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: 322 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 Connect Diagnostic tool and Run Input Test Routine and operate the switches as mentioned in the input switch test routine specification. Is DTC B220A-12 logged by Routine? Disconnect vehicle battery connection. (Please follow the safety guidelines) Check BCM and Front fog switch connectors for terminal backout Are connectors loose? 1.Remove BCM Connector. 2.Perform visual check of connectors for pins bent or damaged etc. Is connector faulty? 1.Put Front fog switch in OFF state. 2.Check continuity between BCMconnector pin [C1- 37]( Harness side) with battery [C3-2/C3-1] Continuity Found? STOP YES NO YES NO Reconnect connectors firmly Correct connector fault (Terminals Bend) YES NO Correct BCM Sidewiring harness (Short to Battery) NO YES B220A -12: Front Fog Lamp Control Switch – Short to Battery A B