TATA BSVI Gasoline_Bifuel Program – EMS ECU Bosch DTC Troubleshooting Service Manual Version: 2.6 Date: 5-10-2023 Prepared By: Pradip Shimpi Checked By: Yeshwant Jadhav Approved By: Sanjeev M. Document Part No: 2921 02 xxx xxxx Page: 1446 of 1720 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 Check whether the EMS ECU is receiving supply and Ground Is there wiring harness electrical continuity between ECU pin 216 to Blower position Resistor Control Module pin H It is ok? END Yes No Rectify wiring harness connections as per schematic If fault still perstists? Rectify wiring harness connections as per schematic It is Yes No Is there wiring harness electrical continuity between ECU pin 130 to LPM Module pin no.1. It is Yes No Rectify wiring harness connections as per schematic Is 5V supply at Blower position Resistor Control Module pin E. It is Yes No Rectify wiring harness connections as per schematic Are there any pins damaged at EMS ECU Connector? It is Yes No Replace the connector of wiring harness Are there any pins back out from the EMS ECU Connector? It is Yes No Replace the connector of wiring harness Is ECU Pin 130, Short Circuited to GND/Battery It is Yes No Repair the harness as per the schematic Fault still persists then Replace EMS ECU
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