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: 37 of 202 B1F2E-13:- Air Distribution Motor Drive Line – Circuit Open; ISO Code B1F2E- 13 Customer Symptom No air distribution (mode) control (manual or automatic) Fault Effects (On Vehicle) Motor movement is not possible Lamp Status (If Any) Motor To be Disabled Fault Detection Condition Mode Door Control Motor Drive Line -open 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 Either or both Motor drive lines is open circuited (Can be detected only when motor movement is requested) Healing Condition If there is no continuity between the Mode distribution door Motor drive line & ECU connector then correct the wiring harness 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) Read ECU parameter value Target Position of Mode Door Flap and Air Distribution Mode Door flap Position (Internal Value)for actual and target position of Actuator
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