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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: 80 of 202
B1F3E-71:- Temperature Door Control Motor - Actuator stuck;
ISO Code
B1F3E-71
Customer Symptom
No air temperature 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)
Motor shall be disabled
Fault Detection Condition
Temperature Door Control Motor – Actuator Stuck
Normal Operating Condition
Air Temperature Drive Motor is moving according to the
input
Probable Trouble Area
Motor is stuck because of a mechanical block or
obstruction in movement of flap
Healing Condition
Perform ignition ON/OFF for 11 Cycles for Auto Calibration
Component Details:
The actuator controls the position of the temperature blend door based on the voltage signal from the FATC module.
Potentiometer, inside the actuator, sends a feedback signal to the controller and controller cuts off the voltage signal
coming from the controller when the required door position is achieved.
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 Trouble Shooting.