Description / Abstract:
This SAE Recommended Practice is applicable to all E/E systems
on MD and HD vehicles. The terms defined are largely focused on
compression-ignited and spark-ignited engines. Specific
applications of this document include diagnostic, service and
repair manuals, bulletins and updates, training manuals, repair
data bases, under-hood emission labels, and emission certification
applications.
This document focuses on diagnostic terms, definitions,
abbreviations, and acronyms applicable to E/E systems. It also
covers mechanical systems which require definition.
Nothing in this document should be construed as prohibiting the
introduction of a term, abbreviation, or acronym not covered by
this document. The use and appropriate updating of this document is
strongly encouraged.
Certain terms have already been in common use and are readily
understood by manufacturers and technicians, but do not follow the
methodology of this document. To preserve this understanding, these
terms were included and have been identified with the footnote (2),
"previous usage," so they will not erroneously serve as a precedent
in the construction of new names. These terms fall into three
categories:
a. Acronyms that do not logically fit the term.
b. Acronyms existing at the component level, i.e., their terms
contain the base word or noun that describes the generic item that
is being further defined.
c. Acronyms for terms that appear to contain the base word, but
are frequently used as a modifier to another base word. (This use
may possibly be thought of as following the methodology since the
acronym is normally used as a modifier.)