Vehicle Platform: OSPREY ECU Name: Hella Body Control Module (BCM) DTC Troubleshooting Data Version: 1.4 Date: 15 May 2018 Author: Body CoC Page: 763 of 855 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. B160B – 12 : Door Unlock control driver Relay/ Tailgate Unlock Control Relay – circuit short to battery A Is connector faulty? 1. Remove relay from its mounting base. 2.Check continuity between BCM connector pin[C1-27] and BCM battery[C3-2/C3-1]. 1. Remove driver door unlock relay/tailgate unlock relay matting connector. 2. Perform visual check of connector for pins bend or damaged etc. Is connector faulty? 1. Remove all BCM connector. 2. Take out driver door unlock relay/tailgate unlock relay output wire[C1-27] from connector. 3. Reconnect all connectors including battery. 4. Check if driver door unlocks. Driver door unlocks? BCM ECU faulty Replace BCM ECU Correct driver door unlock actuator side wiring harness.(Short to battery) Correct connector fault(Terminals bend) Correct connector fault(Terminals bend) B NO YES YES YES NO NO Continuity found? Correct BCM side wiring harness(Short to battery). YES NO
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