Vehicle Platform & ECU Name DTC Troubleshooting Data Ver: 1.0 Date: 30/11/2019 Author: ERC Page 367 of 610 Copyright by TATA MOTORS Ltd. This document must not be used in any way, such as copying and redistributing to third parties, without our consent P0046-71 : Turbocharger/Supercharger Boost Control "A" Circuit Range/Performance Overview: Code Cause Effect on Vehicle Fault Code: P0046-71 1. Electric VGT connection 2. VGT stuck 3. VGT damaged 1.CE Lamp On 2.Higher engine noise may observed Checkpoints: Check Battery Voltage Trouble Shooting Steps: Sr. No. Steps Specifications Step 1 Check ECU connector, VGT connector connected properly Physical check Step 2 Perform VGT actuator test Physical check Step 3 Check VGT compressor & Turbine wheels are in good condition Physical check Step 4 Replace Turbocharger Circuit Description: ECM continuously monitors its internal memory status, internal circuits. These are basically self-checks that insure that ECM is functioning properly. If any malfunction is detected, ECM will set the DTC. ECM is supplied voltage from the battery positive supply through Main relay. ECM ground connection is connected to the battery negative supply. ECM functionality critically depends on ensuring proper ground connection. Circuit Schematic Diagram: Component location and image:
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