BMW PWM electric fan bench testing, easy method
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- čas přidán 25. 08. 2024
- This is the easy method I use to bench test BMW electric radiator fan. Works with pretty much any electric radiator/aux 12v fan that uses a PWM signal to control it. You just need a cheap PWM signal generator from eBay or Amazon, a decent 12v power source like a battery or a jump box, and some wires or test leads.
Thank you! Couldn't figure out how to test my fan before replacing. New item for the toolbox.
Glad it helped! I could not find any good way to bench test this type of fan, so I decided to put my Rigmaster skills to work.
Coming from e46 owners group I’m the guy that’s having that dme issue no other codes but I wanted to come to this video seeing as I already have this installed by previous owner and if I ever have issues I’ll know of top how to do it can’t wait to learn brother ☝🏻
Hey. I got E87 (series 1) with N46B20B engine. My fan is working on very low RPM and it is not dependent on temperature or air conditioning. Sometimes it won't turn on at all. After connecting INPA and controlling it, it starts at maximum speed without a problem. Is it a problem with DME that it doesn't control this fan? It seems to me that after turning on the air conditioning, even though it only cools the condenser, it should spin much faster.
hello, my electric fan does not start when I press the air conditioner. the 20 fuse burns in 2 seconds. what could be the problem. my car is e38 from 1994. Thank you
Finally, now my AC condenser fan will be consistently working again. No need for a new car yippee
Thanks !!! 😊
❤
How can i bypass the signal wire? Thanks
As far as I know, you cannot. You need to "command" the fan with a PWM generator like the video, or using an ECU or other electronics. This method is by far the easiest if your ECU is not working properly or if you are using a PWM fan in a different application.