Trouble Judgment

Check Conditions 

• IG1 voltage: 10 V or more

Judgment Criterion 

• The signals from the ECUs cannot communicate (bus off), and the microcomputer determines that there is a problem in the system.

Fail Safe, Back Up Function 

• The electric power steering-ECU illuminates the electric power steering warning display, and sets the DTC U0001 to limit assist operation.