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Vehicle Platform: OSPREY
ECU Name: Hella Body Control Module (BCM) DTC
Troubleshooting Data
Version: 1.4
Date: 15 May 2018
Author: Body CoC
Page: 341 of 855
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TATA MOTORS Ltd.
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B2253 – 12: Turn Left Indicator Switch Circuit – circuit short to battery
Overview:
ISO Code
B2253 - 12
Customer Symptom
Turn left indication always OFF
Fault Effects (On Vehicle)
Turn left indication always OFF
Lamp Status (If Any)
Always OFF
Fault Detection Condition
This fault will be logged after the input switch test
routine execution. User has to operate the switch
manually during routine. If short to battery fault is
detected for turn left indicator switch then this DTC code
will be returned with the Routine results.
Normal Operating Condition
There should not be any fault returned by routine
Probable Trouble Area
1. BCM connector Fault
2. Turn left indicator short to ground from cockpit
wiring harness
3. Turn indicator switch damaged or stuck
4. Combi switch connector fault.
5. BCM ECU fault
Healing Condition
1. Ignition OFF
ON
2. Clear DTC Command
Component Details:
Turn left indicator switch is part of combi switch. If the IGN is ON and turn left indication is given by user
then turn left indicator lamps will flash with predefined frequency.
Preliminary Checks:
1. Check Battery Voltage (12.5 V & above)
2. Check ECU pins for oxidation, bending & damage.
Trouble Shooting:-