Unfortunally the problem is not solved, worst, I checked and another one came out.
Read this sequence, please.
I switched on the engine.
I started the AC, so everything was ok, the fan started to run at 2nd speed, so I turned off AC.
I wait until engine warm up, temperature near to 90°C, I connected the vag and I check those values, intake temp, cooling temp, air cond status.
So, I verify the fan until it start up.
First time it starts up at 98°C, more or less and stop at 84°C.
Well, I verify the same with AC on, temperature increased, after a while AC disconnect the clutch, but at the threeshold (98°C)
nothing happen to the fan, temperature continue to increase.
I disconnect the fan plug, I verify if voltage was present, yes it was.
I connected another time the fan, and immediatly fan running.
I did same operation several times, and I notice that at the threeshold , only "pushing" a while the fan, it starts running.
It seems that, with cold engine, 2nd speed it's ok, but at cold engine, fan has a problem to start by itself.
Any idea, please?