{Osprey CCM} DTC Troubleshooting Data Version: 2.0 Date: 28-Jul-17 Author: ERC Page: 144 of 244 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. B1F22-11:- Air Distribution Feedback Power Supply – Circuit short to Ground;: ISO Code B1F22 - 11 Customer Symptom System is less responsive to user control and environmental conditions Fault Effects (On Vehicle) Motor feedback voltage will be affected and motor will not move to desired set point Lamp Status (If Any) NA Fault Detection Condition Mode Door Control Motor Potentiometer Supply Line - Circuit short to ground Normal Operating Condition With the Mode door Potentiometer supply line connected to the harness and with Ignition ON, check the voltage between blue connector pin no 3 & ground. The voltage should be 5V Probable Trouble Area 1) Sensor supply wiring is open circuited 2) Sensor supply wiring is short circuited to 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) 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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