公开(公告)号：US20190302165A1

公开(公告)日：2019-10-03

申请号：US16446122

申请日：2019-06-19

Applicant: DELPHI TECHNOLOGIES IP LIMITED

Inventor： SEYED R. ZARABADI ,  DANIEL C. PENROD ,  MARK W. GOSE

IPC: G01R31/02 ,  F02D41/22 ,  G01R31/08 ,  G01R17/02 ,  F02D41/14 ,  G01R1/20

Abstract: A method is proved for pinpointing a short-circuit in a wide-range air/fuel sensor having one or more sensor-terminals that include a reference-terminal, a pump-terminal, a return-terminal, and a tag-terminal. The method includes controlling a connection of a source of electric current to the one or more sensor-terminals; determining one or more status-values based on signals present at the sensor-terminals; and determining a sensor-status of the wide-range air/fuel sensor based on the connection of source of electric current and the one or more status-values.