It’s the fan motor that makes the radiator expensive. This is a test. No codes are present, water is flowing through radiator so pump is good but witout air from fan the car eventually displays engine temp high, drive moderatley , but fan never turns on.....thinking has to be the fan but need to be sure. Once the temperature reaches this cooling stage, the coolant fan will shut off. Fans should come on immediately at low with A/C switch engaged. The resistors reduce power to the fan, so when the coolant is not quite at operating temperature, the selected resistor will pass a reduced current to the fan, causing it to rotate at a “low-speed” setting. Use Code: DIYSAVE10 Online Ship-to-Home Orders Only. 10% OFF $75. This problem has apparently also surfaced in the GS. 2007 Brute Force 750. Test the relay terminals for power with the ignition key off (use the voltmeter). Fan will work by jumping straight from the battery or by jumping the two wires together that are plugged into the sensor on the radiator.According the my … So, do not worry if the fan doesn’t immediately start working. Bill. Check the online microfiche for part numbers. Thermostatically controlled motors do not work the fan until the engine coolant rises above normal operating temperature, and then switch off when it has cooled down again. Mark this terminal on … 1-24 of 230 Results. For more information about how to test a fan clutch, such as other signs to look for which indicate damage, read on. How do I test my radiator fan switch to make sure it turns on at the right temp? If anyone else needs to know, you just unplug the connector from the switch/sensor on the bottom of the radiator and use … If you can do this test, I can fruther help you troule shoot this circut. The inputs the computer uses to decide how fast to spin the fan are: Radiator outlet temperature Catalyst temperature (calculated temperature) Vehicle speed Battery voltage A/C pressure (calculated pressure) To troubleshoot: check computer for any set codes unplug the fan connector and test for voltage on the two large wires. Older Volvos had a separate water temperature sensor at the radiator. The coolant fan will continue to run until the engine temperature cools down to a specific predetermined level. If the fan clutch requires repair, take the vehicle to a qualified mechanic. The light green wire is what turns the relay off and on. Your car’s cooling fan, or radiator fan, plays an important job in keeping your engine cool. Connect the high amp clamp to PicoScope Channel B, zero the clamp before inserting into the fan power supply circuit. Visually check the fan if you don’t hear its noise. When cool air is produced in the car’s A/C system , the cooling fan module blows it into the car maintaining a fresh supply of … It was a git of a job. Fig. General E46 Forum Check also the Thermistor is working. Never re-use a grommet, but renew each time the switch is … Cooling Fan Switch - Radiator. The ECU signals the radiator fan to work at the precise time. Here is how to test if the fan is functioning properly: Unplug the radiator fan connector. FILTER RESULTS. In the above schematic the item number 5 is the Fan Motor Assembly part number 19030-MAA-023. If it does not, check the cooling fan relays and engine coolant temperature sensor, and then check for disconnection of the connector or a wire break between the cooling fan relay and engine coolant temperature sensor. Here’s how to tell if your cooling fan isn’t working, what you should do about it and what the problem might be. There will be one terminal that has power with the key off. You'll then hear medium for test 1 and high speed for test … The switch is located about 2/3 of the way down the end of the radiator. BRAND. Problem: '97 F650 Radiator Fan Motor apparently burned out. Radiator Fan Cost. I overheated at the beginning of the season, and finally almost am ready to get back on the road after a replacement engine swap.I thought my fan was faulty, but both it and the replacement I just got work fine. If you have a new fan switch then we can pretty much rule that out. It's not under "cooling system" or "troubleshooting", it's under "switches" page 19-10. The radiator is typically inaudible from the driver's seat, so a simple test to see whether it is working correctly, is to switch on the engine and allow it to idle for 45 minutes. Installed the fan motor switch/sensor tonight, ran it up to temp and the fan kicked on when the gauge was at about 60% hot, so the fix was successful, now I'm going to back-clean the radiator with a garden hose, put it back together and run it hard, see what happens. I am having the same problem. The coolant temperature fan switch/sensor at the bottom of the radiator is new and works as it should in another similar Camry (I switched it out to test). Now start the vehicle and operate the accessory switch, the test light should illuminate, if not the switch or circuit ground has shorted. Switch must be bad. A cooling fan module helps to maintain a constant supply of fresh air into the cabin of a car by controlling the blower that supplies the air. CRP/Rein (2) Duralast (177) Facet (34) Santech (8) URO (7) Valucraft (2) Show less. I now have a rocker switch in parallel to the temperature switch to act as a test/back-up. For a Cheap Fan Replacement See Flash's Fan Replacement FAQ. Battery out including the box, intercooler pipe off, map sensor disconnected, wiring moved and a deep 30mm socket from Halfords to loosen the switch. edit- the bike is an 05 Honda VTX 1800F. Watch this video to figure out how to diagnose problems with the cooling fan relay on a Chrysler. 1-24 of 230 Results. Check that the cooling fan stops. Run jumper wires between the connector's two electrical terminals. Answer: Make sure there’s proper outside air flow through the radiator or condenser (usually bugs clogging passages). The light green should be a ground. Electric radiator-fan motors are switched on either by the ignition switch - and run while the engine is working - or by a thermostatic switch. Thank you for the reply! Normal engine temperature is achieved within 30 minutes of idling, and within 45 minutes, sufficient heat should build within the cooling system to require additional cooling via the radiator. Now repeat tests 1 and 2 with the A/C switch engaged and blower motor at speed 1. Radiator Fan Coolant Switch: How do you test? This switch is configured to work based upon the temperature of the engine. Cooling Fan Switch - Radiator. Address 01: Engine (8E0 909 518 AF) 20:40:48 Group 134: Engine Cooling (Temperatures) 94.0°C Oil Temperature 27.0°C Ambient Temperature 45.0°C Intake Air Temperature (G42) 102.0°C Engine Outlet Temperature 20:40:48 Group 135: Engine Cooling (Fan Activation) 90.0°C Radiator Outlet Temperature 17.3 % Fan 1 Activation Duty Cycle 20:40:48 Group 137: Engine Cooling (Air Condition … Use manufacturer data to identify the cooling fan circuit functions. Other than buying a new fan at 275.00 there has to be a way to know if its bad I would hope. This is a DIY test with No T4 TESTBOOK required !! Filter. Any Ideas what could be causing this? If it stops working, your engine could overheat and be damaged. 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