TATA BSVI Gasoline_Bifuel Program – EMS ECU Bosch DTC Troubleshooting Service Manual Version: 1.9 Date: 24-01-2022 Prepared By: Veer K. Singh / Prudhvi B Varma Checked By: Yeshwant Jadhav Approved By: Sanjeev M. Document Part No: 2921 02 xxx xxxx Page: 1175 of 1692 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. Flow Chart: - START Is there wiring harness electrical continuity between ECU pin 129 & alternator signal pin. Establish continuity by rectifying harness connections as per the circuit diagram It is ok? Repair the harness as per the schematic It is ok? Check Alternator voltage below threshold. It is ok? Rectify /replace connector END Rectify wiring harness Maintain sufficient It is ok? Check Alternator supply short to ground Fault still persists Alternator faulty
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