Abnormality detection device of shift position sensor

Details Abnormality detection device of shift position sensor Abnormality detection device of shift position sensor

2006-03-16

2010-11-16

Camby, Richard M. (Department: 3661)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Vehicle diagnosis or maintenance indication

C701S031000, C701S034000

Reexamination Certificate

active

07835833

ABSTRACT:
To detect a failure of a position contact outputting a contact signal, a change of a shift pattern defined by a combination of contact signals is monitored. Upon detection of the shift patterns belonging to a plurality of regions bridging a shift position corresponding to a selected position during an off period of the contact signal, a failure of the position contact is detected. As such, in a shift position sensor selecting a shift position by a combination of the contact signals from a plurality of position contacts, abnormality of the position contact can be detected reliably.

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