TURBINE SPEED SENSOR FAILURE DIAGNOSIS DEVICE OF AUTO TRANSMISSION IN VEHICLE AND TEMPORARY SHIFT METHOD THEREOF

摘要

The present invention relates to a turbine speed sensor fault diagnosis device of a vehicle automatic transmission and a temporary shift method according to the failure, and to determine the failure state of the turbine speed sensor to determine the measured value of the engine speed (rpm) instead of the measured value of the turbine speed sensor The purpose of this is to perform 3- 4 shifting normally.;In order to achieve the above object, the present invention provides a turbine speed sensor failure diagnosis apparatus for an automatic transmission for a vehicle including a sensor unit 5 including various sensors for measuring a state of an engine and an automatic transmission, and the sensor unit 5. Algorithm that receives the measured value from the engine and shifts the automatic transmission according to the vehicle driving condition and performs the 3- 4-speed shift by using the engine speed instead of the measured value of the turbine speed sensor when the turbine speed sensor breaks down. TCU (1) having a and characterized in that consisting of a display (6) to inform the driver when the failure of the turbine speed sensor determined from the TCU (1).