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: 432 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. Trouble Shooting:- Step Checks IF YES IF NO 1. Are any of faults – P0327-14, P0328-15 appears Follow their respective rectification procedure and rectify those faults Go to Step 2 2 Is there wiring harness electrical continuity between ECU pins237,238 & Knock Sensor connector pins 1,2? Is there any back out at knock Sensor connector or EMS ECU connector pin damaged? Go to Step 3 Establish continuity by rectifying harness connections as per the Circuit schematic.Replace the connector if found faulty. 3 Is Knock Sensor faulty? Check the resistance between two leads and it should be between 4 – 10 Mega Ohms. If found faulty then replace the Knock Sensor Go to step 4 4 Is EMS ECU connector and Knock Sensor connector tight? Go to step 5 Refit the connector tightly 5 If fault still persists? Replace the EMS ECU Follow the above procedure for reconfirmation DTC’s confirmation:- After rectification, ensure the following points by referring engine parameters using TML diagnostic tool before handing over to customer. Recheck the fault, fault shall not reappear.
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