Vehicle Platform: OSPREY ECU Name: Hella Body Control Module (BCM) DTC Troubleshooting Data Version: 1.4 Date: 15 May 2018 Author: Body CoC Page: 611 of 855 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. Normal vehicle setup start Connect Diagnostic tool and Read DTC. Switch ON front wash and read DTC. Is DTC B2256-14 NO 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 No Yes Replace the relay Any fault observed Correct the fault Any continuity observed No B2256-14 Wiper High/ Low relay short to GND/ Open Replace the ECU
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