Self Diagnosis

The task of the self-diagnosis feature is to detect malfunctions in the control unit or in the DME components and to initiate subsequent defect code storage. Troubleshooting is assisted by the self-diagnosis function in the form of status monitoring and component activation. In the case of failure of the engine temperature sensor, intake air temperature sensor, air mass meter or oxygen sensor, the relevant DME control unit provides substitute values. These substitute values are cancelled once again when normal operation can be resumed.