Circuit Description

The battery ECU receives information of the AC ECU, system main relay connection signals, etc. sent from the HV ECU, and stores DTC when an error is detected in the receives information.


DTC Detecting Condition

Trouble Area


No serial signals transmitted from HV ECU

• Communication bus line

Check DTC of other ECUs and see whether any communication error of the HV ECU is stored or not. If HV communication errors are stored in then one ECU, replace the HV ECU.

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