Vehicle Platform: OSPREY ECU Name: Hella Body Control Module (BCM) DTC Troubleshooting Data Version: 1.4 Date: 15 May 2018 Author: Body CoC Page: 447 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. U100F -11: Ignition Power mode Input Switch - circuit short to battery START Connect Diagnostic tool and Run Input Test Routine and operate the switches as mentioned in the input switch test routine specification. Is DTC U100F-12 logged by Routine? Disconnect vehicle battery connection. (Please follow the safety guidelines) Check BCM and Gear selection switch connectors for terminal backout Are connectors loose? Correct connector fault (Terminals Bend) 1.Remove BCM Connector. 2.Perform visual check of connectors for pins bent or damaged etc. Is connector faulty? STOP 1. Disconnect Ignition switch 2. Check Continuity between BCM side connector pin [C19] with battery [C3-2/C3-1] Continuity Found? Correct BCM side wiring harness ( Short to Battery) 1. Remove Ignition switch mating connector. 2. Check continuity of Ignition switch contact [C1- 9] with BCM battery [C32] Reconnect connectors firmly Continuity Found? 1. Ignition switch faulty. 2. Replace Ignition switch. BCM ECU Faulty Replace BCM ECU NO YES YES NO YES YES YES NO NO NO
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