Abstract: A circuit configuration providing a diagnostic signal for a power switching device which switches a load has a test circuit, a filter device, a validation device, and a coding device. The test circuit tests the power switching device and generates error symptoms for characterizing error types of different priorities. The filter device, depending on an activation signal activating the power switching device, provides a validity signal for the generated error symptoms. The validity signal specifies the validity of the corresponding error symptom in each case. The validation device validates a generated error symptom depending on the associated validity signal in each case and validates the validated activation signal and from this generates a group of is states and the associated complementary states. The coding device codes the states and complementary states depending on the priorities of the error types assigned to the states and complementary states.

Abstract: For the purpose of validating fault symptoms appearing at driver outputs, a symptom validation unit is provided, within a final stage, which undertakes a validation or a preliminary validation, as applicable, on the basis of a classification of symptoms. By assigning the item of validation data “invalid” to symptoms which cannot be unambiguously identified, it is possible to suppress the further consideration of the symptoms, or to initiate further diagnoses of the final stage output concerned, as appropriate.

Abstract: A method for monitoring a driver output has is provision for actively influencing the driver output in order to perform fault analysis. To avoid a component addressed by the driver being influenced as a result of the active influencing of the driver output although no fault or only a sporadic fault has occurred, provision is made in accordance with the invention for active influencing of the driver output only to occur when a fault state has occurred at the driver output for a specified period of time.

Abstract: The invention relates to a method for the diagnosis of driver outputs (20) and to a diagnosis pulse manager (10) that can supply a pulse to a driver output (20) in order to carry out a diagnosis of said driver output. As a plurality of diagnosis pulses may be required simultaneously for the system requirements (12), a diagnosis pulse requirement register (14) and a diagnosis pulse execution register (16) are provided such that a plurality of simultaneous requirements (12) can be stored. On the basis of the buffering of requirements (12), a plurality of stored pulse requirements can be successively taken into account according to pre-determined rules.

Abstract: For the purpose of validating fault symptoms appearing at driver outputs (10), a symptom validation unit (14) is provided, within a final stage (18), which undertakes a validation or a preliminary validation, as applicable, on the basis of a classification of symptoms. By assigning the item of validation data “invalid” to symptoms which cannot be unambiguously identified, it is possible to suppress the further consideration of the symptoms, or to initiate further diagnoses of the final stage output (10) concerned, as appropriate.

Abstract: A circuit configuration providing a diagnostic signal for a power switching device which switches a load has a test circuit, a filter device, a validation device, and a coding device. The test circuit tests the power switching device and generates error symptoms for characterizing error types of different priorities. The filter device, depending on an activation signal activating the power switching device, provides a validity signal for the generated error symptoms. The validity signal specifies the validity of the corresponding error symptom in each case. The validation device validates a generated error symptom depending on the associated validity signal in each case and validates the validated activation signal and from this generates a group of is states and the associated complementary states. The coding device codes the states and complementary states depending on the priorities of the error types assigned to the states and complementary states.

Abstract: A method for monitoring a driver output has is provision for actively influencing the driver output in order to perform fault analysis. To avoid a component addressed by the driver being influenced as a result of the active influencing of the driver output although no fault or only a sporadic fault has occurred, provision is made in accordance with the invention for active influencing of the driver output only to occur when a fault state has occurred at the driver output for a specified period of time.