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: 1160 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) Check transmission is in limp mode. 5) Check Crash is Active. 6) Check engine coolant temp. 7) Check steering condition 8) Check AC system condition 9) Check Drive mode 10) Clear Fault. Trouble Shooting: - Step Checks IF YES IF NO 1. Check the ESS Autostop/ Autostart related Sensors Error Go to Step 2 2. Check the respective senosr Connctions (As below) Go to Step 3 3. Check Engine is in limp mode Go to Step 4 Check the connections 4. Check Crash is Active Go to Step 5 Check the connections 5. Check engine coolant temp Go to Step 6 Check the connections 6. Check steering condition Go to Step 7 Check the connections 7. Check AC system condition Go to Step 8 Check the connections 8. Check Drive mode Go to Step 9 Check the connections 9. Clear Fault DTC’s Healing Confirmation: - After rectification, ensure the following points by referring engine parameters using TML diagnostic tool before handing over to customer. Auto Start Stop function will work properly. Auto Start Stop lamp switch indication will be functional. Circuit Schematic Diagram:
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