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Normal Operation and Fault Conditions

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With the ignition ON, the EPB module sends messages to the ABS module over the HS-CAN 2. If the ABS module does not receive these messages within the specified time frame, the ABS module sets DTCs. This can be due to a EPB module failure, a circuit failure on the network or an excessive load on the network. For information on the messages sent to the ABS module by the EPB module, refer to Anti-Lock Brake System (ABS) and Stability Control article Description and Operation. 

PPT SA - ABS MODULE DTC FAULT TRIGGER CONDITIONS

DTC Description Fault Trigger Conditions
U0128:00 Lost Communication With Park Brake Control Module: No Sub Type Information With the ignition ON, the EPB module sends messages to the ABS module over the HS-CAN2. If the ABS module does not receive these messages within the specified time frame, the module sets a DTC. This can be due to a EPB module failure, a circuit failure on the network or an excessive load on the network. For information on the messages sent to the ABS module by the EPB module, refer to Anti-Lock Brake System (ABS) and Stability Control article, Description and Operation.