Vehicle Platform & ECU Name DTC Troubleshooting Data Ver: 1 Date: 23/11/2022 Author: ERC Page 320 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 6 Remove EGR connector & connect it to new part. After 5 power latches with only ignition ON check. If fault is resolved replace that part. Repeat this process for DP sensor, CAM sensor, Fuel filter clog sensor and Accelerator pedal sensor. Replace part which has internal short circuit Step 7 If there is no short circuit in the wiring, disconnect the engine pocket from ECU and Check the continuity of ECU pins A55, A56, A57, A58, B35, B36 in the ECU to ECU ground. If short circuit is identified, replace the ECU. Use multimeter to check continuity Verification condition: Drive the vehicle at city and highway condition for 20 mins. Component Details: The EMS ECU is an electronic control unit that controls a series of actuators on an internal combustion engine to ensure optimal engine performance. It does this by reading values from a multitude of sensors within the engine bay, interacting with the other ECU on CAN (TCU, ABS/ESP, IPC, TOD, DCS, BCM etc.), interpreting the data using multidimensional performance maps (called lookup tables) and adjusting the engine actuators accordingly There are three regulated power supplies from EMS ECU which provide input power supply to the sensors interface to EMS ECU in the vehicle. Circuit Schematic Diagram:
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