TIGOR AMT

TIAGO/TIGOR AMT Gasoline DTC Troubleshooting Guide Version: 4.0 Date: 18-04-2017 Author: Sathi/Anupama Page: 53 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. 16. P0805-05: Clutch Position Sensor Circuit– PWM Duty high Overview: ISO Code P0805-05 Customer Symptom Transmission Fault Lamp ON, Loss of power while driving. Engine not cranking Engine stalling at low vehicle speeds No gearshift Fault Effects (On Vehicle) Transmission going automatically to neutral while driving. Engine not cranking Engine stalling at low vehicle speeds No gearshift No EOL self-tuning. Lamp Status (If Any) Transmission Fault Lamp ON Fault Detection Condition This fault gets detected after Ignition On when the Engine is not cranking and Sensor & battery Supply voltage is in proper range and the signal duty cycle is found to be higher than acceptable threshold. Normal Operating Condition Clutch Position signal will be in a valid range corresponding to the total travel of the Clutch actuator between fully open and closed positions. Signal has valid period and duty cycle. Probable Trouble Area Sensor damage (internal)/ TCU internal damage Healing Condition 50 milliseconds after valid sensor signal Component Details: The Clutch Position sensor is PWM type sensor which outputs a signal duty cycle in proportion to the Clutch actuator position. Preliminary Checks: 1) If this DTC occurs in combination with DTC P1852, refer remedy for P1852. 2) Loose/ Damaged TCU system connector (12 pin). 3) Check for any visible damage to TCU pins, clutch sensor and its pins. 4) Check correct fitment of ground cable connections on vehicle chassis. Trouble Shooting:- On first occurrence, clear the DTC and drive the vehicle for 2-3 kms, read the DTC again. On fault confirmed again, follow below steps. Step Checks IF YES IF NO 1. Replace the clutch position sensor (refer fig below). Is the problem rectified? Check for confirmation steps Replace the TCU 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. Circuit Schematic Diagram: