This is the Common Issues for the Laptop Error. There is No any other  Method to See How Laptop Cooling Fan Working or not Properly. Some of third Party Software has, but it not Perfect 100% accurate.
I made this simple video for, i faced this Problem "How to Know my Laptop Cooling Fan Working or not"
First you need to take off cooling fan , after That Find the USB Cable. After That you Had to Cut The Opposite Side of the Cable.

Then you have to see the Red, Black, White and Green Wire. (most of USB Cable)

then enwrap Green and White Wire together and leave Black and Red Wire.

there has Black and Red Port in the Cooling Fan Cable and Connect it with USB cable Black and Red Wire as Video show