MACS Service Reports - 2015 - DEC1

©

Total Vehicle Climate and Thermal ManagementTM

December 2015

By Dave Hobbs, MACS Technical Correspondent
DYNAMIC DIAGNOSTICS
The way we approach diagnostics
in the automotive repair field differs
quite a bit from other industries. Unlike other technical areas of expertise
that come with quick assessments of
malfunctions involving everything
from copy machines to ballistic missiles, the auto repair business still
seems to rank number one in variables that require critical thinking
and self-initiated research. When an
avionics technician approaches an
electronic system with a problem on
an aircraft, the methodology of diagnostics is very much dictated by the
manufacturer of the system on that
aircraft. Flow charts are followed
and major components are replaced.
Compared to the state of diagnostic
practices utilized by many automotive technicians today, the avionics
technician's world appears cut and
dry. Likewise, the automotive repair
world seems to be quite lacking in
standards and consistency at times.
There are methods however that can
help greatly in making our jobs easier and they've been there for several
years now.

General Motors

Strategy Based Diagnostics
Strategy Based Diagnostics (SBD)
was developed in the late 1990's by
General Motors after a detailed survey of dealer technicians who had
consistent CSI (Customer Satisfaction Index) numbers coupled with
high productivity. GM asked each

Figure 1: GM's SBD chart lives on, well beyond any fad diagnostic method due to the proven
fact that it works!

MACS Service Reports is the official technical publication of the
Mobile Air Conditioning Society Worldwide, Inc., P.O. Box 88,
Lansdale, PA 19446. The material published in MACS Service
Reports expresses the views of the contributors and not necessarily that of MACS. Every attempt has been made to ensure

December 2015

the accuracy of the content of MACS Service Reports. MACS,
however, will not be responsible for the accuracy of the information published nor will MACS Worldwide be liable in any way for
injury, labor, parts or other expenses resulting from the use of
information appearing in MACS Service Reports.

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