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DTC U0100: Lost Communication With Electronic Control Module (ECM)/Powertrain Control Module (Pcm) A

U0100 - LOST COMMUNICATION WITH ELECTRONIC CONTROL MODULE (ECM)/POWERTRAIN CONTROL MODULE (PCM) A

Description:  The transaxle control module (TCM) continuously monitors controller area network (CAN) for messages from the powertrain control module (PCM). This DTC sets when TCM stops receiving PCM messages for a set amount of time.
Possible Causes: 
  • CAN circuit
Diagnostic Aids:  Network DTC concerns occur during module-to-module communication. Refer to the MODULE COMMUNICATIONS NETWORK -- FUSION, MILAN & MKZ , Communication Network DTC Chart to continue diagnosis.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All Refer to the Description, Possible Causes and Diagnostic Aids for the DTC in table