THere is a piece on the cAS that goes into the end of the cam. The cam roatates this piece. Just do it by hand. Looking at the small piece, you should rotate it clockwise, if it even matters. There is a notch in the small piece, and a dot on the housing. Line htem up when you resintall it, with the motor at TDC on cyl one. Or note the way it was when you took it out. Dont be afraid to write on it with a marker or something. THe key must be "on." You'll hear the stuff clicking, and the pump priming if the CAS and eCU are good.