NEXON NEW MCE-2 DCT BS VI DTC Troubleshooting Guide Version: 1.0 Date: 16-06-2023 Author: Akash/Rahul Page:162 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. Below table reflects the signals for each solenoid and pressure sensor and range of acceptable resistance. ➢ Disconnect Transmission side 28 pole connector and check below resistance at connector terminal Measure Resistance (Ω) Component check Pin 15 (T_VALVE_3_HS) to Pin 26(T_VALVE_3_LS) 3 to 8 ok Internal, External wiring harness and Solenoid Pin 15 (T_VALVE_3_HS) to transmission housing > 100k ok To check external and internal wiring harness Pin 26 (T_VALVE_3_LS ) 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 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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