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: 282 of 301 DTC’s confirmation: - 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:- Component Location & Image: - N.A Connector Location: N.A Connector View & Information: - Inspection Method: -N.A U0422-81:- Invalid Data Received From BCM Overview: ISO Code U0422-81 Customer Symptom Rear defogger may not function Fault Effects (On Vehicle) Reduced climate functionality and performance. Lamp Status (If Any) N.A Fault Detection Condition Relevant functional DTCs present in BCM Normal Operating Condition BCM ECU sends correct data in normal condition. Probable Trouble Area Incorrect data received from BCM. Healing Condition After rectifying relevant functional failures in the BCM ECU
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