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: 113 of 202 B1F4D-23:- Air Distribution Request Button-Signal Stuck Low Overview:- ISO Code B1F4D – 23 Customer Symptom Air Distribution Request Button cannot be manually selected Fault Effects (On Vehicle) Air Distribution Request Button is stuck and mode cannot be changed. Lamp Status (If Any) Air Distribution(Mode) is set to automatic airflow mode Fault Detection Condition Air Distribution Request Button -Signal Stuck Low Normal Operating Condition The mode can be changed by pressing Air Distribution button. Probable Trouble Area Mode switch component failure. Healing Condition Check and lubricate switch, replace control panel Component Details: Air Distribution Button is shown in above image. This button used to change the Mode. 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
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