Method for diagnosing error of vehicle electronic component

A method for diagnosing an error of a vehicle electronic component with a plurality of input/output ports comprising:

• (a) a process simultaneously collecting input and output waveforms of a problematic component in operation in real time in a state where the problematic component is electrically connected to a vehicle;
• (b) a process analyzing the output waveforms to obtain information on a point in time of generation of an unusual output waveform that causes an erroneous operation of the problematic component;
• (c) a process extracting input waveforms during a predetermined time before and after the point of time of generation of the unusual output waveform using the information on the point in time;
• and
• (d) a process correspondingly applying the input waveforms extracted in the (c) process to each of input ports of the problematic component, but also extracting an unusual input waveform that generates the unusual output waveform while sequentially releasing the application of the input waveforms one by one.

A method for diagnosing an error of a vehicle electronic component with a plurality of input/output ports comprising:

• (a) a process sharing unusual waveform data that cause an erroneous operation of a problematic component through a communication network, wherein the unusual waveform data are obtained at least through:
• (a-1) a process simultaneously collecting input and output waveforms of the problematic component in operation in real time in a state where the problematic component is electrically connected to a vehicle;
• (a-2) a process analyzing the output waveforms to obtain information on a point in time of generation of an unusual output waveform that causes the erroneous operation of the problematic component;
• (a-3) a process extracting input waveforms during a predetermined time before and after the point of time of generation of the unusual output waveform using the information on the point in time;
• and
• (a-4) a process correspondingly applying the input waveforms extracted in the (a-3) process to each of input ports of the problematic component, but also extracting an unusual input waveform that generates the unusual output waveform while sequentially releasing the application of the input waveforms one by one;
• and
• (b) a process obtaining the unusual waveform data and reproducing the unusual waveform data into original input waveforms to input the original input waveforms to corresponding input ports of a test component in operation, thereby testing an erroneous operation or not of the test component.

A method for diagnosing an error of a vehicle electronic component with a plurality of input/output ports comprising:

• (a) simultaneously collecting input and output waveforms of a problematic component in operation in real time in a state where the problematic component is electrically connected to a vehicle;
• (b) analyzing the output waveforms to obtain information on a point in time of generation of an unusual output waveform that causes an erroneous operation of the problematic component;
• (c) extracting input waveforms during a predetermined time before and after the point of time of generation of the unusual output waveform using the information on the point in time;
• and
• (d) applying the input waveforms extracted in the step (c) to each of input ports of the problematic component.