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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: 253 of 737
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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.
B2503 -11: Reverse Gear Selection Switch - circuit short to ground/ open circuit
START
Connect Diagnostic tool and Run Input Test Routine and operate the
switches as mentioned in the input switch test routine specification.
Is DTC B2503-11 logged
by Routine?
Disconnect vehicle battery connection.
(Please follow the safety guidelines)
Check BCM and Gear selection switch connectors
for terminal backout
Are connectors loose?
Reconnect connectors firmly
YES
NO
1.Remove BCM Connector.
2.Perform visual check of connectors for pins bent or
damaged etc.
Is connector
faulty?
Correct connector fault
(Terminals Bend)
YES
NO
Check Fuse ( Reverse and break lamp fuse/ Battery fuse)
Fuse Blown?
Replace the Fuse
(Open Circuit)
YES
NO
STOP
YES
NO
A
B