Fault diagnosis system for automotive electronic devices
First Claim
1. In an automobile having a plurality of electronic devices, each of which is provided with a sensor for sensing the state of operation of at least one automotive part and an actuator for controlling the operation of the respective automotive part in accordance with the state sensed by the sensor, each of said electronic devices having a self-diagnosis function for detecting any fault in the respective sensor and actuator and for storing data concerning a detected fault,a fault diagnosis system for diagnosing the state of said electronic devices comprising a diagnostic tester including:
- an input circuit for receiving fault detection signals produced by the self-diagnosis function of each of a plurality of electronic devices, each operatively connected to a respective sensor and an actuator;
a display control circuit receiving the fault detection signals from said input circuit for converting the fault detection signals into display control signals;
display means for automatically displaying, in response to said display control signals, data identifying which of the sensors and actuators have faults; and
sound generating means receiving said display control signals for producing an aural alarm in response to the display control signals.
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Accused Products
Abstract
A fault diagnosis system for automotive electronic devices, suitable for use in an automobile having at least one electronic device which is provided with a sensor for sensing the state of operation of at least one automotive part and an actuator for controlling the operation of the automotive part in accordance with the state sensed by the sensor, the electronic device having a self-diagnosis function for detecting any fault in said sensor or said actuator and for storing data concerning the detected fault. The fault diagnosis system has a diagnosis tester which includes an input circuit for receiving a fault detection signal which is produced as a result of self-diagnosis performed by the self-diagnosis function of said electronic device, a display control circuit for converting the fault detection signal received by the input circuit into a display control signal, a display for displaying, in accordance with said display control signal, data representing the sensor or said actuator having the fault, and a sound generating device receiving the display control signal for generating an aural alarm in response to a fault.
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Citations
15 Claims
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1. In an automobile having a plurality of electronic devices, each of which is provided with a sensor for sensing the state of operation of at least one automotive part and an actuator for controlling the operation of the respective automotive part in accordance with the state sensed by the sensor, each of said electronic devices having a self-diagnosis function for detecting any fault in the respective sensor and actuator and for storing data concerning a detected fault,
a fault diagnosis system for diagnosing the state of said electronic devices comprising a diagnostic tester including: -
an input circuit for receiving fault detection signals produced by the self-diagnosis function of each of a plurality of electronic devices, each operatively connected to a respective sensor and an actuator; a display control circuit receiving the fault detection signals from said input circuit for converting the fault detection signals into display control signals; display means for automatically displaying, in response to said display control signals, data identifying which of the sensors and actuators have faults; and sound generating means receiving said display control signals for producing an aural alarm in response to the display control signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification