The power steering in my 01 Prius doesn’t work at all.I replacing the steering rack and the control module with used ones and that didn’t help at all.I got a 1521 trouble code,motor curcuit malfuction and a 1552`PIG power source circuit.I am thinking I should replace the module, if I do will the new module be compatable with the original steering rack? Thank you very much for your time.nick