DTC U0156-00: Communication Error With Connectivity Master Unit (CMU)

U0156:00 (VCM) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Communication error with connectivity master unit (CMU)
Detection condition	The vehicle control module (VCM) cannot receive CAN signal from connectivity master unit (CMU).
Fail-safe	(See DTC TABLE: ).
Possible cause	Malfunction in CAN communication line between connectivity master unit (CMU) and vehicle control module (VCM) 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