When I start the engine and switch on A/C the magnet clutch kicks in for one second and then stops working.
There is enough pressure in the system, the pressure switch is working o.k.
If i bridge the switch it is the same. Magnet clutch kicks in, then stops.
So I think the rev sensor of the compressor is not working.
How can i check the sensor?
Is there a wiring diagramm of the system available (climatronic) ?