`243 Author: Navya Krishnan 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 3.0 DTC Troubleshooting Data Version: 1.0 Date: 24-July-2023 P19272D:- OBC Discharge AC Over Load failure verview: ISO Code (If applicable) P19272D Customer Symptom NA Fault Effect (On Vehicle) OBC will stop AC output during V2X mode Lamp Status (If Any) NA DTC Detection Condition This DTC gets logged if DischargingMode/V2X mode: AC load demand_ is above the 3in1 InverterPowerLimit * 1.05, Timer > 5000ms or AC_load demand is above InvertePowerLimit *1.1, Timer > 100ms) Normal Operating Condition AC load demand < 3in1 inverter Maximum power output Probable Trouble Area V2X mode 1.V2L mode: Load side short circuit/unhealthy load,load>3.3kw 2.V2V mode:sink vehicle demand is more than 6Kw 3.V2L adaptor /V2V gun side short circuit/damage 4.OBC output current detection circuit is abnormal. Healing Condition /Disconnect the V2X gun and connect back after 30sec, press V2X switch Write up for the system:- The component 3in1( DC-DC Converter, On-Board Charger and Power distribution unit)is used to charge LV battery, HV battery and act as junction box between HV power train components ( PTC, e-Compressor, HV battery, Fast Charging and MCU) . Pre-Check Points: c) Check for design intended charging Gun d) Check AC Input Connection (Live, Neutral & PE) for damage (connectors, terminals bending & oxidation of pins
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