A METHOD FOR PREVENTING ENGINE FROM STOPPING DUE TO CHATTERING OF TPS CONNECTOR TERMINAL

摘要

A method is provided to achieve in-advance prevention against engine stoppage by entering limp home mode if variation of TPS voltage is caused due to chattering. A method for preventing engine stoppage caused due to chattering of a TPS connector terminal, comprises a step(S1 to S3) of permitting an ECU to monitor whether a voltage signal output from a TPS has a predetermined frequency, and calculating the frequency if the frequency is sensed; a step(S4 to S6) of permitting the ECU to calculate a slope of TPS voltage if the calculated frequency falls within a predetermined range, and comparing the slope value with a reference value; a step(S7) of judging whether the slope of TPS voltage is resulted from an actual pedaling, by monitoring air flow rate, if the slope value is larger than the reference value; and a step(S9) of entering a limp home mode if the monitored air flow rate differs from the variation of TPS voltage.