Electronic control apparatus for vehicle

Details Electronic control apparatus for vehicle Electronic control apparatus for vehicle

2011-06-07

2011-06-07

Mancho, Ronnie (Department: 3664)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Vehicle diagnosis or maintenance indication

C702S185000, C714S047300, C714S048000

Reexamination Certificate

active

07957862

ABSTRACT:
A plurality of electronic control units (ECU) are classified under a plurality of ECU groups. A relay is provided for each ECU group, and connected between each ECU in a corresponding group and a power supply. Connection is established between respective ECUs by a communication network. When power is turned ON, each ECU outputs a flag indicating its own communication enabled state as long as there is no error in the communication function. A relay error detection portion detects, based on communication state information indicating whether each ECU is in a communication enabled state or communication disabled state, an error of the relay when the communication state information between ECU groups is inconsistent. Thus, an error in a relay that is provided for each group can be detected with a simple configuration.

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Aug. 31, 2010 Decision to Grant Patent issued in Japanese Patent Application No. 2005-161190 (with translation).

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