DianaChay

Changed out ECU and now the power steering is out. Was fine before the ECU change. Alternator is good and checked all fuses and are good. Any help in diagnosing would be appreciated! Oh, almost forgot to mention I read on some forums a calibration of the ECU was suggested, but is it absolutely necessary? And would/could this be the cause of the PS going out? The ECU I put in was from another IS250. Thanks!