If the fan switch relay is giving off the appropriate readings and is in working condition, move on to the next step. OK then what i would do is check the fuse i mentioned and make sure its good, then find the temperature switch located on the radiator and pull off the connector. For High Speed - Power from fuse 12 provides power to the Radiator Fan Control Relay, power from fuse 15 provides power to the Radiator Fan High Relay. No. Based on PCM operating parameters received over the CAN-C BUS the TIPM turns on the Radiator Fan Control Relay, which exits the TIPM and powers the right fan motor. @alexander31 The Fan Control Relay is bolted beneath the battery tray. 1, which results in low speed operation of the radiator fan. When the engine coolant warms up sufficiently, this switch opens and diverts electric current through the relay coil of Fan Relay No. Fuse. ... thought is the sensor on top but later realised that sensor is for water pump so my last guess is the sensor below the radiator which controls the fan. Turn off your ceiling fan and locate the direction switch on the motor housing. A faulty coolant temperature sensor may result in a fan not being properly used, which may cause the engine to overheat. There may be 2 sending units located there with the single terminal sending unit being for the temperature gauge on the dash. 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. 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. Access is pretty tight here, but it is possible to remove the switch. Hint: It is normal for the cooling fan to sometimes rotate when the ignition switch is turned from acc to on. No. The temperature sensor is located to the right of the valve cover, facing the engine compartment. System diagram. prod: 1) ON the AC then at the connector of the aux fan look for the wire that has the positive supply. Fuse. Water Temp. Also, my blower motor resistor seems to be going bad since the 2nd speed on my AC selector switch doesn't work. The lower absorber coil in some applications may get too hot, therefore the ARP fan sensor can be clamped to the second coil from the bottom if this is the case. Alternately, a refrigerant pressure switch is also located within the same wire, in order to open and achieve the same result. The Fan Control Module is on the lower driver side of the radiator... Or it can be located on the driver side lower frame rail." Where is the cooling fan relay on a 1996 Mercury Tracer wagon? The thermo switch (also called the cooling fan switch) sends a signal to the cooling fan, so the fan turns on if the coolant gets too hot. On-vehicle inspection. AM2 7.5A. ALT 120A. The A/C relay is in the center next to the radiator fan relay, and the horn is the one on the left end in the row closer to you. Step 2 – Check the thermo switch. Hyundai overheats If the radiator fan relay is activated and the ECM detects that the fan can’t provide adequate cooling, it will activate the condenser fan relay to provide supplemental cooling. The CCRM (constant control relay module) which operates the fan is located near the drivers side shock tower. You can unhook the wires to the fan, and hot wire it to test the fan motor, and then follow the wires from the fan back to the relay, and from the relay back to the thermo-switch (temp sending unit) which is usually located in the top portion of the engine, and most of the time around the water outlet that houses the thermostat. It's easiest to use a … AM2 7.5A. Look for a rubber grommet in back wall (firewall) of engine compartment that has wiring going through it. I know where all the fuses and relays are, and the diode. Now turn your fan back on and enjoy. Our virtual experts can diagnose your … The relay switch should be labeled as such. One of the most important systems to monitor is the cooling system, which includes the radiator, water pump, radiator fan, coolant lines, and overflow tank. Last Updated on Tue, 17 Mar 2020 | Toyota MR2 MK2 1991 SW20. Part number is: 141-951-253-B. 1984 COOLING FAN SWITCH INSTALLATION. The cooling fan relay switch can be located on the back of the cooling fan motor. The thermostatic switch at the bottom of the radiator operates this relay. Next you have 4 relays your engine compartment box. The cooling fan relay is the relay that controls the engine’s cooling fans. Let's Get It Fixed! my problem is I don't know where they are located on the car. The radiator fan switch is located on the lower right hand side of the radiator on the engine bay side (looking towards rear of car). Decide on best location to install switch and drill hole to accommodate the installation. Where is it located so I can check it? The 1984 Corvette has a standalone cooling fan control circuit. Location Of Radiator Cooling Fan Components. Initiation is from the coolant temp sensor (B11/4) but fan speed variation is managed within M4/7. The cooling fan relay is usually located in the phytyl and the centre of the relay or mounted in the electric fan behind the radiator. Guess you can follow the radiator piping and it should lead you to thermostat location and the fan switch should be somewhere nearby. A coolant fan switch is a small and very simple switch comprised of typically two wires. Water Temp. olds 88: i have a 92 olds 88 royale the radiator fans do not i have a 92 olds 88 royale the radiator fans do not work. The cooling fan relay switch can be located on the back of the cooling fan motor. All I need to know is WHERE is the cooling fan (radiator fan) Switch is located on a 2006 Pontiac grand prix V6??? NOT the fan switch as I had been told by someone else. Fan Main Relay ("FAN MAIN") Cooling Fan Relay. Both fans ground receive ground at G109 located on the right radiator support. The cooling fan switch is located in the passenger side cylinder head between cylinders number six and eight spark plugs. . That's a known failure item when the fans are inoperative. You also have a temp sensor that supplys info to your pcm, that is located just by the oil fill cap next to two pipes. Use a small screwdriver to press the tab on the electrical connector (green arrow) and pull it off the switch… The switch is connected directly to the cooling fan relay without any engine computer intervention. The cooling fan control module is located at the front left of the engine compartment next to the radiator. HiCustomerthis is lostrider, the electric cooling fan relay is in the CCRM, thats the constant control relay module located in the engine compartment,by the air filter housing, That relay is not replaceable unless you replace the CCRM, here is the wiring diagram for the module and its location… The Norcold fan sensor/switch can be attached to the absorber coil with a typical hose clamp. It is protected by fuse f5 (125A) located in Front pre-fusebox F32. Check that the cooling fan stops. The coolant fan switch is the located in lower part of the radiator by the compressor, some other Camry's the put it by the other temp switch by the head, between the air box and the cylinder head. This switch is configured to work based upon the temperature of the engine. The other 3 do. Make sure your fan has come to a complete stop before flipping the direction switch in the opposite direction. The relay switch should be labeled as such. relays is to your right, and the fuses are to your left the radiator fan relay is the one on the right side end, in the row farther from you. Check/replace the radiator fan relay, which is usually located in the under hood fuse/relay box. Fan Main Relay ("FAN MAIN") Cooling Fan Relay. Also - check the fan motor wiring connector to make sure it is not melted or damaged in any way. The electric suction fan (engine & a/c) with integrated control (M4/7) is driven from ME-SFI control module [ECU] N3/10. Cooling Fan Switch 1 Answer. The cooling fan is turned off and on as needed by the engine's control computer based upon information from the coolant temperature sensor. ALT 120A. 1st fan to the left is the rad that controlled by thermo switch and the second fan is an aux fan and will only ON when AC is ON but as they says you can put a manual switch on it to be able for you to manually ON. Parts location. if the fans continue not to come on then you need to check for voltage at one of the two fans harnesses. Most cooling fans use electric motors that have a moderate to high current draw, and as a result are commonly controlled using relays. If the radiator fan runs all the time, the ECT Switch will likely show continuity below 189 degrees F. This situation will, also, require replacing the switch. Your Jeep Liberty‘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. Just disconnect the sensor and the computer activate the fans, connector usually is green. 1 Radiator Cooling Fan. This one is here, sometimes they are on the top of the motor housing. the fan switch and relays need to be checked. Switch. The first step in adding a switch to a radiator fan is to disconnect the battery's negative terminal. 1 Radiator Cooling Fan. The original is a 10 amp (as shown in Clymer manual) however the parts guy at the dealership told me that many of these were found to be under rated which makes sense because the fuse for the fan is a 20 amp and the relay is a 50 amp. There's a relay involved in the engine cooling fan circuit. Most modern vehicles use electric cooling fans to help pull air through the radiator so that it can keep the engine cool. Check cooling fan operation at low temperatures (below 94°c (201°f)) Turn the ignition switch on with the a/c switch off. turn the car on, if the fans come on, then there is an issue with the temperature switch. I'm not sure where this relay is located, but I'd try looking on the left inner front fender (iirc, there a few relays located here). 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