TIAGO TIGOR BSVI - SERVICE MANUAL - DTC 24-12-2021

Vehicle Platform: Zest, Bolt, Tiago, Tigor, Osprey, Q501, X451, Q502 ECU Name: Hella Body Control Module (BCM) DTC Troubleshooting Data Version: 3.1 Date: 30-11-2019 Author: BCM COC Page: 141 of 1106 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:- C0040-12: Brake Pedal Switch 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 C0040-12 logged by Routine? Disconnect vehicle battery connection. (Please follow the safety guidelines) Check BCM and Brake Pedal 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. Brake Pedal Switch OFF state. 2. Check Continuity between BCM side connector pin[C1- 22] with battery [ C3-2, C3-1] Continuity Found? Correct BCM side wiring harness ( Short to Battery) 1. Remove Brake Pedal switch BCM side mating connector. 2. Check countinuty between Brake lamp contact at BCM side[C1-22] with battery [ C3-2, C3-1] Reconnect connectors firmly Continuity Found? 1. Brake Pedal Switch selection switch faulty. 2. Replace Brake Pedal Switch selection switch BCM ECU Faulty Replace BCM ECU NO YES YES NO YES YES YES NO NO NO