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{Osprey CCM}
DTC Troubleshooting Data
Version: 2.0
Date: 28-Jul-17
Author: ERC
Page: 64 of 244
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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.
B1F2F-11:- Blower Motor Drive Signal - Circuit Short to Ground;
:
ISO Code
B1F2F - 11
Customer Symptom
Some or all functionality may be lost
Fault Effects (On Vehicle)
Blower will be Off. Hence no heating or cooling will be
achieved
Lamp Status (If Any)
NA
Fault Detection Condition
Blower Control Circuit Motor line - Circuit short to ground or
Open
Normal Operating Condition
With the Blower control circuit connected to the harness and
with Ignition ON, check the voltage between pin no 26 of blue
connector & ground of the Connector. The voltage range
should be in between 1.73 to 8.71 V.
Probable Trouble Area
Drive line is short circuited to ground
Healing Condition
NA
Component Details:
The blower is used for moving air from either an outside source--referred to as vented air--or from cabin air past the
heater core or air conditioning evaporator. In doing so, it causes a heat transfer either to the inside of the car or from the
inside to the outside.
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
Blower Speed Output (Internal Value)
for Blower speed with the diagnostic tool