TML Gen3 IVI DTC Troubleshooting guide Version: 0.4 Draft Date: 04-Aug-23 Author: Hemant Mitra Page: 544 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. U0402 - 81:- Invalid Data Received From TCM Overview:- ISO Code U0402-81 Customer Symptom Current gear display will be ‘F’ Fault Effects (On Vehicle) Current gear display will be ‘F’ Lamp Status (If Any) TCM Lamp ON Fault Detection Condition Relevant functional DTCs present in TCM Normal Operating Condition TCM ECU sends correct data in normal condition. Probable Trouble Area Incorrect data received from TCM. Healing Condition After rectifying relevant functional failures in the TCM ECU Trouble Shooting:-
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