Tiago AMT Routine Procedure for Component replacement Version: 1.0 Date: 04-Jan-17 Author: Suraj Anupama Gore Page: 6 of 18 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. 6.2 Routine Procedure for TCU replacement 1. The precondition for “Hydraulic Circuit Depressurization” routine as are as below: a. Ignition ON b. Gear box in Neutral c. Engine is OFF d. Press brake during Routine. 2. Perform “Hydraulic Circuit Depressurization” routine in service Tool. 3. After the above routine, ensure power latch of 30 sec.(Ignition should be OFF for 30 sec) 4. Before replacing TCU which is present in vehicle, read the data from TCU through “Read Statistical Data” in Service Tool. 5. Store the data in Diagnostic tool. 6. Remove the two connectors from TCU. 7. Replace the new TCU. 8. Connect all connectors to the TCU. 9. Connect the Diagnostics tool to OBD connector. 10. Perform “Write Statistical Data” routine in Service Tool. 11. Switch OFF and then switch ON Ignition. 12. Write the VIN number inside the TCU. 13. The precondition for “Grid Self Tuning” routine as are as below: a. Ignition ON b. Gear box in Neutral c. Engine is OFF 14. Perform “Grid Self Tuning” routine through service Tool. 15. After the above routine, ensure power latch of 30 sec (Ignition should be OFF for 30 sec). 16. Turn On the Ignition. Then crank the engine and ensure that engine is running. 17. Ensure that following precondition “Clutch kiss point self-tuning“ routine as are as below: a. Ignition ON b. Gear box in Neutral c. Engine is running in idle. 18. Perform “Clutch kiss point self-tuning“ routine through service Tool 19. After the above routine, ensure power latch of 30 sec (Ignition should be OFF for 30 sec). 20. Switch on IGN, Clear DTC and Check the DTC if any.
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