Q5/X451 FATC DTC Troubleshooting Data Version: 1.0 Date: 16-Oct-2018 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: 114 of 202 Trouble Shooting:- Is DTC B1F4D-23 is Present? Check for Air Distribution Request functionality. Check the Air Distribution Request functionality by pressing Air Distribution button Is Air Distribution button 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 changing by 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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