`155 Author: Navya Krishnan/Satyajit 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. Kanger 2.0 DTC Troubleshooting Data Version: 1.0 Date: 15-Feb-2022 Pre-Check Points: a) Check DCDC Converter output Connection (positive and ground) for damage (connectors, terminals bending & oxidation) b) Check for insulation resistance at the output of DCDC Converter (should be >500M ohms) c) Check for design intended LV battery Trouble Shooting:- Flow Diagram or table format for diagnosing the fault code Step no. Description Check Point if YES if NO 1 Remove the 12V LV battery negative terminal. After a minute connect the 12V LV battery negative terminal & "Ignition Switch" to ON position. Crank and wait for 2 minutes. Check for the fault code. Fault code P19D207 is Present? Go to step 2 Repair complete. 2 Check for HV battery over voltage fault Is fault code is present? Go to HV battery trouble shooting document Record Local snapshot of DTC. Replace 3in1 combo. DTC’s confirmation:- After rectification, ensure the following points by referring DCDC parameters using TML diagnostic tool before handing over to customer. a) DCDC converter charging LV battery in the range of 8V to 16V b) OBC charges HV battery
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