Method and system for diagnosing failure of oil pressure sensor

摘要

A method and a system that diagnose failure of an oil pressure sensor that senses or detects an operating oil pressure in a target device (e.g., a hydraulic clutch) using oil pressure. The method includes a controller that is configured to store an ignition off time that an ignition is turned off and detect an ignition on time that the ignition is turned on after the ignition has been turned off. In addition, the controller is configured to calculate an elapsed time from the ignition off time to the ignition on time and determine whether the elapsed time is equal to or greater than a predetermined time. When the elapsed time is equal to or greater than the predetermined time the controller is configured to diagnose oil pressure sensor failure and when the elapsed time is less than the predetermined time, stop diagnosing failure of the oil pressure sensor.

主权项

1. A method of diagnosing failure of an oil pressure sensor that senses oil pressure in a target device, comprising:
storing, by a controller, an ignition off time at which an ignition is turned off; detecting, by the controller, an ignition on time at which the ignition is turned on after the ignition has been turned off; calculating, by the controller, an elapsed time from the ignition off time to the ignition on time; determining, by the controller, whether the elapsed time is equal to or greater than a predetermined time; executing a diagnostic routine, by the controller, to detect failure of the oil pressure sensor when the elapsed time is equal to or greater than the predetermined time; and stopping, by the controller, the diagnosing failure of the oil pressure sensor when the elapsed time is less than the predetermined time.