DTC U0001 High Speed CAN Communication Circuit: Description

The engine control unit and the transmission control unit are located inside the ECM (Included in HV control ECU). The engine control unit intercommunicates with the transmission control ECU with the Controller Area Network (CAN).

If there is a problem in this intercommunication, the ECM sets a DTC.

DTC DETECTION CONDITION CHART

DTC No.	DTC Detection Condition	Trouble Area
U0001	Following conditions are met for 2 seconds (1 trip detection logic): Ignition switch ON Battery voltage 10.5 V or more No intercommunication between engine control ECU and HV control ECU	HV control ECU