does anybody know the how to solve this problem?

 

Well, there's a lot of things that could be going wrong... you could have a short somewhere, some disconnected wired, bad temperature sensor, bad fans... the list goes on... have you tried any diagnostics yet?

 

Try jumping the thermoswitch with a paperclip. The switch, which looks like a plug) is located at the thermostat housing. This should be towards the right-side/right-rear portion of the engine (passenger side). Turn the car on and if the fan runs, then you need to replace that switch. If it still doesn't, you need to look at replacing the relay. Also check to see if the fuse, No. 57, is good.