TIAGO TIGOR BSVI - SERVICE MANUAL - DTC 24-12-2021

Vehicle Platform: Zest, Bolt, Tiago, Tigor, Osprey, Q501, X451, Q502 ECU Name: Hella Body Control Module (BCM) DTC Troubleshooting Data Version: 3.1 Date: 30-11-2019 Author: BCM COC Page: 918 of 1106 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. Trouble Shooting:- Normal vehicle setup start Connect Diagnost ic tool and Run Input switch test routine and read DTC. Is DTC B1000-1C NO YES Stop Remove Vehicle Battery connections. (Please follow safety guidelines) 1) Remove BCM connector and check for backout / pins bend/ damages. 2) Remove the combi switch connector and check for backout/ pins bend etc. Yes Check continuity between 1) BCM connector 4 pin 21 and GND in the harness connector. 2) BCM connector 4 pin 21 and Connector C pin 1/ 2 in the harness connector. Yes Correct the wiring harness short and open circuit reconnect the vehicle bat tery and BCM Remove the Airbag Crash Signal and connect other working Airbag Crash Signal . Do all the initial vehicle setup(vehicle batt connect ion etc) No Any fault observed Correct the fault No Any continuity observed No B1000-1C Airbag Crash Signal - circuit voltage out of range Replace the ECU Is the front wiper variable speed working Yes Check continuity between BCM Harness mating connector 4 pin 21 and respective pin in Airbag Crash Signal Is cont inuity observed No Yes