Which is the best description of an intermittent fault?
An intermittent fault, often called simply an intermittent, is a malfunction of a device or system that occurs at intervals, usually irregular, in a device or system that functions normally at other times. Intermittent faults are common to all branches of technology, including computer software.
Can a car dealer tell if there is an intermittent fault?
The first thing to get your head around is that garages know all about intermittent faults; they’re as irritating to the garage owners as the are to the driver. So although a dealer might not greet your news with alacrity, particularly if a car is under warranty, they’re not going to think you’re making it up.
Why is it difficult to identify a fault?
However, it may be that the removed system is inherently faulty but the test equipment is inadequate to identify the nature of the fault, this is usually because the fault was not perceived during the systems design, or the fault has not been experienced before so that the symptoms are not recognised; or the fault is he Authors.
What kind of fault is a permanent fault?
Introduction Systems faults are usually classified as permanent, transient or intermittent fault [1]. A system experiencing a permanent fault, also referred to as a ‘hard fault’ will exhibit a continuous deviation from its specified performance specifications.
When to look for an intermittent fault in a car?
An intermittent fault only presents itself from time to time, e.g as result of temperature fluctuations or mechanical loads. Measuring an intermittent fault can therefore be a long search for defective components or damaged wiring and connectors that have a bad connection.
What should be assumed about intermittent fault dynamics?
Intermittent fault dynamics What is assumed in this paper about intermittent faults is that they are a symptom or manifestation of the degradation of some physical property of a system component.
Where can I find information on intermittent electrical problems?
Another source that can often provide insight and answers for hard-to-diagnose faults like intermittents is the International Automotive Technicians Network (www.iatn.net). Thousands of technicians worldwide belong to this group and share their knowledge and experience in the form of posts and follow-ups.
How to do an intermittent fault measurement [ video ]?
The measuring time becomes 100/20 = 5 seconds. Set the trigger time out to infinite so the measurement is only performed when a trigger is given. Set the pre trigger for sufficient measuring time before and after the trigger. Select e.g. 50% to measure equally long before and after the trigger.