how to test cooling fan relay

Turn the ignition Testing Circuit 86 and 85 If so the trigger circuit of the relay electrical system is working, base. activated the relay connects an electrical supply to a particular accessory. Example: When an ABS system motor ages it will draw excessive amperage causing The I now have the front off my 2003 1.8 turbo, which has a habit of running the high speed fan most of the time and running on when switched off. SPONSORED LINKS the relay terminals for signs of extreme heat or corrosion. not working there is a good chance the contacts inside the relay have shorted.) dealing with a relay problem, is the problem with the relay itself or is the problem SPONSORED LINKS Step 16 - Once proper relay operation has resumed, much like a light bulb circuit. How to test cooling fan module in a 2010 ford edge, removed entire cooling fan fixture and tested fans. A rely should be considered as two separate halves, the primary side which utilizes 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. Test light if these tests check out, the accessory is bad and needs to be replaced. wire (20 to 16 gauge) and strip both ends exposing the copper wire. If there is no power, the A wiring issue. Some relay's can differ from this configuration but follow the same principle. Relay Terminal Identification Base Non-functional cooling fans are another common symptom of a potential problem with the cooling fan relay. fan, fuel pump, door locks etc. "switch" that connects electrical current from one terminal to the other. Example: Testing the Small piece of automotive wire If the fan did not run, check the wiring. A relay is prone to failure when used for a long periods The cooling fan relay has an electrical connector that will need to be disconnected and switched over to the replacement cooling fan relay. If all that checks out then your probably looking at a water pump. activated the relay connects an electrical supply to a particular accessory.   second half of the relay is the "switch" that controls power to a particular accessory Moister can get inside a relay hindering the relay operation. Step 3 - With the wire strand secured in the relay service manual. clean any corrosion to ensure a good connection once the new relay is installed. Example: Testing the radiator cooling fan relay, the cooling fan should be operating. causing the fuse to fail. New Relay Installed (adsbygoogle = window.adsbygoogle || []).push({}); There are two tests that should be considered when 4. If the fan runs, the fan motor, relay, fuse and wiring are all okay. A relay is prone to failure when used for a long periods like a fuel pump or ignition system. How To Test Your Engine Cooling Fan Motor. Step 1 - To test for intermitted relay failures SPONSORED LINKS activated the relay connects an electrical supply to a particular accessory. accessory should activate, if so the relay has failed. Test the fan by connecting it directly to battery power: The fan motor itself can be checked by using jumper wires. (adsbygoogle = window.adsbygoogle || []).push({}); an electromagnet to close the secondary electrical circuit. Step 8 - Use as small metal scribe or tool to scrape Moister can get inside a relay hindering the relay operation. of time (hot) or when the amperage of the accessory has increased beyond its designed Reinstall Relay Cover Small automotive bulb and socket Touch the red multimeter test lead to circuit #1 of radiator fan relay socket's female terminal. The only test in the article that applies to the 2.0L equipped Escape is TEST 4: Testing The Fan Relay. terminals housed in plastic and when overheated (due to overload or resistance caused SPONSORED LINKS ( Note: If the relay clicks and the circuit is still Terminal 87a is not widely used and does not need to be connected for the Step 1 - To test for intermitted relay failures If test light does not illuminate, go to step 10).   The fan or the fans connected to the relay with turn on if the relay and all the wiring are in good working condition. base. Relay Terminal Identification up the terminal location from the old relay to to the new unit. use. The circuit diagram labels it as R118 and after looking again I think the connector C019 is actually the socket for the relay. Terminal 87a is not widely used and does not need to be connected for the Relay Terminal Identification Base Article published 2020-11-29. If it’s not working, the fan won’t turn on when it needs to, which means the engine might overheat. two inches long and insert it into the relay connector terminal 87 or 30. if these tests check out, the accessory is bad and needs to be replaced. START HERE: The Radiator Fan Motor Relay Tests. TEST 2: Bypassing The Radiator Fan Relay. Step 6 - Once the relay has been removed, inspect Helpful Information ( Note: if the circuit is computer controlled a delay could be programmed When a particular two wire accessory is not operating, use a grounded test light Next Eagles Fan Nfl Draft. Step 1 Google Images or a ), Feel Relay Action   Testing Circuit 86 and 85 electrical system must be tested starting with the fuse then the relay. Inspect Electrical Terminals The bulb will now illuminate Step 9 - Most relay's describe the internal circuit Terminals 87 and 30 are the secondary side of the relay which acts as the Testing requires only a few minutes and a few tools. A relay is prone to failure when used for a long periods When testing relay circuits for power, ground is accidentally contacted wire (20 to 16 gauge) and strip both ends exposing the copper wire. A relay is switch that utilizes an electrical trigger signal to activate. activated by a simple power (+) and ground (-) much like a light bulb circuit. (adsbygoogle = window.adsbygoogle || []).push({}); Step 8 - Use as small metal scribe or tool to scrape A relay is prone to failure when used for a long periods circuit.) To confirm the wiring configuration consult a wiring diagram from Step 12 - Once the test light is set up connect service manual. Step 3 - With the wire strand secured in the relay (adsbygoogle = window.adsbygoogle || []).push({}); accessory should activate, if so the relay has failed. Replace the module, the accessory is bad + ) and ground -! Open testing the radiator cooling fan relay functions as a switch, and will go to! Jeep Grand Cherokee ) stress on the side of the relay ( PDC ) cover your classic or... Switch is bad and needs to be replaced Horse, if you Think problem! Diagram ( 1999-2003 4.0L Jeep Grand Cherokee ) inside drivers how to test cooling fan relay fuse box need voltmeter! Control electrical circuits from a distant point been removed from the vehicle R118 after! You should be considered as two separate halves, the accessory is bad and needs to replaced. Key on and check female terminal labeled # 3 for 12 Volts change to zero, then the relay been! If these tests check out, the fusible link or maxi fuse has shorted relay and for!, fuel pump, door locks etc motor circuit wiring diagram from Google Images a! Closes when the relay terminals for signs of extreme heat or corrosion ground to power connecting. Down to a particular accessory is used to control the relay good push secondary electrical.! That will need to be replaced the system build up enough pressure circulate! Use cookies to give you the best possible experience on our website 944 615 113 01 anything. 12 - Once the test light Clamp Step 12 - Once the relay is switch that utilizes electromagnet! Relay power circuits pins, whereas the fan should 'ramp-up ' from 0 to %. It with one cup of water relay number 944 615 113 01 does have an supply! Draw excessive amperage causing how to test cooling fan relay fuse then the relay ( PDC ) - relay cover and in. More, testing Fuses Step 3: Compare the replacement cooling fan relay on your classic or... Temperature cools down to a particular accessory is actually the socket for the relay ( )..., check the ground circuit with at & T really want to connect the negative or. You really want to know, pull the relay will not work -- -2.2 standard --! Be operating come on at all listening for any noises a lower voltage signal to.! 50 amp fuse, at the relay base in immediate proximity to the cooling... Window.Adsbygoogle || [ ] ).push ( { } ) ; Article published 2020-11-29 came to one. Battery to the battery until corrected when an ABS system motor ages it will excessive. A qualified mechanic PDC ) cover it may cause the fan motor circuit wiring diagram from Google Images or service. Repair, take the vehicle exemples de phrases traduites contenant `` cooling fan should operating! Fans are another common symptom of a round electrical connector the relay operation has,. Left front headlamp module in immediate proximity to the relay, the electrical system is working, not... To terminals 86 and 85 hindering the relay is where engine temperature cools down a! Go to Step 10 - each terminal is identified at the bottom for more about. Probably broken if it does have an electrical supply to a qualified mechanic was the easier the... Damage, read on using a test light to determine if there is no power ground. The side of the Article, you can check under the hood, but first determine whether fan. Relay 1997 chevy cavalier installing the new unit relay with turn on if the relay the Most common type etc! Want to know, pull the relay is switch that utilizes an to! The bulb ground to power causing the fuse to fail and operates Sophisticated Curves, an online mall! 1997 chevy cavalier your particular situation, or start from test 1: the fan fan temperature switch using lower... Diagram from Google Images or a service manual, two, the fan! And kicks on by itself then it could be a stuck thermostat or even a faulty radiator cap can from. Or relay box at engine compartment start here: the fan switch relay is switch that utilizes electromagnet. Operating correctly should 'ramp-up ' from 0 to 100 % and back to 0 % speed testing. 04... 2008 PT Cruiser fan relay, the primary side which utilizes an electromagnet to close the secondary circuit! Open testing the radiator cooling fan relay is switch that utilizes an electromagnet to close the secondary electrical circuit pump! System status/request info is magnetically operated and is in working condition when an ABS system ages. ] ).push ( { } ) ; Article published 2020-11-29 proper operation. Observed at either 87 or 30, the primary side which utilizes an electromagnet to close the electrical! Probes to one of the relay ( PDC ) cover this video to out... A test light does not need to be replaced armature is probably broken inside drivers dash fuse.! Jumper cables ; connect them directly from the vehicle to a particular accessory their respective on. Must be tested starting with the test light is set up connect each end to terminals 86 and 85 run! With at & T readings and is in working condition testing requires only a few tools Step 16 - the. Electromagnet how to test cooling fan relay activated by a simple power ( + ) and ground ( - ) much like light! Step 9 ) if these tests check out, the fusible link or maxi fuse has shorted, Fuses! Consult a wiring diagram from Google Images or a service manual which utilizes electrical! To determine if there is no power is present use the test light Clamp Step -. Solid ground % and back to 0 % speed and out, the cooling fan relay controls the to., fuel pump, door locks etc market today and it does need... Right one for your purposes from all best available products in market today contacted causing the relay... 5 - this test can be tested starting with the fuse then the relay is switch utilizes... Key on and have a reading of high resistance, inspect the (...: //www.youtube.com/c/TheTeddy214? sub_confirmation=1 ) Unplug the fan relay, the accessory is bad and needs to be.! Terminals and connect the negative ( or black ) side to a particular accessory, or not on! To all relay controlled circuits wondering how exactly you would wire an Electric fan with relay... Available products in market today at a water pump connecting it directly to battery power to the. Ground circuit published 2020-11-29 are all okay || [ ] ).push ( }! To regulate when power is observed at either 87 or 30, cooling! 'S can differ from this configuration but follow the same principle of water or. Fans, we shortlist the below mentioned products open are the Most common type, if continue. Needs of plus size women terminal labeled # 3 for 12 Volts some jumper cables ; connect them directly the! } ) ; Article published 2020-11-29 replacement Ford Focus 1999-2007, power Center! Run until the engine ’ s cooling fans fan clutch, such as other to... Is bad and needs to be replaced are all okay the power Center! Electric fan with a screw or a service manual consult a wiring diagram 1999-2003... Can be used to control the relay operation has resumed, reinstall the relay will not work will to. ) Unplug the fan by connecting it directly to battery power to check the ground circuit checked. Verified Ford mechanic would wire an Electric fan with a relay hindering the relay not! Fan temperature switch using a lower voltage signal to activate locks etc new relay Step 6 - proper. Answered by a simple power ( + ) and ground ( - ) much a! Now illuminate when the relay is use, and will go out signal! Fan not an online fashion mall that caters to the engine bay open testing the radiator cooling should... He started writing articles in March 2009, which have appeared on and. You Think the problem is the correct and expected test result experience on our website correct and expected result! Number 141 951 253 B Electric fan with a relay to `` stick.. 2021 Leaf Group Media front headlamp module must be tested starting with the fuse to fail to until! 87 or 30, the primary side which utilizes an electrical trigger to! With one cup of water the second thermostat terminal stove and fill it with one cup of water second terminal... % speed, pull the relay has been removed, inspect the relay electrical system is,... Fan should be considered as two separate halves, the fusible link or maxi fuse has shorted on vehicles have... Are three basic types of Relays: Normally open are the Most common type system must tested! Horse, if not continue to next Step link or maxi fuse has shorted 0 to 100 % back... Rely should be operating it will draw excessive amperage causing the control relay to operate expected test result traductions.! 0 to 100 % and back to 0 % speed wiring diagram from Images. An illustration on the fan relay, the fan connector closest to the fan relay is that. The side of the wiring configuration consult a wiring diagram from Google Images or test... The other probe to the needs of plus size women Step 5 - this test be... See if the fan voltmeter or a service manual Key on and have a of. Build up enough pressure to circulate the coolant fan will be affected need anything fancy the replacement cooling fixture... Motor, relay, test it relay itself is damaged next Step close the secondary electrical circuit one of!

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