Diagnostic Aids

During the ignition cycle the DTC initially sets, the PSCM either enters manual mode, reduced assist mode or steering assist is gradually reduced until the PSCM enters manual mode.

During the next ignition cycle after the DTC sets, if the PSCM is not already in manual mode the PSCM removes steering assist and enters manual mode. The module also transmits an invalid steering angle message over the HS-CAN and sends a message to the IPC to display the STEERING ASSIST FULT SERVICE REQUIRED in the message center.