1640 / 4910
Vehicle Platform: Tiago,Tigor & Osprey
ECU Name: Hella Body Control Module (BCM)
DTC Troubleshooting Data
Version: 2.0
Date: 22-10-2018
Author: Parag K
Page: 297 of 737
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.
START
Connect Diagnostic tool and Run Input Test Routine
and operate the switches as mentioned in the input
switch test routine specification.
Is DTC B2253-12
logged by Routine?
Disconnect vehicle battery connection.
(Please follow the safety guidelines)
Check BCM and combi switch
connectors for terminal backout
Are connectors
loose?
1.Remove BCM Connector.
2.Perform visual check of connectors for pins
bent or damaged etc.
Is connector faulty?
1.Put combi switch in OFF state.
2.Check continuity between BCM connector pin
[C1-
19]
( Harness side) with battery
[C3-2/C3-1]
Continuity
Found?
STOP
YES
NO
YES
NO
Reconnect connectors firmly
Correct connector fault
(Terminals Bend)
YES
NO
Correct BCM Side wiring harness
(Short to Battery)
NO
YES
B2253 -12: Turn Left Indicator Switch - circuit short to Battery
A
B