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: 1086 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. Start Read IVN DTCs in ECM Is MTO logged against HVAC Control Module in current state? No (In history) Check continuity between HVAC Control Module CAN_H (Connector C1 pin no. 24 ) to ECM CAN_H(pin no. 132) and HVAC Control Module CAN_L (Connector C1 pin no. 22 ) to ECM CAN_L(pin no. 144) in vehicle wiring side connector. Is continuity there? Repair the wiring harness Clear DTC Stop Check Ignition (Connector C1 pin no.11), Battery (Connector C1 pin no. 15,16) and Ground (Connector C1 pin no. 1,2) of HVAC Control Module is properly connected or not . Also check fuse blown (Name: F18, Rating:10Amp Do necessary repair in the harness Yes Yes No U0164-31 Loss of communication with HVAC Control Module- Bus Signals/ Message Failures