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{Osprey CCM}
DTC Troubleshooting Data
Version: 2.0
Date: 28-Jul-17
Author: ERC
Page: 110 of 244
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TATA MOTORS Ltd.
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B1F1D-11:- Fresh Air/RECIRC Feedback Signal - Circuit Short to Ground;
:
ISO Code
B1F1D- 11
Customer Symptom
System is less responsive to user control and environmental
conditions
Fault Effects (On Vehicle)
1) If Motor learning is in process, end stops will not be learnt
properly
2) Motor will not be positioned accurately
Lamp Status (If Any)
NA
Fault Detection Condition
Fresh/RECIRC Door Control Motor Feedback Line - Circuit
short to Ground
Normal Operating Condition
With the Fresh/RECIRC feedback line connected to the
harness and with Ignition ON, check the voltage between pin
no 10 of blue connector & ground. The voltage range should
be in between 0.4 to 4.47V
Probable Trouble Area
Sensor signal short to Ground
Healing Condition
NA
Component Details:
The recirculation/fresh air selector door actuator motor controls the position of the door which allows fresh air or
recirculation air, or a combination of the two, into the vehicle. The motor is mounted on the recirculation /fresh air duct.
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 Air-Inlet Door Flap
and
AI Door flap Position (Internal Value)
for
actual and target position of Actuator