What are the symptoms of a bad radiator fan relay?
Symptoms Of A Bad Radiator Fan Relay. The Basics Of The Radiator Fan Relay. START HERE: The Radiator Fan Motor Relay Tests. TEST 1: Checking The Radiator Fan Relay Power Circuits. TEST 2: Bypassing The Radiator Fan Relay. TEST 3: Bypassing The Radiator Fan Switch. TEST 4: Bench Testing The Radiator Fan Relay. More Honda Accord Test Tutorials.
What to do if your radiator fan is not working?
My first check would be to see if the fan is working. Pull the electrical connector off of the T-Stat housing and the fan should kick on. If it doesn’t, check the wiring to the fan and see if it’s getting power (using same method). If the fan is good then go to the relay. In others words work backwards from the fan.
What happens when a cooling fan relay fails?
If the relay fails, it will be unable to supply power to the fans, and as a result they will not operate. This can lead to overheating, especially when the vehicle is at a stop, where there is no forward motion by the vehicle to pass air over the radiator. 3. Cooling fans stay on at all times
Is there a way to test a radiator fan?
You can test the electrical radiator fans by taking a wire from the car battery, unplug the radiator fan connector, and put 12v+ and ground into the connector. This is the fastest and easiest way to test your radiator fans. Because the radiator fan is often drawing so much power, there is often a relay that is powering the coolant fan.
My first check would be to see if the fan is working. Pull the electrical connector off of the T-Stat housing and the fan should kick on. If it doesn’t, check the wiring to the fan and see if it’s getting power (using same method). If the fan is good then go to the relay. In others words work backwards from the fan.
Where is the relay on a radiator fan?
The fan relay is often located in the engine bay’s fuse box, but the best way is to check your repair manual to find where it is located. Testing a 4 pin relay is often very straightforward. Remove the relay and give 12 volts to pin 30 and 85. Ground pin 86 and check if there is voltage coming out from pin 87.
You can test the electrical radiator fans by taking a wire from the car battery, unplug the radiator fan connector, and put 12v+ and ground into the connector. This is the fastest and easiest way to test your radiator fans. Because the radiator fan is often drawing so much power, there is often a relay that is powering the coolant fan.
How to test radiator fan module control box?
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