Diagnostic Aids
WARNING: This page is about a different car, the 2010 Mercury Milan, 2010 Lincoln MKZ, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
During the ignition cycle when the DTC was set the following will happen: steering assist will be reduced, the PSCM will transmit an invalid steering angle message over the HS-CAN bus and the module will also send a message to the IPC to display the SERVICE POWER STEERING message in the message center.
During the very next ignition cycle after the DTC was set the following will happen: the PSCM will remove steering assist and enter into a manual mode, the module will transmit an invalid steering angle message over the HS-CAN bus and the module will also send a message to the IPC to display the SERVICE POWER STEERING NOW message in the message center.