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. Still problem persists replace HV battery 11. Remove HV battery side LV connector. MSD should be connected (High voltage connector should be properly connected, both +ve and -ve) On HV battery side LV connector check continuity of pin C435A-E to chassis ground if the VECU parameter Vehicle HVIL Sense PWM dutycycle value is 0 or check continuity of pin C435A-E to battery supply if the VECU parameter Vehicle HVIL Sense PWM dutycycle value is 100 Replace the HV Battery LV connector Go to step 12 12. Remove E-drive side and HV battery side LV connectors Check if there is continuity between C446A-6 and C435A-F of these connectors No problem in the wiring between the E-drive connector and HV battery connector. Go to Step 13 Problem is in HV battery to Edrive wiring harness Action: Change HV battery to Edrive wiring harness 13. If there are any inline connectors, remove each of them Check if there is continuity between consecutive connectors No problem in wiring between the inline connectors Problem may be in VCU sensing circuit Problem is in HV battery to Edrive wiring harness Action: Change HV battery to Edrive wiring harness
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