Self-diagnosis display unit

• US 7,319,926 B2
• Filed: 01/22/2003
• Issued: 01/15/2008
• Est. Priority Date: 01/29/2002
• Status: Active Grant

• Current Assignee: Yamaha Hatsudoki Kabushiki Kaisha (Yamaha Corporation)
• Original Assignee: Yamaha Hatsudoki Kabushiki Kaisha (Yamaha Corporation)
• Inventors: Suzuki, Masashi
• Primary Examiner(s): Chin; Gary
• Application Number:
  US10/501,800
• Publication Number:
  US 20050119808A1
• Time in Patent Office: 1,819 Days
• Field of Search: 701/29, 701/31, 701/34, 701/101, 701/102, 701/107, 340/438, 340/439
• US Class Current: 701/31
• CPC Class Codes: F02D 2041/228 Warning displays
• CPC Class Codes: F02D 41/062 for starting F02D41/061 takes precedence
• CPC Class Codes: F02D 41/22 Safety or indicating devices for abnormal conditions in air/fuel ratio feedback systems F02D41/1495, in electric control linkage F02D11/107, in purge control systems F02M25/0809
• CPC Class Codes: F02N 15/10 Safety devices not otherwise provided for
• CPC Class Codes: Y02T 10/40 Engine management systems

Abstract

To a self-diagnosis indication system for performing a startup disablement indication when an abnormal condition is self-detected at the time of start up without using on/off signals from a starter switch. There is provided a self-diagnosis indication system for outputting an operation control signal from an ECU by allowing signals from respective types of sensors for detecting an operating condition and a crank pulse signal for detecting a rotation of a crankshaft to enter the ECU and outputting a startup disablement indication signal in a state that an abnormal condition is self-detected at the time of startup, the self-diagnosis indication system being characterized in that a startup disablement indication signal is outputted when a crank pulse signal is inputted in the state that an abnormal condition is self-detected at the time of startup.

Claims

1. A self-diagnosis indication system for outputting an operation control signal from an ECU by allowing signals from respective types of sensors for detecting an operating condition of an engine and a crank pulse signal for detecting a rotation of a crankshaft to enter the ECU and outputting a startup disablement indication signal in a state that an abnormal condition of the engine is self-detected at the time of startup, the self diagnosis indication system being characterized in that;

a startup disablement indication signal is determined when said crank pulse signal is inputted in the state that said abnormal condition is self-detected.

2. A self-diagnosis indication system as set forth in claim 1, having abnormality indicating means for indicating the abnormal condition so self-detected, whereby said startup disablement condition is indicated by changing indication modes of the abnormality indicating means by the startup disablement indication signal.