Vehicles fault diagnostic systems and methods
First Claim
1. A method for diagnosis of a vehicle comprising:
- monitoring a first plurality of distributed sensor signals in a first control unit;
monitoring a second plurality of distributed sensor signals in a second control unit;
determining in the first control unit a first diagnostic trouble code (first DTC) at a first instant of time;
determining in the second control unit a second DTC at a second instant of time, the second instant of time being within a predetermined time of the first instant of time;
storing a first dataset in a first storage media when the first DTC is determined, the first dataset including the first DTC and a predetermined first group of the first plurality of sensor signals; and
storing the second DTC in the first dataset in the first storage media when the second DTC is determined, the stored first dataset being transferable to a remote fault-diagnostic module at a later instant of time to be analyzed.
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Accused Products
Abstract
A method for diagnosis of a vehicle includes monitoring a first plurality of distributed sensor signals input to a first control unit, monitoring a second plurality of distributed sensor signals input to a second control unit, determining a first diagnostic trouble code (first DTC) at a first instant of time, determining a second DTC at a second instant of time, storing a first dataset in a first storage media and storing the second DTC in the first dataset. The second instant of time is within a predetermined time of the first instant of time. The first dataset corresponds to the first instant in time, and the stored first dataset is transferred to a remote fault-diagnostic module at a later instant of time. The first dataset includes the first DTC, a predetermined first group of sensor signals associated with either the first or second control unit, and the second DTC.
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Citations
13 Claims
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1. A method for diagnosis of a vehicle comprising:
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monitoring a first plurality of distributed sensor signals in a first control unit;
monitoring a second plurality of distributed sensor signals in a second control unit;
determining in the first control unit a first diagnostic trouble code (first DTC) at a first instant of time;
determining in the second control unit a second DTC at a second instant of time, the second instant of time being within a predetermined time of the first instant of time;
storing a first dataset in a first storage media when the first DTC is determined, the first dataset including the first DTC and a predetermined first group of the first plurality of sensor signals; and
storing the second DTC in the first dataset in the first storage media when the second DTC is determined, the stored first dataset being transferable to a remote fault-diagnostic module at a later instant of time to be analyzed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system for vehicle fault diagnosis comprising a data link, a plurality of electronic control units (ECUs) coupled to the data link and a recording module, wherein:
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the recording module is one of the ECUs coupled to the data link and incorporated within one of the plurality of ECUs;
each of the ECUs is capable of monitoring a corresponding plurality of distributed sensor signals and transmitting a corresponding fault trigger over the data link when a corresponding fault type is detected;
the recording module includes a circuit capable of determining diagnostic trouble codes (DTCs) when corresponding fault triggers are received from any of the ECUs and capable of storing a first dataset in a first storage media, the first dataset including plural DTCs determined from a corresponding plurality of fault triggers that are received between a first instant of time and a second instant of time, the second instant of time being within a predetermined time of the first instant of time. - View Dependent Claims (13)
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Specification