Patent ID: 6206489
Filing Date: 2001-03-27
Classification: B60T

Abstract:
A method for testing a braking system, the braking system including electrically operable valve arrangements, each of the electrically operable valve arrangements being allocated to a respective one of wheel brakes, the method comprising the steps of:electrically detecting a braking input generated by a driver;converting the braking input into at least one driving signal;controlling a pressure of a pressure supply in the braking system using the electrically operable valve arrangements, the pressure being controlled as a function of the at least one driving signal to generate wheel-brake pressure values;before a start of travel, performing a self-test of the braking system, the self-test including a plurality of test phases, wherein first predetermined actuations of the electrically operable valve arrangements and second predetermined actuations of the pressure supply are allocated to the test phases;during the self-test and for each of the respective wheel brakes, checking an operatability of a respective one of the electrically operable valve arrangements to detect a fault, wherein the operability is checked by comparing the wheel-brake pressure values with predetermined pressure values at an end of the test phases, the fault being detected if a pressure deviation is determined in at least one of the respective wheel brakes; andinitiating a secondary braking operation if the fault is detected.