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: 420 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 – P0202,P0265/264 appears Follow their respective rectification procedure and rectify those faults Go to Step 2 2. Are any of following faults appears – P0351, P0352, P0353 Follow their respective rectification procedure and rectify those faults Go to step 3 3 Are Ignition Coil B, HT Cables, Spark Plugs properly functional Rectify/Replace the faulty Components Go to step 4 4 Faulty/Clogged Injector cylinder 2? Replace/Clean Injectors Go to step 5 5 Compression Pressure Low? Rectify the faulty component Go to Step 6 6 Improper Valve Clearance? Rectify according to specification Go to step 7 7 Improper Valve Timing? Correct valve timing through calibration Go to Step 8 8 Any faults related to Engine Coolant Temperature Sensor or faulty Sensor? Rectify/Replace Sensor Go to Step 9 9 Is EMS ECU connector tight? Go to step 10 Refit the connector tightly 10 If fault still persists? Replace the EMS ECU 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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