Vehicle meter unit

• US 20040153782A1
• Filed: 06/27/2003
• Published: 08/05/2004
• Est. Priority Date: 07/05/2002
• Status: Active Grant

• Current Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Original Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Inventors: Sato, Masaki, Fukui, Naoki, Takatsudo, Izumi, Kimura, Tamo
• Granted Patent: US 7,400,953 B2
• Time in Patent Office: Days
• US Class Current: 714/25
• CPC Class Codes: G01D 2207/30 Displays providing further information, in addition to measured values, e.g. status
• CPC Class Codes: G01D 7/00 Indicating measured values
• CPC Class Codes: G07C 2205/02 using a vehicle scan tool

Abstract

A vehicle meter unit has a control unit and a controller area network (CAN) constituting a communications network. On-vehicle systems such as an engine control system, anti-lock braking system and electric power steering system are also provided with CANs and fault diagnostic functions for decentralized control. Faults in the systems are displayed in fault codes through the control unit on a liquid crystal display on which the indications of an odometer and trip recorder are displayed.

Claims

1. A vehicle meter unit for receiving fault diagnostic information from systems, including an engine control system, an anti-lock braking system and an electric power steering system which have respective CAN controllers forming a communications network in the vehicle and fault diagnostic functions, and displaying the information, said vehicle meter unit comprising:

a CAN controller for communicating with said systems; and

a control unit for transmitting via said CAN controller a command to perform fault diagnosis to said systems, causing said systems to transmit fault codes based on the command, and directing to display the fault codes.

2. A meter unit according to claim 1, wherein said control unit is linked to said systems by radio.