DD ISO PAS 27145-2:2006 pdf download Road vehicles — Implementation of WWH-OBD communication requirements — Part 2: Common emissions-related data dictionary
Scope
SO/PAS 27145 is intended to become the single communication standard for access to OBD-relatedinformation. To allow for a smooth migration from the existing communication standards to this futureworldwide standardized communication standard, the initial communication concept will be based on CAN.lna second step, ISO/PAS 27145 will be extended to define the world-wide harmonized OBD communicationstandard based on existing industry communications standards (e.g. lnternet Protocol) over Ethernet. Due tothe usage of standard network layer protocols, future extensions to optional physical layers (e.g. wireless) arepossible.
This part of ISO/PAS 27145 defines all regulatory emissions-related data elements of SO/PAS 27145. A newpart may be added in the future upon availability of new legislated WWH-OBD GTR modules. The dataelements are used to provide the external test equipment with the diagnostic status of the emissions-relatedsystem in the vehicle. All data elements are communicated with the unified diagnostic services as defined inSO/PAS 27145-3. Dta elements are Diagnostic Trouble Codes (DTCs), Parameter ldentifiers (PIDs),Monitor ldentifiers (MIDs), Test ldentifiers (TIDs)/Routine ldentifiers (RIDs) and lnfoType ldentifiers (ITIDs).
This part of ISO/PAS 27145 defines three (3) different sets of data elements:
a) A legacy (backward compatible) data set as defined in SAE J1939-71/-73 and ISO 15031-5/ISO 15031-6;
b) A unified data set (new data definition according to ISO/PAS 27145-2); and
c) A manufacturer data set (defined by manufacturer).
Each set of data elements uses its own scaling and encoding scheme. Legacy data elements are scaled andencoded according the definitions in SAE J1939-71/-73 and ISO 15031-5/1SO 15031-6. Unified data elementsare scaled and encoded according to the definitions in ISO/PAS 27145-2. Manufacturer data elements arerecommended to be scaled and encoded according to the definitions of the unified data set. This will ease theransfer of manufacturer defined data elements into the standardized (unified) data range.
Normative references
The following referenced documents are indispensable for the application of this document. For datedreferences,only the edition cited applies. For undated references, the latest edition of the referenceddocument (including any amendments) applies.
SO 7498-1, Information technology — Open Systems Interconnection – Basic Reference Model- Part 1:The Basic Model
SOIEC 10731,Information technology – Open Systems Interconnection – Basic Reference Model-Conventions for the definition of OSI services
ISO 14229-1, Road vehicles – Unified diagnostic services (UDS) – Part 1: Specification and requirements
ISO/TS 15031-2,Road vehicles – Communication between vehicle and external equipment for emissions-related diagnostics – Part 2: Terms, definitions, abbreviations and acronyms
ISO 15031-5, Road vehicles – Communication between vehicle and external test equipment for emissionsrelated diagnostics – Part 5: Emissions-related diagnostic services
ISO 15031-6, Road vehicles – Communication between vehicle and external test equipment for emissions.related diagnostics — Part 6: Diagnostic trouble code definitions
ISO/PAS 27145-1, Road vehicles – lmplementation of WWH-OBD communication requirements 一 Part 1.General information and use case definition
SO/PAS 27145-3,Road vehicles – lmplementation of WWH-OBD communication requirements – Part 3:Common message dictionary
SO/PAS 27145-4,Road vehicles – lmplementation of WWH-OBD communication requirements – Part 4:Connection between vehicle and test equipment
SAE J1939-21, Recommended Practice for a Serial Control and Communication Vehicle Network — Data linklayer
SAE J1939-71, Recommended Practice for a Serial Control and Communication Vehicle Network — Vehicleapplication layer
SAE J1939-73,Recommended Practice for Serial Control and Communication Vehicle Network -Application layer-Diagnostics
OBD ELDATA, OBD emissions-related data definitions
OBD E LDTC， OBD emissions-related diagnostic trouble code definitions
WWH-OBD E UDATA UDTC, WWH-OBD emissions-related unified data and DTC definitions