TIGOR AMT

TIAGO/TIGOR AMT Gasoline DTC Troubleshooting Guide Version: 4.0 Date: 18-04-2017 Author: Sathi/Anupama Page: 333 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. 111. P184D- 01: Electro valves Driver 2– Thermal warning Overview: ISO Code P184D- 01 Customer Symptom Transmission Fault Lamp ON, No gearshifts , Vehicle not cranking, Vehicle not picking up, sudden shift to neutral while driving, engine stopping, gear shift request by lever disabled Fault Effects (On Vehicle) No gearshifts , Vehicle not cranking, Vehicle not picking up, sudden shift to neutral while driving,engine stopping, gear shift request by lever disabled Lamp Status (If Any) Transmission Fault Lamp ON Fault Detection Condition This fault gets detected after Ignition On if the Electro valve drivers report a thermal warning to the TCU. Normal Operating Condition Electro valve drivers report a normal functioning to the TCU. Probable Trouble Area TCU damage Healing Condition 50 milliseconds after valid signal Component Details: The Problem may occur due to an internal damage to TCU. Preliminary Checks: 1) Battery voltage 2) Check for damage or back out of pins at TCU connectors. 3) Check correct fitment of ground cable connections on vehicle chassis (tightness, corrosion of mounting bolts etc.) . Trouble Shooting:- Step Checks IF YES IF NO 1 At the first instance of the fault, clear the DTC and run the vehicle in all gears for about 10 kms, does the fault recur? Go to Step 2 Release the vehicle to the customer after final drive test 2 Check Battery and Ignition supplies at pins 1,3and 5 respectively. Both are correct? Go to Step 3 rectify harness connections as per the circuit schematic 3 Is there any pin back out/damage/rust/oxidation observed on TCU Connector? Clean or repair or replace connector Go to Step4 4 Fault Still Persists? Replace TCU Follow the steps again for reconfirmation 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.