Electrical coupling condition examining method for inductive load in motor vehicles involves detecting characteristic voltage pulse to determine if error condition is or is not present

摘要

The method entails measuring the voltage between coupling nodes (K1,K2) to which an inductive load (3) is coupled. A characteristic voltage pulse is detected by reducing the magnetic flux across the inductive load. An error condition is determined to be present if the characteristic voltage pulse is not detected within a predetermined time duration. No error condition is determined to be present if the characteristic voltage pulse arises.