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: 294 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. Trouble Shooting:- B225B – 09: Master Light Switch Failure – Component Failures Start Connect the Diagnostic Tool and check for DTCs Is DTC B225B – 09 present? STOP Check DTC present is Current or history Yes History? Yes Is DTC B1324 – 09 present? C Yes C Any fault observed ? Correct the fault Check continuity between BCM Master Light switch connector and BCM ground[C1-3]. Disconnect vehicle battery connection. (Please follow safety guidelines) Check BCM and Master Light switch connectors for terminal backout 1. Clear the DTC from memory. 2. Turn the IGN to OFF. 3. Start the IGN. 4. Check for DTCs. No Is continuity found ? Replace switch Remove BCM side wiring harness Connector and Perform visual check of connectors for pins bentor damaged etc Is connector faulty? BCM ECU faulty ReplaceBCM ECU No Yes No Yes No Yes No No Replace Connector
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