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ELECTRONIC CONTROL UNIT FOR VEHICLE

  • US 20120173071A1
  • Filed: 09/14/2010
  • Published: 07/05/2012
  • Est. Priority Date: 09/17/2009
  • Status: Active Grant
First Claim
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1. A vehicle electronic control unit comprising:

  • a first microcomputer; and

    a second microcomputer capable of transmitting and receiving a signal to and from the first microcomputer, whereinone of the first microcomputer and the second microcomputer outputs a voltage signal that indicates a voltage at a high level or a low level to the other microcomputer, the other microcomputer detects a high-time during which the voltage of the voltage signal is at the high level, performs a self diagnosis according to the detected high-time, and outputs a result of the self diagnosis to the one microcomputer, and the one microcomputer diagnoses the other microcomputer based on a result of the self diagnosis.

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