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: 550 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 Replace BCM ECU Ignition Keyhole Illumination Signal. Continuity found? Correct BCM side wiring harness (Short To Ground) YES Check continuity between BCM connector pin [C4-14] and BCM ground pin [C1-34] 1. Remove Ignition Keyhole Illumination Signal 2. Perform the visual check of connectors for pin bend or damaged etc. Is connector faulty? Correct connector fault (Terminals Bend) YES NO Check continuity between two terminals of Ignition Keyhole Illumination Signal Continuity found? 1. Lamp is faulty 2. Replace Ignition Keyhole Illumination. NO YES NO A B B1F06 – 11: Ignition Keyhole Illumination Signal – Short To Ground
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