Distributed diagnostics architecture
First Claim
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1. A distributed on-board diagnostic (OBD) architecture for a control system of a vehicle, comprising:
- a plurality of control modules that are in communication with one another; and
a designated master OBD control module that is one of said plurality of control modules, wherein said master OBD control module executes functions that a remainder of said plurality of control modules are not configured to execute including arbitrating and storing OBD freeze frame data and determining OBD status flags of said remainder of said plurality of control modules.
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Abstract
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.
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Citations
40 Claims
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1. A distributed on-board diagnostic (OBD) architecture for a control system of a vehicle, comprising:
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a plurality of control modules that are in communication with one another; and a designated master OBD control module that is one of said plurality of control modules, wherein said master OBD control module executes functions that a remainder of said plurality of control modules are not configured to execute including arbitrating and storing OBD freeze frame data and determining OBD status flags of said remainder of said plurality of control modules. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 38)
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13. A method of distributing on-board diagnostic (OBD) functions in a control system of a vehicle comprising:
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interconnecting a plurality of control modules for communication with one another; designating one of said plurality of control modules as an OBD master control module; and executing functions using said OBD master control module that a remainder of said plurality of control modules are not configured to execute including arbitrating and storing OBD freeze frame data and determining OBD status flags of said remainder of said plurality of control modules. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 39)
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25. A distributed on-board diagnostic (OBD) architecture for a control system of a vehicle, comprising:
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a first plurality of control modules that are in communication with one another via a first communications bus; a second plurality of control modules that are in communication with one another via a second communications bus; and a designated master OBD control module that is one of said first and second pluralities of control modules, wherein said master OBD control module executes functions that a remainder of said first and second pluralities of control modules are not configured to execute including arbitrating and storing OBD freeze frame data and determining OBD status flags of said remainder of said first and second pluralities of control modules. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 40)
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Specification