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Controller area network message transmission disable testing systems and methods

  • US 8,831,821 B2
  • Filed: 03/21/2011
  • Issued: 09/09/2014
  • Est. Priority Date: 12/17/2010
  • Status: Active Grant
First Claim
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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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