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. Action: Go to step 16 Action: Check for terminal loose connection or backout, replace AC Compressor to MSD short link harness 16 Remove MSD short link connector Check continuity of short link, between C802A-1 and C802a-1 MSD short link is ok Action: Go to step 17 Problem is in MSD short link Action : Replace MSD short link 17 Remove VCU and MSD short link connector Check continuity between C776B-56 and C802-1 No problem in VCU to MSD short link harness Action: Go to step 18 Problem is in VCU to MSD short link harness Action: Check for terminal loose connection or backout, replace VCU to MSD short link harness 18 Observe the pin on the VCU side Check for pin backout on the VCU side Action: Replace the VCU Problem is in VCU connector Action: replace VCU connector 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.
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