Controller area network message transmission disable testing systems and methods
First Claim
1. An inhibit path diagnostic system comprising:
- a first control module that comprises a message output and transmits a first message from the message output to a controller area network (CAN) via a message transmission path;
an inhibit path circuit that includes the message transmission path; and
a second control module that transmits a disable control signal to the inhibit path circuit to disable the message transmission path,wherein the first control module transmits a second message from the message output subsequent to and based on the transmitting of the disable control signal, andwherein at least one of the first control module and the second control module detects a fault of the inhibit path circuit subsequent to the transmitting of the second message and based on a feedback signal from the CAN.
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Accused Products
Abstract
An inhibit path diagnostic system includes a first control module. The first control module includes a message output and transmits a first message from the message output to a controller area network (CAN) via a message transmission path. An inhibit path circuit includes the message transmission path. A second control module transmits a disable control signal to the inhibit path circuit to disable the message transmission path. The first control module transmits a second message from the message output subsequent to and based on the transmitting of the disable control signal. At least one of the first control module and the second control module detects a fault of the inhibit path circuit subsequent to the transmitting of the second message and based on a feedback signal from the CAN.
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Citations
21 Claims
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1. An inhibit path diagnostic system comprising:
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a first control module that comprises a message output and transmits a first message from the message output to a controller area network (CAN) via a message transmission path; an inhibit path circuit that includes the message transmission path; and a second control module that transmits a disable control signal to the inhibit path circuit to disable the message transmission path, wherein the first control module transmits a second message from the message output subsequent to and based on the transmitting of the disable control signal, and wherein at least one of the first control module and the second control module detects a fault of the inhibit path circuit subsequent to the transmitting of the second message and based on a feedback signal from the CAN. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 21)
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13. A diagnostic method comprising:
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transmitting a first message from a message output of a first control module over a message transmission path to a controller area network (CAN); generating a disable control signal via a second control module to disable the message transmission path while performing a diagnostic test on at least one of the message transmission path and an inhibit path circuit, wherein the inhibit path circuit includes the message transmission path; transmitting the disable control signal to the inhibit path circuit subsequent to the transmitting of the first message; transmitting a second message from the first control module to the CAN subsequent to and based on the transmitting of the disable control signal; and detecting a fault associated with the inhibit path circuit based on a feedback signal from at least one of inhibit path circuit and the CAN. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification