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: 173 of 301 DTC’s confirmation:- After rectification, ensure the following points before handing over the system to the customer. a) Blower speed shall be changing when requested. Circuit Schematic Diagram:- “Refer the circuit schematics from the tool” Component Location & Image:- Connector View & Information: - N/A Inspection Method: - N/A B1F4C-23:- Blower speed down request-Signal Stuck Low Overview:- ISO Code B1F4C-23 Customer Symptom Function cannot be manually selected Fault Effects (On Vehicle) Switch does not function
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