Gravitas/SAFARI/X451/NEXON FATC DTC Troubleshooting Data Version: 1.1 Date: 28-Apr-2021 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: 152 of 244 Auto switch Button is shown in above image. The user shall be able to activate fully automatic temperature control when the Auto request button on CCH is pressed. Preliminary Checks: Switch On the IGN & perform the following check. 1) Connect the Diagnostics tool & check the DTC fault code 2) If the fault code exists, refer the corrective actions Trouble Shooting:- Is DTC B1F33-23 is Present? Check for Auto Request Button functionality. Check the Auto functionality by pressing Auto button Is Auto button stucked? 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 B1F33– 23 is present
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