NEXON AMT BS VI DTC Troubleshooting Guide Version: 2.3 Date: 23-07-2019 Author: Rahul N Page: 351 of 442 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. 3 a> Run IO control on Clutch, shift and Gear Electrovalves, if any Control is failing, rectify referring respective DTC. In case problem not located, next step b b> Unmount the TCU from the valve body and investigate any loose contacts/damaged valves/ sensor connectors. Is any kit component damaged? c> Disassemble kit from transmission, check for correct kit assembly and inspect transmission components for any obstruction to actuator movements/damaged teeth/synchro rings/forks etc. Is problem located in transmission? Replace/Rectify the problematic transmission component Replace the transmission (including kit) 4 a> Recheck list mentioned in point 2 of “Preliminary Checks” and check for any missing input from the list (for example brake switch problem, low battery voltage etc) Is problem located? Rectify the problem Replace the relevant component 5 a>Check the AMT Clutch lever interface b>Disassemble Clutch assembly, check for correct clutch assembly and inspect clutch for any obstruction to actuator movements/incorrect clutch stroke/damaged beleville, springs/ etc. b> Mechanical damage to the clutch Is problem located in clutch assembly? Replace/Rectify the problematic clutch component Recheck the above steps Replace the relevant component 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. • After key ON with TML TCU diagnostic tool connected, monitor the “Selflearned Mask” and confirm that variable “Successful EOL Executed” is TRUE. • 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: Component Location & Image:- Connector Location: -
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