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: 202 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. 4 Are there any pins backed out from the Sensor/EMS ECU Connector Rectify/Replace Connectors Go to Step 5 5 Is Sensor Supply Pin 223 Short Circuited to Battery/GND or Open? Repair the harness as per the schematic Go to step 6 6 Is Sensor Signal Pin 203 Short Circuited to battery? Repair the harness as per the schematic Go to Step 7 7 Is Sensor physically Damaged Replace Sensor Go to Step 8 8 Fault Still Persists? Replcae Sensor and then Fault still persists then Replace EMS ECU Follow the steps again for reconfirmation DTC’s confirmation:- After rectification, ensure the following points by referring engine parameters using TML diagnostic tool before handing over to customer. Pls. perform the Throttle Actuator IO Control test. IF test is successful then the fault rectification is confirmed. Recheck the fault, Fault shall not reappear. Circuit Schematic Diagram:
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