NEXON NEW MCE-2 DCT BS VI DTC Troubleshooting Guide Version: 1.0 Date: 16-06-2023 Author: Akash/Rahul Page:468 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. ➢ 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 3 (T_VALVE_2) 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 Pin 15 (T_VALVE_1_HS) to transmission housing > 100k ok TCU and External wiring harness Pin 4 (T_VALVE_1_LS) to transmission housing > 100k ok TCU and External wiring harness Pin 16 (T_VALVE_3_HS) to transmission housing > 100k ok TCU and External wiring harness Pin 6 (T_VALVE_3_LS) 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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