NEXON NEW MCE-2 DCT BS VI DTC Troubleshooting Guide Version: 1.0 Date: 16-06-2023 Author: Akash/Rahul Page:603 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. 4. Check for Pin back out and TCU CAN H and CAN L pin at MSS and TCU end Trouble Shooting:- Step Checks IF YES IF NO 1. Check for CAN continuity wiring pin continuity between TCU and MSS Clear the DTC and check if the DTC does not come back Go to step 2 2 Check if latest HW and SW is updated for MSS and TCU Clear the DTC and check if the DTC does not come back Go to step3 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 schematics:- 186. U2123-81 Genral defect based on quality flag Over view : ISO Code U2123 -81 Customer Symptom • Manual mode inhibited • Paddle shifter inhibited.
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