According to the FSM the SCREEM sends a secret key to the PCM which turns on the ignition. Expect the PCM could be reprogrammed to skip but have not looked into it. So answer is with the PCM and not the SCREEM. Am suprised no-one has done this. Should just need to skip a few bytes. Or there is a default code that can be used on the assembly line. Guess no one cares enough.