Vehicle Platform & ECU Name DTC Troubleshooting Data Ver: 1 Date: 23/11/2022 Author: ERC Page 460 of 834 Copyright by TATA MOTORS Ltd. This document must not be used in any w ay, such as copying and redistributing to third parties, w ithout our consent Step 4 Check the ECU terminal pin for any damage or bend. Check the ECU connector for any pin backout - Step 5 Check whether the Fuel Level in Fuel Tank is very low - Step 6 Check for Leakage/Bends/Crimps in High Pressure Circuit - Step 7 Check for The Bends/Crimps in Low Pressure Circuit – Tank to HP pump, HP pump to Tank & Back leak - Step 8 Perform the priming using prime pump. Check if priming is correct. If not check step 5,6,7 & replace prime pump Step 9 Change the Fuel Filter if the vehicle has crossed the distance limit - Step 10 Perform HP diagnostics and Back leak test using Delphi DDS tool. Check whether Injector results are within limit. If found abnormal, change the injector - Associated Parameters: Parameter Label Description DID Monitoring Main injection fuel demand chkd Main injection fuel demand. FE65 Ranges from 1 mg/st to 55 mg/st based on engine load IMV current demand IMV current demanded by the ECU FE14 “IMV current demand” and “Measured current in the IMV actuator” closely matches in normal operation. Measured current in the IMV actuator IMV current feedback to the ECU FE61 State of the rail pressure control State of the rail pressure control FE63 Rail pressure control state to be noted Rail pressure error Rail pressure error FE20 Error should be less than 100 bar for normal operation Rail pressure feedback Rail pressure sensor feedback FE1 A Rail pressure feedback to be noted Verification condition: Drive the vehicle in city and highway condition for 20 mins. Circuit Schematic Diagram:
RkJQdWJsaXNoZXIy MTIwNTUz