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Vehicle trouble diagnosis system

A technology for diagnosing system and automobile faults, which is applied to vehicle parts, instruments, electrical digital data processing, etc., and can solve problems such as discomfort

Inactive Publication Date: 2010-02-10
DIESEL KIKI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since this can make the driver uncomfortable when the ignition is switched on, it is a problem

Method used

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  • Vehicle trouble diagnosis system
  • Vehicle trouble diagnosis system

Examples

Experimental program
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Embodiment Construction

[0014] Now refer to the embodiment of the present invention with reference to each picture.

[0015] figure 1 It is a circuit diagram of the car fault diagnosis system that is an example of the invention. exist figure 1 Among them, the reference number 1 represents the control micro -computers used to operate the unprecedented automotive internal combustion engine system, and the number 2 represents another micro -component computer that acts as a monitoring device used to monitor the control operation of micro -computer 1. In the configuration shown, micro -calciuster 1 and 2 monitor each other. Although the micro -calciuster 1 controls the internal combustion engine on the operation in this example, the present invention is not limited by this scheme, which also includes the use of micro -calciuster 1 pair of equipment in other types, such as the fuel injection system to operate the operation control.

[0016] Now explain the operation of micro -computers 2 used to monitor micr...

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Abstract

A vehicle trouble diagnosis system adapted to actuate a lamp (5) to give a trouble diagnosis indication in response to a CPU runaway detection signal (WDA) outputted from a microcomputer (2) for watching whether or not a control microcomputer (1) is running away, and adapted to intentionally output the CPU runaway detection signal (WDA) before execution of control by the microcomputer (1) for trouble diagnosis is started, wherein a transistor (4A) is kept turned-on until lighting is started for checking the lamp (5) after an ignition switch has been switched from off to on, so that the lamp (5) is in a continuously lighted state, thus preventing the lamp (5) from flickering during checkup.

Description

Technical field [0001] The invention involves a car failure diagnostic system that is used to diagnose the fault of computers used to control the internal combustion engine and other automotive systems and display the results of the fault diagnosis. Background technique [0002] Micro -meter -to -have internal combustion engine operations and other vehicle systems usually have a car failure diagnostic system to diagnose proper time faults to operate failure to operate the micro computers. When the failure diagnostic system finds failure such as the CPU stop (Hang Up), it notify the driver to the driver by the incentive lamp or other specified display parts. [0003] Some of these types of common fault diagnosis systems are equipped with a monitoring device that is separated from micro -computers to be diagnosed to monitor the operation of the control micro -computer. When the control micro -computer looks like it is operating normally, the monitoring device deliberately generates...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D45/00B60R16/02B60K35/00B60R16/023
CPCG06F11/325B60R16/0232G06F11/00
Inventor 松崎秀昭渡边恭成佐藤荣一川野智行
Owner DIESEL KIKI CO LTD