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: 562 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 Ambient Door Pocket Lights. 2. Check if bulb is blown Continuity found? Correct BCM side wiring harness (Short To Battery) YES NO Check continuity between BCM connector pin [C2-12] and BCM battery [C3-2/C3-1] 1. Remove Ambient Door Pocket Lights 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 Bulb blown? Replace the bulb (Open Circuit) 1. Remove all BCM connector. 2. Take out Ambient Door Pocket Lights output wire [C2-12] from connector. 3. Reconnect all connectors including battery. 4. Check if Ambient Door Pocket Lights is ON? Ambient Door Pocket Lights is ON? Reconnect all connectors firmly YES NO YES NO NO A B B1F11 – 15: Ambient Door Pocket Lights – Short To Battery / Open
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