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. Trouble Shooting:- Step no. Description Check Point if YES if NO 1 Check for LV battery voltage Check if the LV battery voltage is > 10V Go to step 2 Problem is with LV battery being discharged. Action: Charge LV battery to 12V 2 Remove the fuse of OBC Check if the fuse is of the correct rating No problem in OBC fuse Go to Step 3 Problem is in OBC fuse. Action: Replace the fuse with correct rating 3 Remove the fuse of OBC Check if the fuse is blown or not Problem is in OBC fuse. Action: Replace the fuse No problem in OBC fuse Go to Step 4 4 Remove the LV connector of OBC Check if there is continuity between OBC connector pin CAN H and CAN L Check for damage in OBC connector Action: Replace OBC No problem in OBC side LV connector Go to step 5. 5 Remove the LV connector of OBC Check if there is continuity between OBC side LV connector pin CAN H and CAN L Check for damage in connector pin/LV harness Action: Replace the pins/ terminals or replace the LV harness No problem in OBC side LV connector Go to step 6.
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