NEXON 2.0 EV DTC Troubleshooting Document for VCU Version: 1.0 draft Date: 31-Jan-2022 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. connection, Recouple EVCU connectors P302A-84 using TML diagnostic tool. 2. Check Continuity between EVCU's supply pins and Battery terminals Check continuity between EVCU's supply pin C776A-4,5,6 and battery positive terminal and continuity between EVCU's ground pin C776A-2,3 and battery negative terminal Problem is in EVCU. Action: Replace EVCU and try Fast Charging Problem is in wiring harness between Battery and EVCU Action: Repair harness DTC’s confirmation: - After rectification, read DTC using TML diagnostic tool and Clear the DTC Ensure no DTC is in defect/confirmed state before handing over to customer. Circuit Schematic Diagram: Component Location: - Vehicle charging inlet, DC Fast charging socket of vehicle.
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