Vehicle Platform: Zest, Bolt, Tiago, Tigor, Osprey, Q501, X451, Q502 ECU Name: Hella Body Control Module (BCM) DTC Troubleshooting Data Version: 3.8 Date: 17-10-2022 Author: BCM COC Page: 480 of 1202 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. BCM ECU Faulty ReplaceBCM ECU Is connector faulty? Correct connector fault (Terminals Bend) YES 1.Take out Infotainment Removal Signal. 2. Check if infotainment is blown Continuity found? Correct BCM side wiring harness (Short To Battery) YES NO Check continuity between BCM connector pin [C1-11] and BCM battery [C3-2/C3-1] 1. Remove Infotainment Removal Signal mating connector 2. Perform the visual check of connectors for pin bend or damaged etc. Is connector faulty? Correct connector fault (Terminals Bend) YES NO Infotainment blown? Replace the Infotainment (Open Circuit) 1. Remove all BCM connector. 2. Take out Infotainment Removal Signal output wire [C1-11] from connector. 3. Reconnect all connectors including battery. 4. Check if Infotainment Removal Signal is ON? Infotainment Removal Signal is ON? Reconnect all connectors firmly YES NO YES NO NO A B B1618 – 15: Infotainment Removal Signal – Short To Battery / Open
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