DTC U0129-00: Can Communication System: Communication Error With Electronically Controlled Brake Unit

U0129: 00 (SGC2/DMCM (WITH MAZDA M HYBRID BOOST)) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	CAN communication system: Communication error with electronically controlled brake unit
Detection condition	The drive motor control module cannot receive CAN signal from the electronically controlled brake unit.
Fail-safe	Not applicable
Possible cause	Malfunction in CAN communication line between drive motor control module and electronically controlled brake unit NOTE: Perform the malfunction diagnosis according to the troubleshooting procedure for the multiplex communication system. (See MALFUNCTION DIAGNOSIS FLOW [CONTROLLER AREA NETWORK (CAN)] .)
Repeatability verification procedure	Not applicable
System wiring diagram	Not applicable