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: 1618 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. Trouble Shooting:- Step Checks IF YES IF NO 1 Check Rail Pressure and Temperature Sensor Clean the Rust or repair Go to Step 2 2 Is there wiring harness electrical continuity between ECU pin 226 & sensor pin no.2. Go to Step 3 Establish continuity by rectifying harness connections as per the Circuit schematic 3 Is Pin 226 CNG rail temperature line short to Battery Rectify the Fault Go to step 4 4 Are there any pins damaged at sensor /EMS ECU Connector Replace the connector or wiring harness Go to step 5 5 Are there any pins backed out from the sensor /EMS ECU Connector Rectify/Replace Connectors Go to Step 6 6 Are there any faults related to sensor power supply voltages Replace these faults by following their rectification procedure Go to step 7 7 Fault Still Persists? Replace sensor and then Fault still persists then Replace EMS ecu Follow the steps again for reconfirmation DTC’s confirmation:- Recheck the fault, fault shall not reappear.
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