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

TATA BSVI Gasoline Program – EMS ECU Bosch DTC Troubleshooting Service Manual Version: 1.2 Date: 18-12-2019 Prepared By: Sunita Mandlik Checked By: Yeshwant Jadhav Approved By: Satish Kumar Document Part No: 2921 02 xxx xxxx Page: 1069 of 1498 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:- Start Read IVN DTCs in ECM Is MTO logged against ABS in current state? No (In history) Check continuity between ECM CAN_H (pin no. 132) to ABS CAN_H(pin no. 26) and ECM CAN_L(pin no. 144) to ABS CAN_L(pin no. 14) in vehicle wiring side connector. Is continuity there? Repair the wiring harness Clear DTC Stop Check Ignition (pin 28), Battery (pin no. 1, 25) and Ground (pin no. 13,38) of ABS is properly connected. Also check fuse blown (Battery fuse 25 Amp and Ignition fuse 5Amp) Do necessary repair in the harness Yes Yes No U0121-31 Loss of communication with Antilock Braking System Control Module- Bus Signals/ Message Failures