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. 4. Remove the VCU connector. Check if there is a continuity between K39 Pin No. of VCU and the ground (Chassis). Problem in VCU connector. Change VCU connector Action: Go to step 4 5. Observe the pin on the VCU side Check for pin backout on the VCU side Action: Replace the VCU and go to step 5 Problem is in wiring harness between relay and VCU Action: replace WH DTC’s confirmation: - After rectification, ensure the following points by referring to HV battery DID list using TML diagnostic tool before handing over to customer. 1. Check if HV battery input is 12V at LV battery terminals after crank is ON. 2. Check whether the EV critical alert is off.
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