Component Location
DTC Description

If there is no message from TCU to ECM through external CAN line over 500 ms, PCU sets DTC U0101.

DTC Detecting Condition

Item

Detecting Condition

Possible Cause

DTC Strategy

● CAN communication status check

● Poor connection

● PCM

Enable Conditions

● TCU is not coming via internal CAN

Threshold Value

● No message time from TCU via external CAN ＞500ms

Diagnostic Time

● Continuous

MIL ON Condition

● 5 sec

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