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: 597 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. P0512-09: Starter Request Circuit – Component Failures Overview: ISO Code P0512-09 Customer Symptom 1. Ignition will be continuously ON 2. Battery drains quickly Fault Effects (On Vehicle) 1. Ignition will be continuously ON 2. Battery drains quickly Lamp Status (If Any) SIL Lamp ON after 1 drive cycles Fault Detection Condition This fault gets logged when start button get stuck. Normal Operating Condition The start button work properly with single press. Probable Trouble Area Faulty Start Button, Improper Wiring Harness Connections Healing Condition After 1 Drive cycles Fault permanent deletion 1. Clear DTC Command form Scan tool 2. Stack Over Flow. 3. 40 warm up cycles. 4.ECU flashing 5. ECU Power-Fail Component Details: Starter Relay-2 is a normally Open relay. It is an electrically controlled switch. By energizing the coil of the relay, its contacts get closed. Preliminary Checks: 1) Loose/ Damaged Connections between Starter relay contact pin X and EMS ecu 2) Starter Relay Faulty / Stuck Open 3) Check for back out of pins at ECU connector. 4) Check for damage of pins at ECU connector.
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