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, resulting in higher steering efforts during low-speed maneuvering.

The presence of DTC U0100:00 will prevent the active park assist system (if equipped) from activating. If set during an active park assist event, the event will be terminated and the active park assist system will deactivate. Also, if equipped, the lane keep assist function is disabled when DTC U0100:00 is present. The driver may also experience the vehicle pulling to the left or right during acceleration.