Gm Global Technolgoy Operations, Inc.

Electronic Data Systems Corporation

Jayanthi Padmanabhan

Andrew M Zettel

Wei D Wang

Peter E Wu

Daniel P Grenn

Aniket P Kothari

Leonard G Wozniak

Marek L Wilmanowicz

Rick H Schroeder

Michael J Taljonick

Michael J Miller

A distributed on-board diagnostic (OBD) architecture for a control system of a vehicle includes a plurality of control modules that are in communication with one another and a designated master OBD control module that is one of the plurality of control modules. The master OBD control module performs functions that a remainder of the plurality of control modules are incapable of performing including at least one of arbitrating a malfunction indicator lamp (MIL) state, arbitrating and storing OBD freeze frame data and determining OBD status flags of the remainder of the plurality of control modules.

Distributed diagnostics architecture

A method and article of manufacture are provided to monitor a sensing system operative to monitor electrical current in a transmission line between an electrical storage device and an electrical machine. The sensing system comprises first and second sensors, operative to monitor first and second ranges of electrical current. The method comprises determining outputs of the first and second sensors are valid, and comparing outputs of the first and second sensors when current is substantially zero. The method comprises comparing magnitudes of the outputs of the first and second sensors when the monitored electrical current, and monitoring polarity of each of the outputs of the first and second sensors.

Method and apparatus for detecting faults in a current sensing device

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Troy, MI, United States of America

Jayanthi Padmanabhan