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. 6 If there are any inline connectors, remove each of them Check if there is continuity between consecutive connector’s pin CAN H and CAN L Problem is in ABS to VCU wiring harness inline connectors Action: Change ABS to VCU inline wiring harness No problem in wiring between the inline connectors Go to Step 7 7 Remove the LV connector of VECU Check if there is continuity between VECU side connector pin CAN H and CAN L Check for damage in VECU connector Action: Replace VECU side connector No problem in VECU side LV connector Go to step 8. 8 Remove the LV connector of VECU Check if there is continuity between pin CAN H and CAN L of VECU Check for damage in VECU pin Action: Replace VECU 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 Schematic Block Diagram: - Refer LV schematic Sheet 37
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