HARRIER BOOK 2

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: 637 of 737

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.

Normal vehicle

setup

start

Connect Diagnostic tool and Read

DTC. Switch ON front wash and read

DTC.

Is DTC

B2256-14

YES

Stop

Remove Vehicle Battery connections.

(Please follow safety guidelines)

1) Remove BCM connector and check for backout/ pins bend/

damages.

Yes

Check continuity between

1) BCM connector B pin 1 and body GND in the

harness connector

2) BCM connector B pin 1 and Conn A pin 34/ 47

Yes

Correct the wiring

harness short and open

circuit reconnect the

vehicle battery and

BCM

Remove the wiper low/high relay and test

the relay. Connect external 12 V and GND

to the relay coils. Check the relay switches

ON or Not(by listening the tick sound)

Is relay faulty

Yes

Replace the relay

Any fault

observed

Correct the fault

Any continuity

observed

B2256-14 Wiper High/ Low relay short to GND/

Open

Replace

the ECU