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: 141 of 301 Customer Symptom No air distribution (mode) control (manual or automatic) Fault Effects (On Vehicle) The motor is blocked and its motion toward either end is not possible Lamp Status (If Any) NA Fault Detection Condition Mode Door Control Motor Calibration Fault Normal Operating Condition With the Mode motor drive line connected to the harness and with Ignition ON, check the voltage between blue connector pin no 5& ground or 21& ground of the Connector. The voltage range should be in between 0 to 14 V Probable Trouble Area Motor learning is not accomplished because of 1) Shorting of Motor drive to battery or ground 2) Motor is stuck while calibrating 3) System over/under voltage during calibration 4) Motor feedback fault short to battery or ground Healing Condition NA Component Details: The Mode Door Actuator controls the direction of airflow. It selects which way air flows through the different ducts. 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:-
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