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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: 393 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.
B
C
Check countinuty between BCM connector pin
[C1-
30]
and BCM Battery voltage pin
[C3-1/ C3-2]
Continuity found?
Correct BCM side wiring harness
(Short To Battery)
Yes
1.Remove Horn Relay mating connector
2.Perform the visual check of connectors for pin bend or
damaged etc.
Is connector faulty?
Correct connector fault
(Terminals Bend)
1.Remove all BCM connector
2.Take out Horn Relay output wire
[C1-30]
from connector
3.Reconnect all connectors including battery
4.Check if Horn funtionality is ON?
Horn functionality
is ON?
Reconnect all
connectors firmly
BCM ECU faulty
Replace BCM ECU
Yes
Yes
No
No
No