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: 445 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. START Check DTC present is Permanent or Historic Is History? Disconnect vehicle battery connection. (Please follow the safety guidelines) 1. Clear the DTC from memory 2. Turn the IGN to OFF 3. Start the IGN Is DTC B2501- 12 present? Check Relay NO & NC connectivity Replace Relay NO shorted NC open Yes Check BCM and Horn relay connectors for terminal backout Are connectors loose? Reconnect connectors firmly NO open NC shorted 1.Remove BCM side wiring harness Connector. 2.Perform visual check of connectors for pins bent or damaged etc. Yes No No Is connector faulty? Yes Is DTC B2501- 12 present? Yes Correct connector fault (Terminals Bend) Yes STOP A No No No Take out Horn Relay. B C