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: 446 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. 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