Civil Engineering Reference
In-Depth Information
light-duty vehicles (LDV)) and directives for EURO IV, V, VI (heavy-duty ve-
hicles (HDVs)). The technical equivalent standard of ISO 15031-5 is SAE 1979
E/E diagnostic test modes, which is referenced by the California Air Resources
Board (ARB) and Environmental Protection Agency (EPA) for the federal states.
• Legislated WWH-OBD is defined in ISO 27145 Road vehicles—Implementa-
tion of emission-related WWH-OBD communication requirements. This upcom-
ing standard is still under development (2010) and will long term replace the
ISO 15031-5/SAE J1979 standards. The legislators in Europe and the USA have
also approved several parts of SAE J1939 Recommended Practice for a Serial
Control and Communications Vehicle Network:
- SAE 1939-73, Application Layer—Diagnostics (includes DM—diagnostic
modes and data items: parameter group numbers (PGNs) and suspect param-
eter numbers (SPNs).
- SAE 1939-71, Vehicle Application Layer (includes normal in-vehicle com-
munication messages and data items: SPNs).
The presentation layer (OSI 6) services for the:
• Vehicle manufacturer-enhanced diagnostics are:
- either specific to the manufacturer or
- the manufacturer defines the diagnostic data according to ISO 22901, Road
vehicles—Open Diagnostic data eXchange (ODX).
• Legislated OBD are defined in:
- ISO 15031-2, Road vehicles—Communication between vehicle and exter-
nal equipment for emission-related diagnostics—Part 2: Guidance on terms,
definitions, abbreviations and acronyms with reference to the Digital Annex
of SAE°J1930-DA, electrical/electronic systems diagnostic terms, defini-
tions, abbreviations and acronyms (includes all standardized terms and
abbreviations).
- ISO 15031-5, Road vehicles—Communication between vehicle and external
equipment for emission-related diagnostics—Part 5: Emission-related diag-
nostic services with reference to the Digital Annex of SAE°J1979-DA E/E
diagnostic test modes (includes all standardized data items: parameter identi-
fiers (PIDs), test identifiers (TIDs), monitor identifiers (MIDs) and infoType
identifiers (ITIDs).
- ISO 15031-6, Road vehicles—Communication between vehicle and exter-
nal equipment for emission-related diagnostics—Part 6: with reference to the
Digital Annex of SAE°J2012-DA, diagnostic trouble codes (includes all stan-
dardized DTCs).
• Legislated WWH-OBD are defined in:
- ISO 27145-2 Road vehicles—Implementation of WWH-OBD communication
requirements—Part 2: Common data dictionary (CDD). This standard refer-
ences the same SAE Digital Annexes as ISO 15031 (emission-related OBD):
○
SAE°J1930-DA, electrical/electronic systems diagnostic terms, defini-
tions, abbreviations and acronyms (includes all standardized terms and
abbreviations).
