For example, theįunctional features of the basic diagnostic instrument are specified in the SAE Included in the SAE (Recommended Practice) and ISO guidelines. A year later also included vehicles with diesel engines.Īlso in Europe, the EOBD system (European On Board Diagnostic) was introduced (following the model as in US), which became mandatory after 2000 for gasoline engines, and for diesel engines after 2003.Īlong with the implementation of the OBD-2 system, there was also a revolution in the field of standardization requirements in car diagnostics, including:įor structural parts and systems have been unified, OBD2 on the US market has become mandatory for all vehicles with gasoline engines since 1996. To determine the fault it became necessary to observe the shape of the tested signal. Over the years, such tools have proved to be insufficient. The basic tools in the workshops were primarily devices for measuring electrical quantities such as voltmeter, ammeter, ohmmeter or oscilloscope. Mechanics were checking first the electrical parameters of the components and then, after locating the fault they were doing the mechanical part of the repair.
A big development in this field took place in the 1960s, when mechanical elements were increasingly replaced with electrical ones. It existed already at the time of the first car workshops, i.e. If there is a discrepancy – it is possible to identify the defect.įirstly, vehicle diagnostics is not a modern invention. The diagnostician’s main task is to measure the values of various parameters and compare them with the values provided by the manufacturers.
An additional property is that the condition assessment is carried out only with partial dismantling – (without affecting the functioning of the elements) and more often -completely without dismantling the vehicle. from the beginning – a small outline of the OBD2 system history.ĭiagnostics is a process during which the technical condition of the vehicle is determined using appropriate control and measuring equipment. Sometimes, we receive questions such as: what is the difference between these the two type? I have free OBD2 module, why I have access only to engine diagnostics? In this post, we will try to explain it.
As you know, MaxiEcu provides service diagnostics + OBD2 diagnostics.
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