TML Gen3 IVI DTC Troubleshooting guide Version: 0.4 Draft Date: 04-Aug-23 Author: Hemant Mitra Page: 547 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. U0499 - 81:- Invalid Data Received From TCU Overview:- ISO Code U0499-81 Customer Symptom NA Fault Effects (On Vehicle) Remote engine start stop will not properly function Lamp Status (If Any) NA Fault Detection Condition IVN trans receiver fault, IPC connector wired wrongly, connector pin break out Normal Operating Condition TCU ECU sends correct data in normal condition. Probable Trouble Area Incorrect data received from TCU. Healing Condition After rectifying relevant functional failures in the TCU ECU Trouble Shooting:-
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