NEXON NEW MCE-2 DCT BS VI DTC Troubleshooting Guide Version: 1.0 Date: 16-06-2023 Author: Akash/Rahul Page:528 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. Pin 23 (T_SPEED_PWR) to transmission housing >500k ok External wiring harness and speed sensor Pin 16(T_SPEED_1) to transmission housing >500k ok External wiring harness and speed sensor Pin 17(T_SPEED_2) to transmission housing >500k ok External wiring harness and speed sensor Pin 18(T_SPEED_3) to transmission housing >500k ok External wiring harness and speed sensor ➢ Remove vehicle connector from TCU, Disconnect speed sensor connector and check below resistance at speed sensor connector terminal Measure Resistance (Ω) Component check Pin 2 (T_SPEED_PWR) to transmission housing >500k ok TCU and External wiring harness Pin 1 (T_SPEED_1) to transmission housing >500k ok TCU and External wiring harness Pin1 (T_SPEED_2) to transmission housing >500k ok TCU and External wiring harness Pin 1 (T_SPEED_3) to transmission housing >500k ok TCU and External wiring harness • Continuity Check Check continuity between pins/terminals of connector for specific speed 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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