Gravitas FATC Gen 3 DTC Troubleshooting Data Version: 1.0 Date: 15-July-2023 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. Author: ERC Page: 288 of 301 After rectification, ensure the following points using TML diagnostic tool before handing over to customer. a) DTC should not be present in ECU memory. Circuit Schematic Diagram:-N.A Component Location & Image: - N.A Connector Location: N.A Connector View & Information: -N.A Inspection Method: - N.A U0499-81:- Invalid Data Received From Telematics control unit Overview: ISO Code U0499-81 Customer Symptom Some or all functionality may be lost Fault Effects (On Vehicle) Remote AC feature might get affected Lamp Status (If Any) HVAC uses default data values Fault Detection Condition Invalid Data Received From Telematics Control Unit - Invalid Serial Data Received 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
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