U0001

3UZ-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: U0001: High Speed CAN Communication Bus

DTC U0001 - High Speed CAN Communication Bus

DESCRIPTION

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






MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS





TYPICAL MALFUNCTION THRESHOLDS





INSPECTION PROCEDURE

PROCEDURE

1. CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC U0001)
Result:






B -- GO TO RELEVANT DTC CHART
A -- REPLACE ECM