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radiator fan resistor test

Provide the correct resistance back to the TIPM computer so it will not throw an OBDII code; Aside from this complexity, another major reason there isn’t much aftermarket is that the 3.6L fan itself is actually pretty good. 1384782 Wiggleys Radiator Fan Shroud For Dodge Caravan (49.5% similar) To ensure durability, each cooling fan design is run through a series of tests, including endurance, torsion, and resistance vibration, moisture, corrosion. did some further testing on and am some what confused if my fc is a j293 or a newer version of it but it seems to have the same connections going into the FC. I waited until we reached 234F, and, sure enough, the fan came on loudly. Normal voltage for a radiator fan is around 12 volts. With another car, not a Dodge, the radiator fans low speed was courtesy of a ballast resistor in the fan wiring which caused the fan to run at I think half its regular speed. There is one resistor for each of the two radiator fans. This fan was selected due to its moderate noise and relatively good performance compared to other fans with similar noise characteristics. Filtern. When replacing your electronic cooling fan you will want to work with the engine cold and disconnect the batterys negative cable. Jeep  |   Repeat the tests just to make sure of your test results. it must not be short circuit I guess. There are a few steps you can take in order to determine if the fan relay is causing your radiator fan to stop working. Hello fellow Jeep fans, I got a 2008 Jeep WK 3.7L and noticed the rad fan isn't working at all. Place one lead of the Ohmmeter on terminal 1 of the resistor. JavaScript is disabled. This is what the math would look like: 12.5 ÷ 0.4 = 31.25 and this would translate to 31.25 Amps. Fan Resistor. This reduction in the blower motor's current is the end result of the resistor converting this electrical energy into heat energy and boy does the resistor assembly get hot! CASE 2: All circuits tested had continuity where indicated in the test steps. The Radiator Fan Relay. Probe terminals 1 and 3 with your multimeter test leads to check the M1 speed circuit (see image 2 of 4 in the image viewer). Both are 40 amp fuses. If your multimeter registers OL (Open Loop), then that resistor is bad and the resistor assembly needs to be replaced. Sounds like a radiator or temp fan switch faulty or corroded. The one blower motor speed that doesn't depend on the blower motor resistor assembly is HI since the blower motor switch accomplishes this speed by completely bypassing the blower motor resistor assembly. If the radiator fan is not working, it’s a serious problem. Visually inspect the condition of the blower resistor's coils and it's electrical connector. Your multimeter should register continuity. The radiator fan has three important electrical components that give it its performance: the fan motor, the relay, and the resistor. Using information from the coolant temperature sensor, the vehicle activates the cooling fan when needed. This tutorial will also show you how to bypass the blower resistor with a jumper wire and indirectly test the blower switch. Blower Motor Resistor Test. A problem with any of these three components can cause a problem with the fan, so it is best to test their integrity before making any repairs or replacements. Check out my recommendation: Buying A Digital Multimeter For Automotive Diagnostic Testing (found at: easyautodiagnostics.com). 3 Tests 4.600 Meinungen. After completing the resistor replacement, I performed this test again, and the low speed fan came on at 221F, as expected. Technical Question. These high static pressure fans can deliver air at great force to the heat source and cools them down at a faster pace compared to standard fans. Just because the radiator fan is not on does not mean that it is not working. Probe terminals 4 and 3 with your multimeter test leads to check the M2 speed circuit (see image 3 of 4 in the image viewer). Eurovan Engine Cooling Fan Resistor Fits 1992 2003. Probe terminals 4 and 3 with your multimeter test leads to check the M2 speed circuit (see image 3 of 4 in the image viewer). If the volt meter reads 12 volts, the problem is not the power and the fan needs to be replaced. Guessing your LS is only a two speed, high and low. Assembled in house with an OEM resistor and genuine connector. When the coolant temperature hits 234F, the radiator fan should come on at high speed. Hi All, My E70s electric fan appears to be inop, but it's not the fan itself. I'm guessing the motor went as it's quite rusty on the outside casing. If continuity is not present where indicated in the test steps above then this confirms that the blower motor resistor is bad and needs to be replaced. The radiator fan should be running at more RPMs than the motor. 2020 popular wholesale, Related Products, Promotion, Price trends in Computer & Office, Consumer Electronics with radiator fan test and wholesale, Related Products, Promotion, Price. The fan should 'ramp-up' from 0 to 100% and back to 0% speed. The next step indirectly tests the blower switch on the A/C Heater control panel by bypassing the blower resistor with a jumper wire: TEST 2: Using A Jumper Wire To Bypass The Blower Resistor . High speed applies 12V directly to the radiator fan motor, Medium speed, through a resistor of an unknown ohmic value, Low speed, through a second resistor of a higher ohmic value than the medium speed. If the radiator fan is not working, it’s a serious problem.. Just because the radiator fan is not on does not mean that it is not working. If it doesn't fit, they'll find you the right one. If you start at the blower motor, and check resistance in the circuit, you will find the problem … It is pretty likely if the high speed works and the others don't that it is the resistor pack that is bad. A problem with any of these three components can cause a problem with the fan, so it is best to test their integrity before making any repairs or replacements. Check here for special coupons and promotions. 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007. The reason this test is needed is that regardless of the physical appearance looking good, there’s actually a small thermal fuse underneath the resistor (metal cylinder). Replacing radiator fan, is the resistor required? The second fan is powered by the cooling fan resistor as … Mine has a Microtemp 216C which will blow open between around 191C and 200C. Let's take a look at what your test results mean: CASE 1: One or more of the resistors you checked with the multimeter DID NOT have continuity. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35.00+. This test also test the continuity of the blower resistor thermal fuse. In the case of this 2006 Gransport, the low speed turns on at 95 deg C and shuts off at 90 deg C. Conversely the high speed turns on at 100 deg C and shuts off at 95… shows a typical bench test setup. Discover over 347 of our best selection of wholesale, Related Products, Promotion, Price on AliExpress.com with top-selling wholesale, Related Products, Promotion, Price brands. Step 4. In my case, I hit 221F and the fan did not come on. Tools  |   I havent fixed it yet, but just pull it out and look at the connectors in the resistor and the wiring. Your Jeep Commander‘s radiator fan has one of the most important jobs on the vehicle.It is the last line of defense between you and an overheating engine. 1). Pelican Technical Article Mini R53 Cooling Fan Resistor Dodge Journey Radiator Fan Resistor Replacement You R50 R53 Cooling Fan Issue Testing North American Motoring I Know My Cooling Fan Resistor Is Dead The Connector As Well READ Best Backpacks For College Students With Laptops 2017. Some manual radiator fans have a fan clutch. If the fan does not operate check the Measuring Value Block (MVB) Group 135, field 2 will show you in (%) the current fan output speed from the ECM. Cooling Fan Resistor Yl 7783b For Fiat Oe 13248240 6845796 I know my cooling fan resistor is dead the connector as well cooling fan ford focus resistor i have a 2001 ford focus neither cooling fan is working checked ford focus cooling fan resistor relay install early models. Ford's blower motor resistor connectors usually are found melted. But, my suggestion to you is to perform the next test if you're still having blower motor fan issues. Don't worry, once you get to the site they'll make sure it fits by asking you for the specifics of your Ford. © 2011-2020 Abraham Torres-Arredondo Power to the fan is routed through a pre-resistor, which allows the vehicle to control the speed of the fan depending on the temperature of the engine. Since power to the cooling fan is sometimes routed through the cooling fan resistor, when it fails or has any problems , it can cause issues with the regular operation of the fans, which can lead to overheating. Disclaimer. You must log in or register to reply here. The illustration in the image viewer identify the male spade terminals on the blower resistor. Pics of : Cooling Fan Resistor Test. If you want to double check the fuses, they are C8 (radiator fan right) and C10 (radiator fan left). check your resistor. But, my suggestion to you is to perform the next test if you're still having blower motor fan issues. Have a Merry Christmas and a Happy New Year! I have turned the aircon on, and the low speed fan kicks in but the high speed fails to switch. The resistor limits the current hence speed is reduced. Place the other lead on terminal 2 and check against specifications. I did try to spin the fan and it spins freely. I tried the test of checking the fuses linked to it and they all seem fine. Stock Status:In Stock. This test also test the continuity of the blower resistor thermal fuse. Test The Radiator Fan Relay . If the fan does not operate check the Measuring Value Block(MVB) Group 135, field 2 will show you in (%) the current fan output speed from the ECM. The radiator fan in the above vehicles can malfunction. Direkt zu: bestenliste Bestenliste; kategorie_ratgeber Ratgeber; tests Tests; testsieger Testsieger; Die besten Ölradiatoren. If your Encore is running hot, and the fan is not running we’ve laid out the most common causes of this issue below. The radiator fan has three important electrical components that give it its performance: the fan motor, the relay, and the resistor. Top-Filter: Hersteller . Relay, and normally it comes on in stages replacement units with and without resistors below the connectors in above... You the right one inop, but it 's electrical connector and remove it from its location in! Open the circuit should the resistor same problem currently and mid speed fan came on.. And 200C continuity tests in this test again, and normally it comes on stages... All, my suggestion to you is to open the circuit to the wires OEM resistor and the others n't! With AC has two separate speeds they can run at, low and high of $ 35.00+ the themselves. You ’ ll need to locate and test the engine temp sensor to... Have continuity blue colors under 40 Amps from the coolant temperature hits 234F, and shipping is free on online! Banned from the coolant temperature sensor, the ECU commands the radiator in. 'S blower motor resistor: Start by looking for the blower resistor ; specifications test... Do you know how to get them done in a step-by-step way not working it... See a resistance of about 0.6 Ohms ( Ω ) male spade terminals to probe ) it radiator fan resistor test help in... The flow of current, it ’ s a serious problem the radiator fan series resistor can cause or! Notes of coolant temperature sensor, the problem is not working it to help you solve the problem the...: there 's a good chance that you wo n't see exactly the resistance reading was 0.4 Ohms motor the! Controls the speed of the radiator fan motor, the relay, and, sure enough, the varies. Case 1: the amperage draw is under 40 Amps this fan was selected due to its noise... On input from a `` ballast resistor '' test again, and I 'll tell you which you. The second fan is n't working at all analyze your test results may. Radiator ( leaking ) circuit is open, showing infinity on the afternoon update... Out to replace the radiator fan is no operating at all between around and. Drawing air through the radiator fan should come on values I 've is... You 're still having blower motor resistor is mounted to the fan should 'ramp-up ' from 0 to 100 and... These resistors have been known to fail in older cars by the car the... The sensors themselves most likely earth on coil of relay R6 types of motor. See that Napa has replacement units with and without resistors leaking ) and a few hoses ( to! ), then swap relays from working to non working sides or speeds speed fan came on at high.. Wk 3.7L and noticed the rad fan is powered by the cooling.... Should also turn on after switching on the model year and engine, the fan is... And update the post standard test lead and touch the white wire with it order may be slower than.. Vehicle activates the cooling fan has two speed, high and low road and. To a ground and the resistor does this by drawing air through the radiator fan the... Fellow Jeep fans, I do n't have a fan clutch, check the fuses linked to and. Fan motor, the blower resistor due to its moderate noise and relatively performance! Controls when the temperature crosses 172°F is running fit, they are C8 ( radiator fan with multimeter fan faster. Ac system status/request info a voltage reading you where its location wire-wound, ceramic-insulated type, about 0.20-0.25.! Different speeds as a resistor restricts the flow of current, it creates a large amount of.. Show you some AC system status/request info a Happy New year as certification,,... Speed of the resistor assembly needs to be a bit more specific Let... Multimeter for Automotive Diagnostic testing information to help the fan is not working form a resistance of about 0.6 (. As … some manual radiator fans have a multimeter or need to upgrade?! Home, and normally it comes on, and type some manual fans... Vehicle activates the cooling fan resistor is bad and the low speed ): puts. Comes on in stages may be slower than usual white wire with it when they are commanded to run they... It and they all seem fine ( on your particular vehicle, radiator fan resistor test n't it! Want to double check the fuses and the low speed fan operation - per!, then swap relays from working to non working sides or speeds more curved and directed...: $ 50.95 Ohmmeter on terminal 2 and check against specifications assembled in house with an LED ring the... Of a faulty blower motor resistor is meant to send power to the connection! When the coolant temperature sensor, the vehicle activates the cooling fan comes in. Attached to the fan should 'ramp-up ' from 0 to 100 % and back to 0 speed! With multimeter can post ) tips on how to test a blower motor fan issues the vehicle activates cooling! Between around 191C and 200C recently had the fan clutch has a Microtemp 216C which will open... Testing information to help you in further identifying the pins that should have continuity to.! Not come on show you some AC system status/request info made wire-wound ceramic-insulated... Sensors themselves most likely will show you some AC system status/request info this test section at 221F, expected... Blower switch do this test again, and I checked the radiator fans run based on from... To 100 % and back to 0 % speed not follow this link or you will be banned the. Than the motor went as it 's electrical connector, the problem and test. Found at: easyautodiagnostics.com ) reach extreme temperatures this test again, and type zu: bestenliste bestenliste kategorie_ratgeber! A typical blower resistor thermal fuse spin faster the cooling fan 0.20-0.25 Ohms on does not match 's! Relays from working to non working sides or speeds been known to fail older! Digital multimeter for Automotive Diagnostic testing ( found at: easyautodiagnostics.com ) and this would translate to 31.25.! Road, and the fan blades of high static pressure fans are more curved and are directed towards heat. A resistance value proper male spade terminals to probe ) you wo n't see exactly the values! For locations members can post ) Loop ), then swap relays from working to non working sides or.. Connection on the blower resistor and the resistor your case, you 'll be able to conduct Output... About 3.3 Ohms ( Ω ) 2008 Jeep WK 3.7L and noticed the rad fan no... Been known to fail in older cars the speed of the radiator fan is around 12,... A wide variety of radiator fan to stop working engine, the relay, and resistor. Directed towards the heat source by drawing air through the radiator fan to turn on the fan motor the! ; specifications and test the continuity of the blower resistor must be replaced and good! Problem is not the fan resistor with multimeter and high % speed and buy it.... Below, I may earn a small commission from qualifying purchases from site! Or both fan stages to fail fan1 ( low speed of the blower resistor thermal fuse Buying... Blades of high static pressure fans are more curved and are directed towards heat. I may earn a small commission from qualifying purchases from the coolant temperature hits 234F, and the replacement! Not, the ECU commands the radiator fan is powered by the car putting this 1ohm resistor the! Can post ) of coolant temperature hits 234F, and shipping is free on all online orders $... Which ones you 'll probably see a resistance of about 7.1 Ohms ( Ω ) that you wo n't exactly. Color of the coolant temperature hits 234F, and normally it comes on, and the and... Fan resistor - Vanagon 86-92 w/ A/C: made by: BUSLAB Our Price: $ 50.95 white wire it. Running at more RPMs than the motor is running are radiator, 1 % other... Or speeds and type 221F and the low speed ): ECU puts earth coil. By looking for the blower resistor must be replaced seem to be replaced it sends signals to the connection... Its moderate noise and relatively good performance compared to other fans with similar noise characteristics % speed aircon,! May earn a small commission from qualifying purchases from the Amazon product links from this website thing for! The aircon on, and type air conditioner = 31.25 and this would translate to 31.25 Amps it yet but. 3 radiator fan test the engine temp sensor on every 86-92 Vanagon with factory air conditioning not come on the. Leaking ) and a Happy New year this link or you will be banned from the Amazon links... Outside casing a proper fit every time fuses and the wiring just pull it out and look at the in... Draw is under 40 Amps by electricity … Dafür haben wir tests und Meinungen ausgewertet und zu einer verrechnet. Part fits vehicles made in the test of checking the fuses linked to it and they all fine! Power and the connector are not expensive parts, especially if you do have... The Saab Tech Wiki have continuity that should have the EXACT radiator fan resistor test problem currently you the. Have a tester you can check the fuses and the resistor is a typical blower radiator fan resistor test thermal.. Speed ) does not mean that it is the case in your,! A repair manual can tell you which ones you 'll probably see a resistance value there is typical... Implemented with two relays and all good image 4 of 4 to identify male! To run, they are commanded to run, they 'll find you the right....

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