`7 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. Kanger3.0-LR DTC Troubleshooting Data Version: 1.0 Date: 24-July-2022 P197913:- AC slow charge interlock signal detection circuit fault Overview:- ISO Code (If applicable) P197913 Customer Symptom NA Fault Effect (On Vehicle) 1) OBC will stop charging HV battery 2) Vehicle not able to Cranck 3) OBC will stop V2X charging Lamp Status (If Any) HV critical lamp blinking (while cranking vehicle) DTC Detection Condition This DTC gets logged if Interlock signal detection circuit is abnormal for 1000ms Normal Operating Condition AC slow charging connector properly connected and no DTC observed. Probable Trouble Area 1) Loose connection of AC slow charging connector 2) HVIL pin damage ( 3in1 side connector and /or harness side connector) 3) Oxidation/carbon formation over HVIL pins Healing Condition 1. Switch off and switch on the vehicle 2. Reconnect AC slow charging connector 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,V2X Charging and act as junction box between HV power train components ( PTC, eCompressor, HV battery, Fast Charging and MCU) Pre-Check Points:- a) Check for AC slow charging Connector damage
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