Dtc U0101 Lost Communication With Tcm

Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - 1VD-FTV ENGINE CONTROL

DESCRIPTION

INSPECTION PROCEDURE

CHECK DTC OUTPUT (IN ADDITION TO DTC P0101)

REPLACE ECM

CHECK IF DTC RECURS

DTC U0101 Lost Communication with TCM

DESCRIPTION

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

DTC CodeDTC Detection ConditionTrouble Area
U0101No communication with the ECM continues.ECM

INSPECTION PROCEDURE

1.CHECK DTC OUTPUT (IN ADDITION TO DTC P0101)

Connect the intelligent tester to the DLC3.

Turn the engine switch on (IG).

Turn the intelligent tester on.

Enter the following menus: Powertrain / ECT / Trouble Codes.

Read the DTCs using the tester.

Result
ResultProceed to
Only U0101 is outputA
U0101 and other DTCs are outputB
  • HINT:
  • If any other codes besides U0101 are output, perform troubleshooting for those DTCs first.
B
GO TO DTC CHART ()
A
2.REPLACE ECM

Replace the ECM ().

NEXT
3.CHECK IF DTC RECURS

Clear the DTC ().

Start the engine.

Read the DTCs using the tester.

Result
ResultProceed to
No DTC outputA
Other DTCs outputB
B
GO TO DTC CHART ()
A
END