If there is not, you need to check both the wires and the fan relay to see if replacement is required. Because the radiator fan requires a high level of current, a relay, managed by the logic module, turns the fan on and off. It's mounted to the inside of the frame rail on the driver's side, near the radiator. When I got home later that evening and shut the car off I noticed the radiator fan stayed on leading me to suspect something else was the problem. (This was also confirmed by turning on the AC. Have read quite a bit here about cooling fan problems and I think my Z may be a victim. How to replace the mechanical engine fan with an electric fan in 1990-1994 Lexus LS400's. The compressor relay can be accessed by removing the terminal cover box. (This test will not activate the A/C Condenser Fan. Auxiliary Electric Cooling Fan Removal. Replacing the cooling fan clutch will not correct the condition. If you are searching for read reviews New Radiator Cooling Fan Relay for Dodge Neon L4 34201631 4707286AF 4897034AA 4707286AD price. It is not showing any codes whatsoever. For low fan speed, the ECM grounds the low-speed relay coil, closing the relay contacts. Check the relay for the fans: (MOST LIKELY FAILURE AND MOST DIFFICULT) If the Radiator fan control module has failed you will need to replace it with a new one there is no way to repair it. And the ground side of the relay can be generated from multiple sources. if i have a way of makin the fan ran non stop. how to wire up an electric fan. A6 / S6 (C5 Platform) Discussion - Main Radiator Fan Relay - I am stumped. Specified Condition. Fan control relay (K26) will also supply battery voltage to timing control pump through normally closed contacts of the auxiliary water pump relay (K22). For additional information, refer to Hydraulic Cooling Fan System Filling and Bleeding in this section. A successful test demonstrates that the power supply to both cooling fans is good and that both fans and the cooling fan relay are working properly. » Subscribe: http://youtube. Your radiator fan relay is located on the right hand side, the middle of the 3 relays in this section of your main engine bay fusebox. Use a digital multimeter (DMM) to test the resistance between each pole of the relay and the corresponding NC and NO contacts for that pole. By activating I specifically mean allowing voltage to pass thru' the relay (internally) and on its way to the component that needs to activate (fuel pump, cooling fan relay, A/C compressor, etc. In a radiator fan this activation circuit is usually by a temperature switch or from the PCM. and as you mentioned, what about circuit breaker 17? how can i test this relay, and the circuit breaker? so basically the high speed wont run if the low speed relay is bad because the. On applications that have variable fan speed, the engine may also overheat if fan speed fails to increase when additional cooling is needed. where is cooling fan relay I'm having a problem with my 2000 beetle did timing belt yesterday. In low speed mode, the two fans are wired in series, making them run slow (each sees only 6 volts), but if there is an issue with a relay, or the driver from the FCM is pooched (can happen if an oops with the 25 cent fan mod is done by connecting +12 to the relay driver while it's enabled, and you wouldn't know) then neither will run. I have a 2004 Deville and am getting a P0481 code / Cooling fan Relay 2. This energizes the low speed fan relay coil, closes the relay contacts, and supplies battery positive voltage from the FAN 1 fuse through the cooling fan motor supply voltage circuit to the right cooling fan. this is normal is most cars. There is no typical relay in the electrical system, I believe. I have a Pi3 in a fairly enclosed environment, and I found that, even when my Pi was relatively idle (5% CPU usage) the CPU temp was averaging around 80C, which is close to the 85C where the Pi sta. Order Toyota Camry Relay - Radiator Cooling Fan Motor online today. First I disconnected the 2 fan relay switches under the under-hood-fuse-box and was puzzled as to why the fans didn't go out. Engine running hot. You can also find other images like wiring diagram, parts diagram, replacement parts, electrical diagram, repair manuals, engine diagram, engine scheme, wiring harness, fuse box, vacuum diagram, timing belt, timing chain, brakes diagram. CLEAR the DTCs. Only at www. And the ground side of the relay can be generated from multiple sources. A relay is an electrical switch which is activated by another electrical circuit. One way to test the 3rd or High Speed operation of the radiator fan, is to "temporarily" remove the 2nd speed fan relay from the fuse/relay box under the hood, and let the. Test the Relay Contacts with an Ohmmeter. In low speed mode, the two fans are wired in series, making them run slow (each sees only 6 volts), but if there is an issue with a relay, or the driver from the FCM is pooched (can happen if an oops with the 25 cent fan mod is done by connecting +12 to the relay driver while it's enabled, and you wouldn't know) then neither will run. Fan control relay (K26) will also supply battery voltage to timing control pump through normally closed contacts of the auxiliary water pump relay (K22). Connect the black wire from the secondary fan plug to the black 10 gauge wire using a yellow butt connector. Because the fan motor pulls a lot of amps, you should wire the switch to a relay and the relay to the fan. 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. Check the relay for the fans: (MOST LIKELY FAILURE AND MOST DIFFICULT) If the Radiator fan control module has failed you will need to replace it with a new one there is no way to repair it. Indeed, Relay #3 was an aftermarket part that had failed. They operate, fit and look just like the origina. I have a 2004 Deville and am getting a P0481 code / Cooling fan Relay 2. Power from fuse 15 provides power to the Radiator Fan High Relay. Fan control relay (K26) supplies battery voltage to engine cooling fan through the engine cooling fan resistor. You may have to register before you can post: click the register link above to proceed. The Relay is quality-engineered to provide power to the Radiator Fan, controlling the fan's speed and cooling. Replacing a Radiator Fan Relay in a 2008 PT Cruiser. No need to turn on the ignition. Next would be to check the condenser tubing, a good place to start is to make sure the condenser coils are not built up with dust!! Make sure the condenser fan motor is also working properly. The cooling fan relays are on the radiator support below and between the cooling fans. Here is the quickest way to check fuses and relays for the radiator fans if the fans are good. For low fan speed, the ECM grounds the low-speed relay coil, closing the relay contacts. As a general guide, use 12AWG wire with 30A fuses and relays or 10AWG wire with 50A fuses and relays. If they are good, check Cooling Fan Relay #1. TEST 1: Checking The Radiator Fan Relay Power Circuits. Fan testing. The cooling sensor has been replaced and double checked, the thermostat is new. now it staying on for 10 mins is not a fan issue, but more of a heating issue with the engine. You can test things by grounding, one at a time, the relay pins associated with the yellow and the yellow/white wires that go to the center of the cooling fan relay. If the motor works, the next things to check are the relay, fuses and wiring. Hill Hi Guys, I have had a 1993 Honda Accord (Wagon) brought to me with a Cooling Fan Issue. Which should I apply 12v and ov to? Is the temp switch a straight switch once temp. If you still want to test the coolant temp sensor (mute I hope) measure the resistance across the pins on the sensor with the engine cold then hot. A fan failure, or a failure of the fan relay or control circuit is bad news because it can allow the engine to overheat. Hot should read 700 to 1000 ohms. All NC contacts should read 0 ohms to the corresponding pole. If there's voltage running from the relay to the fan, the problem is that your fan is faulty and needs to be replaced. There are two methods to wire the relay, one with manual control and one with automated control. It couldn't handle the current of the fan motors and would open up, disabling the fans. Bleed the air out first of cooling system and then check if fans come on. HOW TO TEST/CHECK A RADIATOR FAN. its a 91 ls400. In my Mach since I race I actually spiced into the hi speed fan wire at the PCM and grounded it to a switch so in between rounds with motor off I can run the fan. 2 relay block. If you own a Chrysler minivan and it's overheating because the radiator fan won't turn on, it may be a bad radiator fan relay. Check the relay for the fans: (MOST LIKELY FAILURE AND MOST DIFFICULT) If the Radiator fan control module has failed you will need to replace it with a new one there is no way to repair it. A relay kit, our part number CCFKRL, will include everything you need to properly wire up your electric cooling fans, with the exception of additional wiring needed to complete all of the circuits. Caution: A separate switch can be useful but is usually used as an override to some sort of temperature control. See procedure for testing the cooling fan relay. You should typically find an ohm value of approximately 50 to 120 ohms. If necessary, add fluid. You may have to register before you can post: click the register link above to proceed. The fan relay is what controls the power to the cooling fans so if there is an issue with it, the fan will be affected. Swap this relay with another in the fuse box (note which is the target relay used for the swap) and see if that resolves the issue. Run the black 10 gauge wire from the fan over to the ground used in step nine. i was wondering if anyone can help me to find out if my radiator fan is working. Check for voltage on the load side of the relay, check the leads to the fan, test the fan windings and the capacitor, and check to see if something is stuck in the blower and stopping it from turning. - The vehicle speed is less than 38 MPH. These are the low speed fan and the high speed fan operating modes. Install cooling fan relay. If so, PartRequest. The other way to test the cooling fan circuit is a direct wire jumper on the fan relay socket terminals. The relay I am using is a 5 post relay with 86 going to the fuse pa. Grounding both wires should give you medium fan speed. Also there's Fan Fuse #20 which powers the relay. While inspecting the blower fan, I found a manual circulation switch on the bottom of the Electrical Comfort Center inside the furnace and switched it on and the blower fan started. TESTING FAN SWITCH W/ A SODA CAN. Replace the high speed relay. If they are good pull the cooling fan relays out. To check which way the air goes, just put your hand in front of the fan to make sure the air is blowing through the radiator. If you needed to control a very high voltage circuit with a 12 volt controller, you could use a relay. Wouldn't ya know it, the CCRM is a dealer only item and runs about $190. Saturn Cooling Fan Relay Location » This is images about saturn cooling fan relay location posted by Brenda Botha in Saturn category on Oct 12, 2019. check the sensor to the fans and also check your coolant levels. If the relay does click, probe the output terminal to the fan motor with a grounded test light. How to wire an electric fan with an AC trinary switch. (This test will not activate the A/C Condenser Fan. com, the official website for Car Craft. It is time to make a decision. Auto Service Costs Find the prices for normal auto service activities including alignment, tuneup, timing belt replacement and more. 9 sri vectra cooling fan doesnt seem to cut in, testing radiator fan using opcom, vectra radiator fan issues, cooling fan on a vauxhall vectra 2003, how to test cooling fan vectra c , vectra c cooling fan relay location, opel vectra c 1. I have tested the fan motor [its runs], checked the relay switch and fuse under the hood [they were replaced], changed the temperature sensor and thermostat and still nothing. If the motor tests OK, check the cooling fan thermo switch, located at the bottom of the radiator on the driver's side. If the motor works, the next things to check are the relay, fuses and wiring. USING MARKS. There are two methods to wire the relay, one with manual control and one with automated control. The fan should come on, at high speed. One way to test the 3rd or High Speed operation of the radiator fan, is to "temporarily" remove the 2nd speed fan relay from the fuse/relay box under the hood, and let the. if i have a way of makin the fan ran non stop. 2001-2006 Chrysler Sebring Overheating-Fan Will Not Come On-How to Replace a Bad Fan Relay by John Mueller I had a friend who reported his Chrysler Sebring overheating because the fan was not coming on. They should spin immediately. It doesn't look like the main fuse box has a relay for the cooling fan, but from what I'm reading there is a relay controlling the fan located somewhere else. Jeep has worked great up until about a month ago. 7l, Thank you very much for any help!. The cooling fan"expert" is here Probably, the low speed circuit has failed. Auto Service Costs Find the prices for normal auto service activities including alignment, tuneup, timing belt replacement and more. 87 terminals when power and ground are connected to the No. Connect the red wire from the secondary fan plug to the red wire hang-ing from terminal #87 on the relay using the yellow butt connector. cooling fan components are , fans, fan relay , and temp sensor. 2 fan relay. If this still fails to turn on the fan, I suggest you turn off the engine for now and consider troubleshooting other aspects of the cooling fan electrical system including the low speed fan relay. 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. Complications during the Cooling Fan Circuit The standard electric cooling fan circuit involves a temperature sensor, a relay, a manage module as well as the fan motor. Note the symptoms. Best Answer: Yeah you know it, temperature sensor or fan relay likely. One will be hot and the other will go to the fan motor. Fan control relay (K26) supplies battery voltage to engine cooling fan through the engine cooling fan resistor. sensor, this sends info to the computer to turn on the cooling fan. PCM connector disconnected. If the fan is not operating, check the power connector at the base of the fan and make sure it's seated. If they do then you have a bad A/C pressure switch or wiring from it to the PCM. Disconnect the cooling fan clutch connector. From the switch run a wire to the #85 terminal on the relay. I suspect the double pole double throw Plug-In Relay, but not sure how-to test it to verify. Fan never runs. This sounds like the start relay on the compressor is bad. There are two methods to wire the relay, one with manual control and one with automated control. The issue presented itself with a check engine light and the radiator cooling fan not turning on. If there is only the one fan then the engine cooling fan relay would be correct. Open up the frunk and watch for the cooling fans to come on (this is assuming of course you have already removed the frunk plastics). It is not showing any codes whatsoever. The relay is the component that fails most often, so be sure to test the relay as well as its power supply and ground connections. Be sure you don't confuse the Radiator Fan Relay and Radiator Fan Main Relay while doing the tests below. These are the low speed fan and the high speed fan operating modes. 2) Find the battery blower relay which is a few inches away from the battery cooling fan. Fuse Panel Layout Diagram Parts: blower motor, stop lamp, front wiper relay, front fog lamp, headlamp, Air Conditioner, trunk lid open relay, horn relay, ABS control system, ignition switch, starter relay, radiator fan relay, condenser fan relay, generator. If the fan once again operates after testing the temp switch, check for voltage at terminal two of the fan relay connector. Check power and ground at the fan connector. The cooling fan on my 2006 Fusion, 4 cyl, continues to run after the car is shut off. A bad air conditioning relay will only keep the fans from running when the ignition is on and the air conditioning is turned on. In a radiator fan this activation circuit is usually by a temperature switch or from the PCM. 106594 - KAEHLER - Air Conditioning Cooling Fan Relay - 9442933 This product is specific to particular car models. The cooling fan relay takes the low voltage signal and internally switches the relay "on" to allow battery voltage to be supplied to the radiator cooling fan. 4 Your multimeter should. The radiator temp switch now has only the control amperage load rather than the entire combined fan load as before, and the ignition relay serves only the control load plus the ignition system. Dodge Caravan - 2008 Grand Caravan Radiator Fan Relay - I have searched through the forum and taken a few things apart on the van but have not been able to find the radiator fan relay on my wife's 2008 Grand Caravan SXT (3. Item condition is displayed in photos. See the pictures below for the exact location. Complications during the Cooling Fan Circuit The standard electric cooling fan circuit involves a temperature sensor, a relay, a manage module as well as the fan motor. 7/11 The relays we used on the Chevelle are standard Bosch ISO models that can be used in a variety of applications. I've connected the fan directly to the battery and it spins perfectly and the fuses are all perfect. If you needed to control a very high voltage circuit with a 12 volt controller, you could use a relay. You can also try starting the vehicle with the AC switch on and check the power side of the harness to see if it gives you ~12v. If you are searching to test New Radiator Cooling Fan Relay for Dodge Neon L4 34201631 4707286AF 4897034AA 4707286AD price. Without these components your car overheat and not run. If the relay fails, it will be unable to supply power to the fans, and as a result they. Problems in the Cooling Fan Circuit. On 850 and 960, cooling fan is operated by a relay, either in response to engine temperature signal received by Motronic control unit or directly by pressure switches mounted in A/C high pressure line. There's an A/C compressor clutch relay which is #44 in the same relay block which is powered by 10A A/C fuse #30. Test for current with a test lamp or circuit tester at the 'live' lead to the relay — again with the ignition switched on. Back story: 2016 jeep renegade purchased new from the dealership 3 years ago. com, the official website for Car Craft. your cooling fans will still run after your car is off to cool down the radiator which is hot from you driving. If so, retry the test jumpering from terminal 30 to 87a. In a radiator fan this activation circuit is usually by a temperature switch or from the PCM. By using a lower voltage signal to control the relay, there is less stress on the rest of the wiring and charging system. Does the test lamp illuminate on and off when either the low or high speed cooling fan output is commanded on and off? Yes No INSTALL a new LFC relay. The Haynes manual I have indicates the radiator fan relay as a potential culprit for my cooling fans not working. The factory replaced it with a wire jumper per bulletin ST-06-9/82, but now a fused jumper P/N 111102 is most commonly used. Cooling fan control Relay problem If this is your first visit, be sure to check out the FAQ by clicking the link above. im waiting to see if it starts acting up again hopefully not. And the ground side of the relay can be generated from multiple sources. 10 Q or higher (when battery voltage is applied to terminals 1 and 2). If it does, the fan motor is OK. nancy, "The Fan Control Relay is bolted beneath the battery tray. In all cases below, I tested the radiator fan by turning on the air conditioning (thus forcing the cooling fans to run) and also for it to come up to a high temperature coming close to. 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. If your fan relay does not have markings on it, you will have to consult the cooling fan wiring diagram found in your vehicle. Because the radiator fan requires a high level of current, a relay, managed by the logic module, turns the fan on and off. Test the fan relay resistance (it should be 30-70 ohms). 1) Find the 10A BATT FAN fuse which is located in the main relay/fuse box next to the inverter. (This was also confirmed by turning on the AC. Which should I apply 12v and ov to? Is the temp switch a straight switch once temp. 86 terminals. unplug the fan connector and test for voltage on the two large wires. Shop safely with us online or call 888-844-3393 and buy the quality part your car or truck needs today. If you still want to test the coolant temp sensor (mute I hope) measure the resistance across the pins on the sensor with the engine cold then hot. if i have a way of makin the fan ran non stop. Report your findings. A fan failure, or a failure of the fan relay or control circuit is bad news because it can allow the engine to overheat. Reconnect the engine coolant temperature sensor connector. The fan will turn in either direction depending on which of the two wires the power is supplied to. Find helpful customer reviews and review ratings for Dorman 902-303 Radiator Fan Relay Kit at Amazon. But if you go looking for it, be careful, it is very close to one of the impact sensors for the airbags. If your fan relay does not have markings on it, you will have to consult the cooling fan wiring diagram found in your vehicle. Saturn Cooling Fan Relay Location » This is images about saturn cooling fan relay location posted by Brenda Botha in Saturn category on Oct 12, 2019. 2000-2005 Chevy Impala Cooling Fan Problem - Youtube, size: 800 x 600 px, source: i. 10 Q or higher (when battery voltage is applied to terminals 1 and 2). This video will show you how to find and fix that part. I've read that you can test the auxiliary fan relay by jumping 2 of the terminals on the plug for the coolant temperature sensor. I need someone to check their Fan Control Relay, preferably in a 2007 Odyssey EX-L. Free Same Day Store Pickup. Re: Punto MK2 Radiator Fan Hi, the sensor controls the fan, the resistor is to do with the relays. The fan has a final stage resistor built in so it gets a pwm signal for activation and speed. 2011 Ford Edge Junction Relay Fuse Box Diagram. Besides the coil terminals, you then can check to see if the the other terminals are good as well. Step 12 - Once the test light is set up connect each end to terminals 86 and 85. The whole relay/harness holder can be lifted up to remove it from the ECU box as shown here: After you remove the relays you can remove the harnesses if you wish to make cleaning them easier. Fuse and relay layout label affixed to the inside surface of the PDC cover for cooling fan relay identification and location. electric cooling fan All vehicles with are equipped with an electronic cooling fan. Report your findings. Any other suggestions would be greatly appreciated. Cooling fan(s) were not operating as normal and thus a/c would not cool (due to pressure rise in system due to heat build up in condensor) at idle / stop. I have fault code P1843 triggered, I have checked the cooling fan slow and medium speeds, I wish to replace or interchange the relay which controls the fast speed for the cooling fan. Non-functional cooling fans are another common symptom of a potential problem with the cooling fan relay. It's mounted to the inside of the frame rail on the driver's side, near the radiator. The 40A fuse (fuse 4) located in the power distribution center in the engine compartment is good. I've connected the fan directly to the battery and it spins perfectly and the fuses are all perfect. Bypass coolant temp sensor, relay and computer HOW TO TEST/CHECK A RADIATOR FAN. There is no typical relay in the electrical system, I believe. The radiator fan switch relay may not be supplying power to the fan. 10 Q or higher (when battery voltage is applied to terminals 1 and 2). where is cooling fan relay I'm having a problem with my 2000 beetle did timing belt yesterday. Then test for incoming voltage at the terminal with your digital multimeter (DMM). Yes, I really need help. Two (or more) small fans at radiator--use only one relay for each fan. 6 LX 52 plate (2003) hasn't worked for a while now. 2000-2005 Chevy Impala Cooling Fan Problem - Youtube, size: 800 x 600 px, source: i. check the coolant temp. Swap this relay with another in the fuse box (note which is the target relay used for the swap) and see if that resolves the issue. I believe the middle relay is the cooling fan relay. The aircon guys only discovered as it wasn't cooling as much as it ought. (This test will not activate the A/C Condenser Fan. Have read quite a bit here about cooling fan problems and I think my Z may be a victim. The compressor relay can be accessed by removing the terminal cover box. Fan control relay (K26) will also supply battery voltage to timing control pump through normally closed contacts of the auxiliary water pump relay (K22). i was wondering if anyone can help me to find out if my radiator fan is working. It may cause the fan to not function at all or to be on all the time; A wiring issue. The Relay is quality-engineered to provide power to the Radiator Fan, controlling the fan's speed and cooling. This is a good test to determine that the relay and fan motor are working. Jump the radiator fan motor and ensure it runs. If you are searching to test New Radiator Cooling Fan Relay for Dodge Neon L4 34201631 4707286AF 4897034AA 4707286AD price. Radiator Cooling Fan Motor Relay: Diagnostic Aids. The fan will run in low speed for a few seconds, every 60 seconds. The fan should come on, at high speed. TEST 1: Checking The Radiator Fan Relay Power Circuits. If it does, the fan motor is OK. While inspecting the blower fan, I found a manual circulation switch on the bottom of the Electrical Comfort Center inside the furnace and switched it on and the blower fan started. This item is incredibly nice product. For example, when coolant temperature changes, the thermo switch reports this change to the computer through a voltage signal, which the computer or module uses to activate the cooling fan through a fan relay(s). See the pictures below for the exact location. If your fan relay does not have markings on it, you will have to consult the cooling fan wiring diagram found in your vehicle service manual. Check power and ground at the fan connector. How To Test the Compressor Relay. - The A/C clutch requested. All NC contacts should read 0 ohms to the corresponding pole. OK so have a 2004 PT cruiser (with the lite turbo) - the radiator fan is relay actuated with 2 speeds. If you do not have an account but would like to check the status of an CHEVROLET > 2004 > CORVETTE > 5. i have searched all over the place and can't even find a fuse and relay diagram. Step 12 - Once the test light is set up connect each end to terminals 86 and 85. So I disconnected the battery and the next day did a few test on my own. Front-wheel drive cars have electric fans because the engine is usually mounted transversely, meaning the output of the engine points toward the side of the car. Order Toyota Camry Relay - Radiator Cooling Fan Motor online today. In case the cooling fan won't stop running and it's already draining your battery, then you'd better check that auto part. The relay is the component that fails most often, so be sure to test the relay as well as its power supply and ground connections. Specified Condition. Hi all, Does anyone know how to test the radiator fan? There's 2 large pins and 2 smaller pins on the radiator when you disconnect the connector from the. Test the fan relay resistance (it should be 30-70 ohms). With the relay removed from the fuse box, the multimeter set to measure DC voltage and the switch in the cab activated, first check to see if there are 12 volts at the 85 position in the fuse box where the relay plugs in (or wherever the relay is located). Where is the Radiator Fan Relay on a 2004 Jeep Grand Cherokee. It couldn't handle the current of the fan motors and would open up, disabling the fans. The fuses inside of the radiator fan must be in good working order to make sure that the engine is able to stay cool. Report your findings. There is one more thing left to check, the cooling fan relay. A : Cooling fan relay 1 1. If i connect the CEL readout- connector (black one under steering column) and the green T-shaped connector next to it (its for long test run) the cooling fan will turn it self on and off at interfals of a few seconds. The compressor relay can be accessed by removing the terminal cover box. TEST 1: Checking The Radiator Fan Relay Power Circuits. If they don't spin disconnect the fan relay connector (mounted behind the grill in front of the radiator) and jumper pins 1 and 2 together (orange/red tracer to dark blue/dark green tracer wires). Remove the fuse and test continuity using an ohmmeter. Item condition is displayed in photos. Especially since I had the head gaskets done on my 2000 STS 3 year's ago, and my 2001 DeVille. 4 Your multimeter should. They are two terminal connectors, but there is only one wire in each. Swap this relay with another in the fuse box (note which is the target relay used for the swap) and see if that resolves the issue. The radiator switching system typically consists of only four parts: the switch, the fan, the relay and a fuse, so you must diagnose where the problem is. They are all in Relay Box A which is attached to the upper drivers side corner of the radiator, next to the battery and are. * If the fan does not run, check for 12-volts at terminal 30 in the relay socket. The first part of the installation is to install the electric fan to your radiator, and remove the mechanical fan. Check the cooling fan relay: After all of that, the fan may still refuse to work. The relay is the component that fails most often, so be sure to test the relay as well as its power supply and ground connections. It has ~26k miles and started overheating when i turned on the a/c. Bleed the air out first of cooling system and then check if fans come on. If the circulating fan runs off of the same relay and it is operating, then the problem must be the heating element. Disconnect the radiator fan motor connector and attach jump leads to the battery. When the temp sensor gets a ground, it sends this ground to the latch part of the relay, the latch pulls in, thus giving the fan a ground, and it comes on. Step 1 - A relay is used to control (switch) a high amperage electrical circuit with a low amperage one, for example a radiator fan can pull up to 25 amps when in use, which would burn the computer circuit that controls it, a relay is used to bridge this circuit to prevent electrical damage. Next would be to check the condenser tubing, a good place to start is to make sure the condenser coils are not built up with dust!! Make sure the condenser fan motor is also working properly. KF5 : CHECK THE LFC CIRCUIT FOR A SHORT TO VOLTAGE IN THE HARNESS Remove the test lamp. 2 fan relay. This is a good test to determine that the relay and fan motor are working. Report your findings. The fan will run in low speed for a few seconds, every 60 seconds. Also check fuse M34. Cooling Fan Relay Products It is the cooling fan relay that switches on the fan and turns it off to keep the engine running at a stable temperature. Details about 2x 16'' Electric Radiator Cooling Fan + 1x Thermostat Wiring Switch Relay Kit 2x 16'' Electric Radiator Cooling Fan + 1x Thermostat Wiring Switch Relay Kit Item Information. Where is it located so I can check it? Also, my blower motor resistor seems to be going bad since the 2nd speed on my AC selector switch doesn't work. Free Same Day Store Pickup. So I disconnected the battery and the next day did a few test on my own. When terminals 85 and 86 are connected to a 12-volt supply, such as the car battery, a coil inside the relay creates a magnetic field. AR-73 70 Amp. Only a few minutes for the installation and your cooling fan will come on when the engine reaches the preset temperature of the thermostatic switch mounted in the engine head or when the a/c is turned on. The situation right here may be the cooling fan circuit employs a radio frequency filter mounted on radiator fan shroud. at this time. The cooling sensor has been replaced and double checked, the thermostat is new. Check to see if all the wires to the fan are properly connected and in working order; Something wrong with the fan motor. check for obstruction PS pump to make it's spinning freely, if yes unplug and apply 12 volts + ground to test fan. Pontiac-Maintenance & Repair. Now, the most common. Does anyone know where the Cooling/Radiator Fan relay is located on a 2009 Escape? I went to the dealer and they could locate a picture of the part on their computer, however they could not show me exactly WHERE that part is located on the vehicle. Specified Condition.