DIAGNOSIS METHOD OF AN AUXILIARY DEVICE FOR SLOPING ROAD CAPABLE OF PREVENTING VEHICLES FROM BEING SLIPPED AT A STARTING POINT OF SLOPING ROAD AND A SYSTEM THEREOF

摘要

PURPOSE: A diagnosis method of an auxiliary device for sloping road and a system thereof are provided to diagnose malfunction of the auxiliary device for sloping road by analyzing the relationship between brake off signal of an engine controller and an output signal of the auxiliary device for sloping road when a vehicle is started at a sloping road.;CONSTITUTION: An EHS (easy hill start) diagnosing method of a diagnosis method of an auxiliary device for sloping road is a diagnosis method of environmentally-friendly vehicles in which an engine controller, hybrid controller and a sloping road oscillation sub controller are connected by CAN (controller area network) communication. A diagnosis method of an auxiliary device for sloping road comprises the following steps: (S103) determining whether starting request is detected by analyzing driving information offered from an engine controller by a hybrid controller while a vehicle is stopped in a sloping road; (S104) outputting release signals through a sloping road oscillation sub controller if starting request is detected by the hybrid controller; (S106) and determines malfunction of the sloping road oscillation sub controller by analyzing relationship between release signal output from the sloping road oscillation sub controller and brake operation signal offered from the engine controller.;COPYRIGHT KIPO 2013;[Reference numerals] (AA) Start; (BB,DD) No; (CC,EE) Yes; (FF) End; (S101) Stop state; (S102) Detect driving information of an engine controller; (S103) Request start?; (S104) Output release signals through a sloping road oscillation sub controller; (S105) Check brake signal of the engine controller; (S106) Brake signal of the engine controller is 1 when the release signal is converted into 1?; (S107) Judge normal operation; (S108) Judge trouble; (S109) Store code, output message; (S110) Prohibit idle stop entrance