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. lamp and Go to step 1. 2. Remove VCU side and relay side LV connectors Check if there is continuity between these connectors No problem in the wiring between the reverse lamp connector and VCU connector. Go to Step 3 Issue is between the reverse lamp connector to VCU wiring harness Action: replace wiring harness 3. 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 Go to Step 4 Issue is between the reverse lamp connector to VCU wiring harness inline wiring harness Action: replace wiring harness 4. Observe the pin K36 on the VCU side Check for pin backout K36 on the VCU side Action: Replace the VCU and go to step 4 Problem is in wiring harness between relay and VCU Action: replace WH DTC’s confirmation: - After rectification, send Clear DTC command by using TML diagnostic tool. Ensure no DTC is in defect/ confirmed state before handing over to the customer. Circuit Schematic Diagram:
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