NEXON NEW MCE-2 DCT BS VI DTC Troubleshooting Guide Version: 1.0 Date: 16-06-2023 Author: Akash/Rahul Page:41 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. 2. If the fault is still active, change the transmission wiring harness. Clear the DTC & check if the DTC becomes active again. Go to step 3 3 3. Replace one speed sensor at the time. Check if the DTC becomes inactive. Replace the sensor that caused the DTC. Clear the DTC & check if the DTC becomes active again. Go to step 4 4 Replace the TCU if the problem persists & flash the adaption data from the previous TCU. Clear the DTC • Resistance Check ➢ Disconnect connector Transmission side connector and check below resistance at transmission side connector terminal Measure Resistance (Ω) Component check 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 23 (T_SPEED_PWR) to transmission housing >500k ok TCU and External wiring harness Pin 16(T_SPEED_1) to transmission housing >500k ok TCU and External wiring harness Pin 17 (T_SPEED_2) to transmission housing >500k ok TCU and External wiring harness Pin 18(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.
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