The ecu has control over the fuel pump relay, the ecu energizes the relay for a few seconds when the ecu first powers up to presurize the system and then it will keep the relay on as long as it is recieving a signal from the cas (ie it thinks the car is running). So by doing what Goat Blower suggested you are just telling the ecu the car is running when it really isn't so it should, assuming the cas is working correctly, keep the fuel pump turned on, pulse the injectors, and fire the coils without having to actually be cranking the engine
Edit: Also, make sure you turn it clockwise since thats the way the engine rotates and i'm not sure how the ecu would handle the signals if they were running in the reverse direction...