NEXON NEW MCE-2 DCT BS VI DTC Troubleshooting Guide Version: 1.0 Date: 16-06-2023 Author: Akash/Rahul Page:346 of 645 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. ➢ Disconnect Transmission side 28 pole connector (X-201) and check below resistance at (X-201) connector terminal Measure Resistance (Ω) Component check Pin 1 (T_VALVE_PWR_123) to Pin 27(T_VALVE_4) 3 to 8 ok Internal, External wiring harness and Solenoid Pin 1(T_VALVE_PWR_123) to transmission housing > 100k ok Internal, External wiring harness and Solenoid Pin 27 (T_VALVE_4) to transmission housing > 100k ok Internal, External wiring harness and Solenoid ➢ Remove vehicle connector from TCU, Disconnect transmission circular connector and check below resistance at transmission circular connector Measure Resistance (Ω) Component check Pin 1 (T_VALVE_PWR_123 (X-111,1)) to transmission housing > 100k ok TCU and External wiring harness Pin 7 (T_VALVE_4) to transmission housing > 100k ok TCU and External wiring harness • Continuity Check Check continuity between pins/terminals of External and Internal wiring harness connector for specific solenoid and pressure sensor for which the DTC is triggered. DTC’s confirmation:- After rectification, clear all DTC’s and ensure the following points by referring TCU parameters using TML diagnostic tool before handing over to customer. • Drive the vehicle through all gears in both Automatic and Manual modes. • Ensure no DTC is active and Transmission Fault Lamp is OFF. Circuit Schematic Diagram:
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