Home

Mazdamanuals.com

DTC U2121:00 [DSC HU/CM]

DTC U2121:00 [DSC HU/CM]


 id040262012400


Outline

System malfunction location

Communication error with vehicle control module (VCM)

Detection condition
•  The DSC HU/CM cannot receive CAN signal from the vehicle control module (VCM).
Fail-safe
Refer to “DTC Table” and “Fail-safe Function Malfunction Contents Table”.(See DTC TABLE [DSC HU/CM (E)].)
Possible cause
•  Malfunction in CAN communication line between vehicle control module (VCM) and DSC HU/CM
System wiring diagram
Not applicable
Connector diagram
Not applicable


Diagnostic Procedure

•  Perform the malfunction diagnosis according to the troubleshooting procedure for the multiplex communication system.(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].)