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: 157 of 301 Trouble Shooting:- Is DTC B1F4D-23 is Present? Check for Air DistributionRequest functionality. Check the Air DistributionRequest functionalityby pressing Air Distributionbutton Is Air Distributionbutton stucked? Check and lubricate switch if still the Air Distribution button is stucked then replace control panel. Clear the DTC from the ECU memory. Turn Ignition OFF & ON. Check the Mode changingby pressing Air Distribution button 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 B1F4D – 23 is present
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