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: 487 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. Is connector faulty? Correct connector fault (Terminals Bend) YES Check continuity between BCMconnector pin [C4-16] and BCM ground [C1-34/C1-47] Continuity found? Correct BCM side wiring harness ( Short to Ground) YES 1. Remove Internal Unlock Switchmating connector 2. Perform the visual check of connectors for pin bend or damaged etc. Is connector faulty? Correct connector fault (Terminals Bend) YES NO Continuity found? BCM ECU Faulty Replace BCM ECU Check continuity between Internal Unlock Switch terminal and ground NO NO NO YES A B B161A – 23: Internal Unlock Switch – Signal Stuck Low 1. Switch is faulty 2. Replace combi switch