TIGOR AMT

TIAGO/TIGOR AMT Gasoline DTC Troubleshooting Guide Version: 4.0 Date: 18-04-2017 Author: Sathi/Anupama Page: 408 of 427 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. Generic Troubleshooting Guidelines There may be general failures in the vehicle systems where it may not be possible to locate and diagnose the problem by reading a Diagnostic trouble code (DTC), some examples may be: 1) No diagnostic tool connection 2) Permanent CAN errors. 3) TCU Power/Crank input/Grounding problems 4) TCU internal damages In such cases, it will be helpful to diagnose the general health of the transmission AMT kit by following below guidelines. Sno Test Procedure Expected Comments 1 Check Gear shifting at engine OFF condition Press brake, move lever to R/A Reverse/1 st gear gets engaged If successfully shifting for a number of times then hydraulics are OK, check step 5 onwards 2 Hydraulic Pump supply Check Electric motor connections Hydraulic pump turning ON makes an audible humming sound each ign key ON. 3 Check hydraulic pressure Read Pressure using the diagnostic tool Should be around 38 bar If hydraulic pump turning ON is audible but pressure rise is not observed, kit should be visually checked for leakage. 4 TCU ignition, battery supply fuses (10 A & 2X30 A) & TCU ground Available on fuse box in engine compartment, Check ground Pin 1&2 of TCU 5 Cranking (K50) wire request 12Volt on Pin 14 on TCU while cranking TCU enables cranking only when it receives K50 wired request 6 CAN Line fault CAN H-CAN H and CAN L – CAN L continuity and resistance continuity between EMS-TCU and total resistance 60 ohm