No, that's not normal.
What is the RPM doing when this happens?
It sounds like the input trigger is getting stimulated by the electrical noise of the fuel pump.
What do you mean by what is the RPM doing? does the engine turn at the same time?
At normal condition everything seems fine, the engine does not turn ( there is no fuel in the engine ) at the fulepump prerun.
We discovered it by a little accident, the car didn´t start after staing one night at the garage. First thing was to check fuel pressure, OK, second thing spark. And when the spark plug was out and we turned the key... we saw the "thing". We changed the park plugs and the car started again, but the "thing" made me a little bit worried.
So I should chek input trigger signal grounds, are they normal and there at all.