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. 1 Remove the telematics connector Check continuity between supply pin C739-24 and telematics wakeup pin C739-36 Internal short in the Telematics ECU Action: Replace telematics ECU Go to Step 2 2 Remove VCU side and telematics side LV connectors Check if there is continuity between supply pin C739-24 and wakeup pin of harness side C73936 Problem in the wiring between telematics and VCU. Go to Step 3 3 If there are any inline connectors, remove each of them Check if there is continuity between supply pin and wakeup pin of consecutive connectors Problem in wiring between the inline connectors Action: change LV wiring harness connector and repeat step 3 Go to Step 4 4 Remove the VCU connector Check if there is a continuity between VCU supply and the VCU Pin K52 Problem in VCU connector or VCU. (Change VCU connector or VCU) TBD Action: Go to step 5 DTC’s confirmation: - After rectification, send Clear the DTC command by using TML diagnostic tool. Ensure no DTC is in defect/ confirmed state before handing over to customer. Circuit Schematic Diagram:
RkJQdWJsaXNoZXIy MTIwNTUz