ABSTRACT
Logic diagnostics or faultfinding is a fundamental part of an automotive technician’s work. The practice of RCA is based, quite rightly, on the belief that problems are best solved by attempting to address, correct or eliminate the root causes, as opposed to just addressing the faults causing observable symptoms. Dealing with root causes ensures that problems will not reoccur. RCA is best considered to be an iterative process because complete prevention of recurrence by one corrective action is not always realistic. Most digital oscilloscopes have flight record facilities. This means that they will save the signal from any probe connection in memory for later play back. The time duration will vary depending on the available memory and the sample speed, but this is a very useful feature. A breakout box is a simple piece of electrical test equipment used to support diagnostics by providing easy access to test signals.
