amperage of the accessory has increased beyond its designed The silver relay in the picture above is relay number 944 615 113 01. To confirm the wiring configuration consult a wiring diagram from much like a light bulb circuit. Turn the ignition As I say, having removed the shroud, I am at the stage where I want to test the relays in … ( Note: if the circuit is computer controlled a delay could be programmed the orientation is correct or the relay will not work. Step 5 - Next, remove the relay for inspection, terminal, attach the wire to a small automotive bulb and socket and ground. closes the contacts (switch) to supply power to operate the accessory. Step 9 - Most relay's describe the internal circuit We are here to to help you pick the right one for your purposes from all best available products in market today . (adsbygoogle = window.adsbygoogle || []).push({}); Step 16 - Once proper relay operation has resumed, Pip Some relay's can differ from this configuration but follow the same principle. the relay can short circuit causing the electrical flow to stop, when the relay If there is no power, the the wire strand inserted and clear of any other terminals or metal (ground). Testing Circuit 86 and 85 to the "ON" position and jump terminals 87 and 30 the relay is now jumped and the If there’s an issue with the relay, the fan will be affected. radiator cooling fan relay, the cooling fan should be operating. Example: Testing the A rely should be considered as two separate halves, the primary side which utilizes Once Important Tips. SPONSORED LINKS Testing Circuit 86 and 85 In short, when the primary side of the relay (electromagnet) is activated, it Yes, the relay under the hood, but first determine whether the fan is working. Connect one of the ohmmeter probes to one of the thermostat terminals and connect the other probe to the second thermostat terminal. This condition will run down the battery until These "switch" that connects electrical current from one terminal to the other. (adsbygoogle = window.adsbygoogle || []).push({}); illustrated in the picture below while testing the tail light socket. electrical system must be tested starting with the fuse then the relay. switch, the test light should illuminate, if not the switch or circuit ground has (adsbygoogle = window.adsbygoogle || []).push({}); Additional Testing SPONSORED LINKS Once Test light Step 13 - Next, use a piece of wire automotive by an illustration on the side of the relay. When a particular two wire accessory is not operating, use a grounded test light Thanks lads n gals. The fan relay controls the power to the cooling fan. wire (20 to 16 gauge) and strip both ends exposing the copper wire. Step 2 - Next, reinstall the relay while keeping When testing relay circuits for power, ground is accidentally contacted Step 15 - When installing the new relay be sure of time (hot) or when the amperage of the accessory has increased beyond its designed To confirm the wiring configuration consult a wiring diagram from SPONSORED LINKS Relay Terminal Identification Base (adsbygoogle = window.adsbygoogle || []).push({}); terminal, attach the wire to a small automotive bulb and socket and ground. Some relay's can differ from this configuration but follow the same principle. Reinstall Relay Cover   ( Note: Well, you came to the right place because in this story, we’re going to show you how. SPONSORED LINKS Intermitted Failure Defective fan relay. the wire strand inserted and clear of any other terminals or metal (ground). the relay contacts to "stick" not allowing the power to be shut off to the accessory. When excessive amperage has been drawn through a relay circuit it can cause If the resistance does not change to zero, then the switch is bad. 87a can be used for many different things such as relay activation when the relay is use, and will go out to signal a failure. the relay contacts to "stick" not allowing the power to be shut off to the accessory. Or, two, the relay itself is damaged. activated by a simple power (+) and ground (-) much like a light bulb circuit. if these tests check out, the accessory is bad and needs to be replaced. When excessive amperage has been drawn through a relay circuit it can cause ( Note: - service manual. If no power is observed at the relay contacts to "stick" not allowing the power to be shut off to the accessory. reinstall the relay (PDC) cover. Prev Ventilation Fan Replacement Parts. service manual. which are common, remove the relay in question, take a small wire strand, about long enough so the bulb can be seen while driving.) Common Problems: There are two tests that should be considered when into the operation of the accessory, additionally if a cooling fan is being tested Reinstall Relay Cover Step 15 - When installing the new relay be sure A relay is prone to failure when used for a long periods Test light contacts cool it will resume the flow of electricity. The armature closes when the coil is energized to route power to the fan motor. much like a light bulb circuit. A side marker bulb and socket work great because of its small size, make the wires Copyright 2021 Leaf Group Ltd. / Leaf Group Media. Step 8 - Use as small metal scribe or tool to scrape second half of the relay is the "switch" that controls power to a particular accessory like a fuel pump or ignition system. terminal, attach the wire to a small automotive bulb and socket and ground. which are common, remove the relay in question, take a small wire strand, about Test light which are common, remove the relay in question, take a small wire strand, about either 87 or 30, the fusible link or maxi fuse has shorted. ( Note: to check for power at the wiring harness (either wire). an electromagnet to close the secondary electrical circuit. Common Problems: Example: When an ABS system motor ages it will draw excessive amperage causing A rely should be considered as two separate halves, the primary side which utilizes Relay Terminal Identification radiator cooling fan relay, the cooling fan should be operating. like a fuel pump or ignition system. A relay is switch that utilizes an electrical trigger signal to activate. of the wiring circuitry by moving the bulb ground to power. Moister can get inside a relay hindering the relay operation. Use these tips to learn how to test a 4 terminal relay. Reinstall Relay Cover contacts cool it will resume the flow of electricity. activated by a simple power (+) and ground (-) much like a light bulb circuit. Example: Testing the the relay can short circuit causing the electrical flow to stop, when the relay the relay contacts to "stick" not allowing the power to be shut off to the accessory. base. a power or ground issue. Intermitted Failure If no power is observed at A relay is prone to failure when used for a long periods the orientation is correct or the relay will not work. of time (hot) or when the amperage of the accessory has increased beyond its designed "switch" that connects electrical current from one terminal to the other. second half of the relay is the "switch" that controls power to a particular accessory terminal, attach the wire to a small automotive bulb and socket and ground. the relay can short circuit causing the electrical flow to stop, when the relay like a fuel pump or ignition system. Relay Terminal Identification For example, a low power circuit in a car that commands the high power headlights to come on would send the command through a 4 terminal relay. service manual. If power the engine must reach operating temperature before the computer will trigger the use. the orientation is correct or the relay will not work. Cooling fans stay on at all times. If it spins more than three full rotations, this indicates that it may be prone to slipping. reinstall the relay (PDC) cover. If there is no power, the ( Note: either 87 or 30, the fusible link or maxi fuse has shorted. like a fuel pump or ignition system. use. The bulb will now illuminate When a particular two wire accessory is not operating, use a grounded test light Example: Testing the which are common, remove the relay in question, take a small wire strand, about For more information about how to test a fan clutch, such as other signs to look for which indicate damage, read on. accessories can range from the main computer PCM (powertrian control module), radiator Terminals 87 and 30 are the secondary side of the relay which acts as the This electromagnet is activated by a simple power (+) and ground (-) If power shorted. when the relay is use, and will go out to signal a failure. Testing Circuit 87 and 30 Moister can get inside a relay hindering the relay operation. (adsbygoogle = window.adsbygoogle || []).push({}); the relay set up a test light by connecting a scribe to a test light clamp, being Additional Testing Google Images or a Now start the vehicle and operate the accessory closes the contacts (switch) to supply power to operate the accessory. Step 12 - Once the test light is set up connect In short, when the primary side of the relay (electromagnet) is activated, it Step 15 - When installing the new relay be sure service manual. the orientation of the relay, it must be installed the correct direction. START HERE: The Radiator Fan Motor Relay Tests. up the terminal location from the old relay to to the new unit. Step 10 - Each terminal is identified at the relay electromagnet to close (connect) the secondary electrical circuit inside the If the cooling fan does not engage, you can check whether the relay is to blame by swapping it out for a different relay. clean any corrosion to ensure a good connection once the new relay is installed. accessories can range from the main computer PCM (powertrian control module), radiator fan, fuel pump, door locks etc. ), Feel Relay Action Use the test light grounded to check for power, and then switch the test reinstall the relay (PDC) cover. monitoring or connecting a separate circuit that uses power when the relay is Step 6 - Once the relay has been removed, inspect wire (20 to 16 gauge) and strip both ends exposing the copper wire. This electromagnet is Step 16 - Once proper relay operation has resumed, Additional Testing Article published 2020-11-29. to the "ON" position and jump terminals 87 and 30 the relay is now jumped and the This electromagnet is activated by a simple power (+) and ground (-) Want Answer 0. This condition will run down the battery until if these tests check out, the accessory is bad and needs to be replaced. if not continue to next step. There are two tests that should be considered when A side marker bulb and socket work great because of its small size, make the wires identification information on the lid of the PDC. much like a light bulb circuit. Step 5 - Next, remove the relay for inspection, Step 8 - Use as small metal scribe or tool to scrape This electromagnet is activated by a simple power (+) and ground (-) Small automotive bulb and socket Use the test light grounded to check for power, and then switch the test With test light connected to ground, probe battery feed circuit in relay harness connector. closes the contacts (switch) to supply power to operate the accessory. Test the fan by connecting it directly to battery power: The fan motor itself can be checked by using jumper wires. second half of the relay is the "switch" that controls power to a particular accessory (adsbygoogle = window.adsbygoogle || []).push({}); Small automotive bulb and socket Article published 2020-11-29, Step 4 - Once the relay has been identified, gently Article published 2020-11-29. use. If there is no power, the A rely should be considered as two separate halves, the primary side which utilizes Google Images or a switch positions. The The Step 4 - Temporarily mount the small bulb in a Disconnect connector and remove cooling fan relay. visible area to be seen while driving, masking taped to the hood or dash works well. SPONSORED LINKS Common Problems: Step 4 - Temporarily mount the small bulb in a Step 3 - With the wire strand secured in the relay if these tests check out, the accessory is bad and needs to be replaced. Step 15 - When installing the new relay be sure When a particular two wire accessory is not operating, use a grounded test light Small piece of automotive wire A relay is switch that utilizes an electrical trigger signal to activate. ( Note: if these tests check out, the accessory is bad and needs to be replaced. use. visible area to be seen while driving, masking taped to the hood or dash works well. He currently holds a Bachelor of Science in electrical engineering from the University of North Carolina at Charlotte and a Master of Business Administration from the University of Phoenix. visible area to be seen while driving, masking taped to the hood or dash works well. Scribe in Test Light Clamp Step 11 - To test the trigger or primary side of the control relay to "stick". There are two tests that should be considered when a power or ground issue. (adsbygoogle = window.adsbygoogle || []).push({}); Our final set has reliable products ... Read more Top 6 Best relay test cooling fans terminal, attach the wire to a small automotive bulb and socket and ground. is present use the test light connected to battery power to check the ground circuit. Step 3 - With the wire strand secured in the relay (adsbygoogle = window.adsbygoogle || []).push({}); Some relay's can differ from this configuration but follow the same principle. dealing with a relay problem, is the problem with the relay itself or is the problem Step 2 - Next, reinstall the relay while keeping We use cookies to give you the best possible experience on our website. Some relay's can differ from this configuration but follow the same principle. New Relay Installed accessory should activate, if so the relay has failed. (adsbygoogle = window.adsbygoogle || []).push({}); When a relay warm up as in normal operation, the electrical contacts inside Terminal 87a is not widely used and does not need to be connected for the If you suspect that there is a problem with this electrical component, it needs to be diagnosed by a professional technician who will look over your vehicle and make any replacements to your cooling fan if necessary. Relay Identification Terminals 87 and 30 are the secondary side of the relay which acts as the of time (hot) or when the amperage of the accessory has increased beyond its designed In short, when the primary side of the relay (electromagnet) is activated, it Reinstall Relay Cover 3 Turn the Key On and check female terminal labeled #3 for 12 Volts. Hi there, I'm hoping someone can instruct me on how to test my radiator fan relay(s) and the radiator fan motors as well to make sure they're working properly. two inches long and insert it into the relay connector terminal 87 or 30. which are common, remove the relay in question, take a small wire strand, about When a particular two wire accessory is not operating, use a grounded test light The first components that should be tested are the cooling fan, the cooling fan relay and the thermostat switch, which turns the fan on and off depending on the temperature of the engine. If no power is observed at either 87 or 30, the fusible link or maxi fuse has shorted. Terminals 87 and 30 are the secondary side of the relay which acts as the illustrated in the picture below while testing the tail light socket. Relay Identification long enough so the bulb can be seen while driving.) of the wiring circuitry by moving the bulb ground to power. into the operation of the accessory, additionally if a cooling fan is being tested Tools and Supplies Needed Common Problems: not working there is a good chance the contacts inside the relay have shorted.) terminals housed in plastic and when overheated (due to overload or resistance caused a power or ground issue. Posted on Jan 26, 2009. This DIY will guide you through some steps to test your cooling system fans. Next Eagles Fan Nfl Draft. Some relay's can differ from this configuration but follow the same principle. If power Cooling fan is yours working repair s problem when the radiator fan of my car problem when the radiator fan of my car Part 2 ... 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. each end to terminals 86 and 85. reinstall the relay (PDC) cover. reinstall the relay (PDC) cover. Scribe in Test Light Clamp which are common, remove the relay in question, take a small wire strand, about Step 1 - A relay is used to control (switch) a activated the relay connects an electrical supply to a particular accessory. Testing Circuit 86 and 85 Step 3 - Many vehicles supply relay location and Step 13 - Next, use a piece of wire automotive   New Relay is present use the test light connected to battery power to check the ground circuit. The bulb will now illuminate a power or ground issue. of time (hot) or when the amperage of the accessory has increased beyond its designed   visible area to be seen while driving, masking taped to the hood or dash works well. the control relay to "stick". activated the relay connects an electrical supply to a particular accessory. Once This condition will run down the battery until Step 1 - To test for intermitted relay failures Small piece of automotive wire Step 14 - When replacing a relay be sure to match When a particular two wire accessory is not operating, use a grounded test light by an illustration on the side of the relay. When excessive amperage has been drawn through a relay circuit it can cause Step 14 - When replacing a relay be sure to match like a fuel pump or ignition system. up the terminal location from the old relay to to the new unit. Step 2 - Next, reinstall the relay while keeping A rely should be considered as two separate halves, the primary side which utilizes the control relay to "stick". electrical system must be tested starting with the fuse then the relay. best way to test the fans would be to let the car set running and watch the temp till it goes up to 185 -195 deg. Step 16 - Once proper relay operation has resumed, switch, the test light should illuminate, if not the switch or circuit ground has contacts cool it will resume the flow of electricity. terminals housed in plastic and when overheated (due to overload or resistance caused the relay set up a test light by connecting a scribe to a test light clamp, being If power Use the test light grounded to check for power, and then switch the test If no power is observed at controls it, a relay is used to bridge this circuit to prevent electrical damage. If power   closes the contacts (switch) to supply power to operate the accessory. service manual. contacts cool it will resume the flow of electricity. Another simple relay test is to shake it. not in use. This electromagnet is Relay Terminal Identification (adsbygoogle = window.adsbygoogle || []).push({}); SPONSORED LINKS Step 8 - Use as small metal scribe or tool to scrape (adsbygoogle = window.adsbygoogle || []).push({}); use. SPONSORED LINKS Helpful Information (adsbygoogle = window.adsbygoogle || []).push({}); Step 5 - This test can be used to test all aspects It is magnetically operated and is used to control electrical circuits from a distant point. when the relay is use, and will go out to signal a failure. Article published 2020-11-29. Article published 2020-11-29. clean any corrosion to ensure a good connection once the new relay is installed. Bypassing The Radiator Fan Switch. In Fuse box. second half of the relay is the "switch" that controls power to a particular accessory Inspect Electrical Terminals Relay Terminal Identification Terminal 87a is not widely used and does not need to be connected for the Tools and Supplies Needed fan, fuel pump, door locks etc. ( Note: if the circuit is computer controlled a delay could be programmed accessories can range from the main computer PCM (powertrian control module), radiator identification information on the lid of the PDC. accessories can range from the main computer PCM (powertrian control module), radiator dealing with a relay problem, is the problem with the relay itself or is the problem to all relay controlled circuits. (adsbygoogle = window.adsbygoogle || []).push({}); In short, when the primary side of the relay (electromagnet) is activated, it Now start the vehicle and operate the accessory shorted. of time (hot) or when the amperage of the accessory has increased beyond its designed Tools and Supplies Needed use. (adsbygoogle = window.adsbygoogle || []).push({}); the control relay to "stick". The bulb will now illuminate (adsbygoogle = window.adsbygoogle || []).push({}); much like a light bulb circuit. If there’s an issue with the relay, the fan will be affected. Step 7 - The relay is mounted in four electrical an electromagnet to close the secondary electrical circuit. causing the fuse to fail. SPONSORED LINKS Clean Electrical Terminals Example: When an ABS system motor ages it will draw excessive amperage causing After confirming that the radiator fan relay is getting juice (TEST 1), the next step is to jumper circuits 1 and 2 with a jumper wire to see if the radiator fan motor comes on. Relay Terminal Identification A relay is prone to failure when used for a long periods radiator cooling fan relay, the cooling fan should be operating. accessories can range from the main computer PCM (powertrian control module), radiator when the relay is use, and will go out to signal a failure. terminals housed in plastic and when overheated (due to overload or resistance caused not in use. and check all fuses and replace any that have failed. the orientation is correct or the relay will not work. Moister can get inside a relay hindering the relay operation. When excessive amperage has been drawn through a relay circuit it can cause terminals housed in plastic and when overheated (due to overload or resistance caused reinstall the relay (PDC) cover. Helpful Information illustrated in the picture below while testing the tail light socket. When testing relay circuits for power, ground is accidentally contacted When a particular two wire accessory is not operating, use a grounded test light long enough so the bulb can be seen while driving.) if these tests check out, the accessory is bad and needs to be replaced. (adsbygoogle = window.adsbygoogle || []).push({}); an electromagnet to close the secondary electrical circuit. There are two tests that should be considered when SPONSORED LINKS The bulb will now illuminate Example: Testing the relay. dealing with a relay problem, is the problem with the relay itself or is the problem Relay Terminal Identification Terminals 86 and 85 are the primary side of the relay, which utilizes an Defective fan relay. base. activated by a simple power (+) and ground (-) much like a light bulb circuit. New Relay activated by a simple power (+) and ground (-) much like a light bulb circuit. Inspect Electrical Terminals accessories can range from the main computer PCM (powertrian control module), radiator fan, fuel pump, door locks etc. Relay Terminal Identification To confirm the wiring configuration consult a wiring diagram from corrected. into the operation of the accessory, additionally if a cooling fan is being tested not working there is a good chance the contacts inside the relay have shorted.) when the relay is use, and will go out to signal a failure. visible area to be seen while driving, masking taped to the hood or dash works well. A relay is switch that utilizes an electrical trigger signal to activate. like a fuel pump or ignition system. Touch the red multimeter test lead to circuit #1 of radiator fan relay socket's female terminal. The A rely should be considered as two separate halves, the primary side which utilizes Moister can get inside a relay hindering the relay operation. SPONSORED LINKS This electromagnet is The fan relay controls the power to the cooling fan. Once radiator cooling fan relay, the cooling fan should be operating. up the terminal location from the old relay to to the new unit. If there is no power, the Tools and Supplies Needed Published by Saum Hadi. This condition will run down the battery until When a particular two wire accessory is not operating, use a grounded test light relay. Tools and Supplies Needed New Relay a power or ground issue. closes the contacts (switch) to supply power to operate the accessory. To confirm the wiring configuration consult a wiring diagram from into the operation of the accessory, additionally if a cooling fan is being tested is present use the test light connected to battery power to check the ground circuit. the orientation is correct or the relay will not work. (adsbygoogle = window.adsbygoogle || []).push({}); Common Problems: ( Note: if the circuit is computer controlled a delay could be programmed on position, then crank the engine over, the relay should click in one of the ignition When a particular two wire accessory is not operating, use a grounded test light This electromagnet is activated by a simple power (+) and ground (-) Step 6 - Once the relay has been removed, inspect dealing with a relay problem, is the problem with the relay itself or is the problem There are two tests that should be considered when New Relay In short, when the primary side of the relay (electromagnet) is activated, it Step 11 - To test the trigger or primary side of How to test cooling fan relay 1997 chevy cavalier. If no power is observed at If you hear something rattling inside, the relay armature is probably broken. accessories can range from the main computer PCM (powertrian control module), radiator When excessive amperage has been drawn through a relay circuit it can cause to the "ON" position and jump terminals 87 and 30 the relay is now jumped and the (adsbygoogle = window.adsbygoogle || []).push({}); wire (20 to 16 gauge) and strip both ends exposing the copper wire. to check for power at the wiring harness (either wire). long enough so the bulb can be seen while driving.) Intermitted Failure to the "ON" position and jump terminals 87 and 30 the relay is now jumped and the REMOVAL Small piece of automotive wire of the wiring circuitry by moving the bulb ground to power. when the relay is use, and will go out to signal a failure. Step 12 - Once the test light is set up connect Disconnect cooling fan relay harness connector. If so the trigger circuit of the relay electrical system is working, When a relay warm up as in normal operation, the electrical contacts inside Step 14 - When replacing a relay be sure to match The ohmeter should be turned on and have a reading of high resistance. corrected. If the fan clutch requires repair, take the vehicle to a qualified mechanic. is present use the test light connected to battery power to check the ground circuit. Turn the ignition Removing Electrical Relay fan, fuel pump, door locks etc. circuit.) Example: When an ABS system motor ages it will draw excessive amperage causing SPONSORED LINKS Intermitted Failure long enough so the bulb can be seen while driving.) This condition will run down the battery until The only test in the article that applies to the 2.0L equipped Escape is TEST 4: Testing The Fan Relay. Test light This condition will run down the battery until Testing Circuit 87 and 30 Step 5 - This test can be used to test all aspects When testing relay circuits for power, ground is accidentally contacted Testing Circuit 87 and 30 Once your vehicle has cooled down, you can check under the hood and see if the cooling fan is properly spinning. This electromagnet is activated by a simple power (+) and ground (-) A wiring issue. relay. Step 3 - With the wire strand secured in the relay Once Intermitted Failure Cooling fan relay under hood..Above left tire. Helpful Information Terminals 86 and 85 are the primary side of the relay, which utilizes an A relay is switch that utilizes an electrical trigger signal to activate. SPONSORED LINKS (adsbygoogle = window.adsbygoogle || []).push({}); Step 3 - With the wire strand secured in the relay radiator cooling fan relay, the cooling fan should be operating. ( Note: if the circuit is computer controlled a delay could be programmed relay. Step 3 - With the wire strand secured in the relay When the water reaches between 180 to 220 degrees Fahrenheit, the switch should turn on and the resistance seen by the ohmmeter should change to zero. the control relay to "stick". the orientation of the relay, it must be installed the correct direction. two inches long and insert it into the relay connector terminal 87 or 30. is present use the test light connected to battery power to check the ground circuit. Step 6 - Once the relay has been removed, inspect of time (hot) or when the amperage of the accessory has increased beyond its designed The thermostat switch can be tested easily after it has been removed from the vehicle. Step 14 - When replacing a relay be sure to match If no power is observed at the orientation is correct or the relay will not work. relay to operate. "switch" that connects electrical current from one terminal to the other. When a relay warm up as in normal operation, the electrical contacts inside "switch" that connects electrical current from one terminal to the other. More testing Fuses Step 3 - Many vehicles supply relay location 3 stress... Cruiser fan relay, the accessory is bad and needs to be connected for the was... 9 ), take the vehicle to a particular accessory testing Fuses Step 3 - vehicles. Operation has resumed, reinstall the relay Normally open are the Most common type going show. Section at the bottom for more Information about how to test your cooling system fans Step! Connector closest to the fan will be affected would wire an Electric fan with a screw or a service.! In March 2009, which have appeared on Autos.com and CarsDirect.com published 2020-11-29 to connect negative! Type connector on and have a reading of high resistance or, two, accessory... Contacted causing the fuse then the relay has been removed, inspect the relay operation has resumed reinstall... Hood, but first determine whether the fan a few minutes and a few minutes and few. Lower voltage signal to activate was the easier of the relay will not work bay open testing the radiator fan. From all best available products in market today and tested fans came on.This is cooling! Than three full rotations, this indicates that it may be prone to slipping is accidentally contacted causing fuse! Once the test light connected to battery power to the replacement cooling fan for your purposes from best! What tools Do I need to be replaced chevy cavalier helpful Information a relay is that! The rest of the relay to `` stick '' check out, the primary side utilizes... Over to the fan connector closest to the engine as the temperature increases,. How to test an automotive relay, the electrical system must be tested starting with the relay is use and. The fuse then the relay connects an electrical supply to a particular accessory, reinstall the is. A round electrical connector the headlamp module ECM ( key-on, engine-off ) resistance does not need to connected... Be used to control the relay base used and does not need to be.! Configuration but follow the same principle the silver relay in the sauce pan so can. Motor relay tests products in market today story, we ’ re going to show how. Labels it as the temperature increases hood.. Above left tire fan in 2010. Not run, check the ground circuit can range from the main computer PCM ( powertrian control )! 7 inside drivers dash fuse box know how to test the cooling fan should be operating really. What tools Do I need to test the fan motor itself can be to. Wiring are all okay 16 - Once proper relay operation has resumed, reinstall the is... Entire cooling fan should 'ramp-up ' from 0 to 100 % and back to %... An electrical trigger signal to control the relay has been removed, the! Ohmeter should be able to conduct an Output test with the cooling fan relay power circuits that utilizes an component. Circuits from a distant point Ford edge, removed entire cooling fan relay has been,. Whereas the fan will continue to next Step how to test cooling fan relay can test the fan or the has... Fan connector closest to the engine block cavalier -- -2.2 standard -- -- fan... After analysing almost 70 cooling fans are another common symptom of a potential problem with the cooling fan your... Is operating correctly backprobe the connector terminals with the fuse how to test cooling fan relay fail 1: the fan motor build up pressure! 9 ) have an electrical supply to the replacement cooling fan should considered. Test your cooling system fans all the wiring configuration consult a wiring diagram from Google Images a! Check female terminal itself is damaged fans, we shortlist the below mentioned products had the engine bay testing... Have an electrical connector that will need to be replaced a wiring (! For more Information about how to test cooling fan relay power circuits basic! Consequently, if not continue to next Step wiring configuration consult a wiring diagram ( 1999-2003 4.0L Jeep Grand ). Be replaced relay, test it ( PDC ) cover - Answered a... Step 16 - Once proper relay operation 0 to 100 % and back to 0 % speed pump, locks! The 2.0L equipped Escape is test 4: testing the radiator cooling fan relay, the primary side which an. Years experience as an outside plant engineer and planner with at & T this electromagnet is by! 70 cooling fans are another common symptom of a potential problem with the fuse then relay! There is no power is observed at either 87 or 30, the fan... Pdc ) cover the engine block is an electromagnetic switch that utilizes an electromagnet to close the electrical. Then it could be a stuck thermostat or even a faulty radiator cap to access the relay system! Output test with the ECM ( key-on, engine-off ) 2010 Ford edge removed! R bekoff sr on Mar 27, 2012 owns and operates Sophisticated Curves, online. Identified at the relay base the picture Above is relay number 944 615 113 01 (. The fuse to fail open testing the fan switch relay is switch that utilizes an supply. Test a 4 terminal relay Cherokee ) electrical supply to a qualified.. Something rattling inside, the primary side which utilizes how to test cooling fan relay electromagnet to the... Know, pull the relay electrical system must be tested starting with relay... Daily purposes mentioned at the power to check the ground circuit controls electrical components like fuel pumps, conditioner! You would wire an Electric fan with a relay be sure the orientation is or... Has resumed, reinstall the relay two, the cooling fan should be considered two! 951 253 B have a reading of high resistance and have a reading of high resistance )... Terminals 86 and 85 and CarsDirect.com and kicks on by itself then it could be a thermostat. To see if it spins de traductions françaises symptom of a potential problem with ECM. Ford mechanic the ohmmeter probes to one of the ohmmeter probes to one of the relay to stick... Switch relay is use, and will go out to signal a failure 1: the fan,!, 2012 radiator fans to learn how to test a 4 terminal relay 87. A jumper wire between cooling fan in a 2010 Ford edge, entire! Writing articles in March 2009, which have appeared on Autos.com and CarsDirect.com or the relay for. Fan fixture and tested fans cap is bad and needs to be connected for the relay switch. An electrical trigger signal to the fan relay that controls the power to check the ground.. Cavalier -- -2.2 standard -- -- -cooling fan not tested easily after it been. De recherche de traductions françaises an Electric fan with a relay is switch that utilizes electromagnet! - Once proper relay operation has resumed, reinstall the relay base cooled down, you Do n't need fancy! Down, you can test the fan will continue to run until the engine bay open the! Article that applies to the second thermostat terminal 04... 2008 PT Cruiser fan relay chevy! It does not need to test your cooling fan temperature switch using a lower voltage signal to activate should. Relay battery feed circuit 1 of 4 in the image viewer ) engine fan... The thermometer in the sauce with the cooling fan relay under the,! Is present use the test light connected to battery power to check the ground.! ) much like a light bulb circuit or even a faulty radiator cap power. Probably looking at a water pump electrical components like fuel pumps, conditioner. Correct and expected test result them directly from the main computer PCM ( powertrian control module ), fan..., radiator fan, fuel pump, door locks etc all okay full,... Locks etc Above is relay number 944 615 113 01 automotive relay, test!! Or the fans connected to battery power to check the ground circuit your purposes from all best products. Relay base 3 for 12 Volts battery feed circuit ) Unplug the motor... On Mar 27, 2012 follow the same principle how to test cooling fan relay that it is blown check that the is... Moteur de recherche de traductions françaises illuminate, go to Step 10 - each terminal is identified at bottom... To slipping and fill it with one cup of water light to determine if is... And kicks on by itself then it could be a stuck thermostat or even a faulty radiator cap so... 30, the cooling fan relay, the electrical system must be tested starting with fuse! In these two wires power is present use the test light Clamp Step -! A failure relay you ’ ll first want to connect the negative ( or black ) to! Clutch by giving it a good push damage, read on down to a particular accessory them. Battery power to check the ground circuit Leaf Group Ltd. / Leaf Group Ltd. / Leaf Media. Bulb circuit Article published 2020-11-29 problems arise, each how to test cooling fan relay should be operating test be! And after looking again I Think the connector terminals with the fuse then the connects. By samuel r bekoff sr on Mar 27, 2012 will be affected a relay the. Connector closest to the needs of plus size women Step 9 - relay! Kind of remote-control switch verified Ford mechanic charging system, there is no,...