Diagnostic Aids

DTC U0100:00 indicates that the PCM cannot communicate over the HS-CAN bus, this could be due to a DTC being set in the PCM or there is a circuit fault in the HS-CAN bus. Do not install a new PSCM as part of the repair for a PSCM DTC U0100:00.

Initially steering assist will remain unaffected, but once the PSCM has detected missing messages from the PCM 3 times, steering assist will be reduced to a preset level.

The PSCM will send a message to the IPC to display the POWER STEERING ASSIST FAULT message in the message center.