NEXON 3.0 EV DTC Troubleshooting Document for VCU Version: 2.0 Date: 22-Sep-2023 Copyright © TATA MOTORS Ltd. This document must not be used in anyway, such as copying and redistributing to third parties, without the consent of author. power supply to be present at VECU. If VECU is powered up, VECU pin can get damaged during continuity check. DTC’s confirmation: - After rectification, ensure the following points by referring to VECU parameter list using TML diagnostic tool before handing over to customer. Read Parameter ‘PDU -Ve Bus bar temperature’ (DID number: 3427) and check if busbar temperature value is within the operating range. If vehicle is stationary, the parameter value may be comparable with ambient temperature in Deg C. DID No Vehicle Parameter Name Expected Value 3427 PDU -Ve Bus bar temperature Temp. of negative busbar in PDU (Deg C) Circuit Schematic Diagram: Component Location & Image: -
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