Pajero Sport 2003, 2.5td, 85KW - turbo solenoid, no signal

The computer controls the solenoid, so certain things have to be met before it turns it on. Engine temperature, throttle position, air temperature and so on. You may need to get a live data scan to see if the computer is actually turning the turbo solenoid on, could be a bad computer or even broken wiring, bad grounds, etc.

Tks man. I found the "-" wire in one of the ECU plugs and there is no signal on it....i suppose the ECU is dead

That could be true, the bad news here is how old it is, you will probably have a hard time finding one. However there are turbo control kits out there that can be put on in place of the stock system, the trick is getting them setup right. I suggest a good speed shop in your area, they can get the right stuff and help with the setup. Good Luck