Vehicle Platform & ECU Name DTC Troubleshooting Data Ver: 1 Date: 23/11/2022 Author: ERC Page 337 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 If the VGT feedback is matching the demand, perform VGT learning using service tool - Step 5 If the VGT is observed to be stuck, contact the Turbo supplier for the necessary repair - Associated Parameters: Parameter Label Description DID Range VGT actuator position demand High-pressure VGT actuator position demand FE B4 Both should match with error < 10% when engine is running VGT actuator position High-pressure VGT actuator position FE B7 Boost pressure demand Boost pressure demand FE6B Boost pressure demand to be noted Verification condition: Run the vehicle in highway condition in engine warmed up condition for 30 mins. Stop intermittently by providing power latch and start back the engine. Component Details: Turbocharger (TC) is used to generate desired boost pressure utilizing the left-over thermal energy of exhaust gases. It is Variable Nozzle Turbine (VNT) type in order to generate desired boost pressure across the entire engine operating conditions using vanes which are electrically controlled by EMS ECU. It is mounted on exhaust manifold of the engine. TMAP sensor is used to measure pressure and temperature of boost air supplied by turbocharger and provides the value to EMS ECU to allow turbocharger to match the actual boost generated with that of boost demand required. It is mounted on intercooler outlet header Circuit Schematic Diagram:
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