TIGOR AMT

TIAGO/TIGOR AMT Gasoline DTC Troubleshooting Guide Version: 4.0 Date: 18-04-2017 Author: Sathi/Anupama Page: 358 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. 123. P185B -07: Clutch Stroke Selftuning – Error Overview: ISO Code P185B-07 Customer Symptom Transmission Fault Lamp ON, No gearshifts , Vehicle not picking up Fault Effects (On Vehicle) No gearshifts , Vehicle not picking up Lamp Status (If Any) Transmission Fault Lamp ON Fault Detection Condition This fault gets detected after Ignition On during a Grid selftuning procedure or during normal operation if TCU detects that the Clutch stroke service procedure is not done or not successfully completed Normal Operating Condition Clutch Stroke selftuning Procedure is successfully completed at End of line or after service part replacements(refer service manual) that require such procedure. Probable Trouble Area Clutch assembly Healing Condition Immediately after detection of valid Selftuning procedure completion. Component Details: Clutch Stroke selftuning procedure is automatically performed by TCU when Grid selftuning procedure is requested through a diagnostic or End of line tool, it is required by the TCU to learn the total range of travel of the clutch between its end positions. Preliminary Checks: 1) Before proceeding with rectification, ensure no other DTC in TCU except from a set of – P1844, P080A, and P185B. If there are any other DTC’s they must be rectified first. 2) Before re-initiating the procedure check the following conditions: a> Ignition key is ON b> Transmission in neutral c> Healthy battery d> Engine speed is 0 e> Vehicle speed is 0 f> Check correct hydraulic pressure with diagnostic tool (38-51 bar) g> Brake is not pressed 3) Check for damage or back out of pins at TCU connector. 4) Visibly check for damage/mis-assembly of clutch actuator/components 5) Visibly check for any damage to kit/oil leakage/other kit components. 6) Check for loose fitting TCU/EMS/ and clutch position sensor connectors 7) Check correct fitment of ground cable connections on vehicle chassis. Trouble Shooting:- Step Checks IF YES IF NO 1. Connect the TCU diagnostic tool and check for active DTC’s, are there any active DTC’s other than P1844, P080A or the current one? Rectify the other DTC’s first. After clearing DTC’s, run the procedure again. Recheck from step 1 Go to Step 2 2 Initiate the Grid selftuning procedure with the diagnostic tool, wait for ~ 2 minutes and ask for routine result. Is grid selftuning procedure successfully executed? Go to Step 3  If Grid selflearning failed with error code 0E Go to Step 4  If other error codes refer DTC P1844