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: 199 of 301 Trouble Shooting:- Is DTC B1F37-23 is Present? Check for Max Front Defrost Requestbutton functionality. Check the Max Front Defrost shall beON by pressing Max Front Defrost button Is Max Front Defrost button stucked? Check and lubricate switch if still the Max Front Defrost button is stucked then replace control panel. Clear the DTC from the ECU memory. Turn Ignition OFF & ON. Check the Max Front Defrostfunctionalityby pressing Max Front Defrostbutton Stop Stop YES NO YES NO Turn ON Ignition. Connect the TML Diagnostic Tool. Check the status of DTC’s (Memorized/Current) Record the DTC & Clear DTC’s Turn Ignition OFF & ON Verify If DTC B1F37– 23 is present
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