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. 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 ABS Check if the fuse is of the correct rating No problem in ABS fuse Go to Step 3 Problem is in ABS fuse. Action: Replace the fuse with correct rating 3 Remove the fuse of ABS Check if the fuse is blown or not Problem is in ABS fuse. Action: Replace the fuse No problem in ABS fuse Go to Step 4 4 Remove the LV connector of GSS ABS Check if there is continuity between ABS connector pin CAN H and CAN L Check for damage in ABS connector Action: Replace ABS No problem in ABS side LV connector Go to step 5. 5 Remove the LV connector of ABS Check if there is continuity between ABS 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 ABS side LV connector Go to step 6. 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
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