Vehicle Platform: Tiago,Tigor & Osprey ECU Name: Hella Body Control Module (BCM) DTC Troubleshooting Data Version: 2.0 Date: 22-10-2018 Author: Parag K Page: 524 of 737 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. START Connect Diagnostic tool and Run Input Test Routine and operate the switches as mentioned in the input switch test routine specification. Is DTC B223B - 12 logged by Routine? Disconnect vehicle battery connection. (Please follow the safety guidelines) Check BCM and combi switch connectors for terminal backout Are connectors loose? 1.Remove BCM Connector. 2.Perform visual check of connectors for pins bent or damaged etc. Is connector faulty? 1.Put combi switch in OFF state. 2.Check continuity between BCM connector pin [C1-12] with battery [C3-2/ C3-1] Continuity Found? 1.Remove Combi Switch mating connector 2. Check continuity between BCM harness side connector pin [C1-12] and Rear Washer contact at combi switch [pin details TBD]. Open Circuit? Perform the visual check of connectors for pin bend or damaged etc. Is connector faulty? Check continuity at combi switch Rear washer contact[ pin details TBD] with ground [ pin details TBD] Continuity found? BCM ECU Faulty STOP YES NO YES NO Reconnect connectors firmly Correct connector fault (Terminals Bend) YES NO Correct BCM Side wiring harness (Short to Battery) NO YES Correct wiring harness (Open Circuit) YES NO Correct connector fault (Terminal Bend) Correct connector fault at combi switch mating connector (Open Circuit) YES NO YES NO Replace BCM ECU 1. Connect combi switch mating connector 2. Put combi switch at Rear washer switch contact 3. check continuty between combi switch Rear washer switch contact[ pin details TBD] with ground [ pin details TBD] Continuity found? YES Combi switch fault . Replace combi switch NO B223B - 12: Rear Washer Switch - circuit short to battery or open
RkJQdWJsaXNoZXIy MTIwNTUz