Diesel Data: Automotive Repair

U0101

DTC U0101 Lost Communication with TCM

DESCRIPTION


DTC Detection Condition:




Monitor Strategy:




Typical Enabling Conditions:




Typical Malfunction Thresholds:




The engine control unit and the transmission control unit are located inside the ECM. The engine control unit intercommunicates with the transmission control ECU through the Controller Area Network (CAN). If there is a problem in this intercommunication, the ECM sets a DTC.

Step 1:




INSPECTION PROCEDURE