TML Gen3 IVI DTC Troubleshooting guide Version: 0.4 Draft Date: 04-Aug-23 Author: Hemant Mitra Page: 443 of 584 Copyright © TATA MOTORS Ltd. This document must not be used in any way, such as copying and redistributing to third parties, without the consent of author. Trouble Shooting:- Turn ON Ignition. Connect the TML Diagnostic Tool. Check the status of DTC’s (Memorized/Current) Record the DTC & Clear DTC’s Turn Ignition OFF & ON Verify If DTC B1949 -15 is present Is DTC B1949-15 is Present? Check for continuity between Connector A, Pin No.5 (Batt) & Connector C, Pin no 23 (FLS input) of ECU Connector or FLS is Open Circuited. Is STB or Open present? FLS input is Short Circuit to Battery. Rectify Fault at wiring Harness & wait for 20sec to recover the fault. Clear the DTC & Check the CAN signals transmitted by IPC & check the change in fuel level in Fuel bars. Clear the DTC from the ECU memory. Turn Ignition OFF & ON. Check the change in fuel level in Fuel bars. Stop Stop YES NO YES NO Stop
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