ISO/PAS 27145-2:2006
(Main)Road vehicles — Implementation of WWH-OBD communication requirements — Part 2: Common emissions-related data dictionary
Road vehicles — Implementation of WWH-OBD communication requirements — Part 2: Common emissions-related data dictionary
ISO/PAS 27145-2:2006 defines all regulatory emissions-related data elements of ISO/PAS 27145. The data elements are used to provide the external test equipment with the diagnostic status of the emissions-related system in the vehicle. All data elements are communicated with the unified diagnostic services as defined in ISO/PAS 27145-3. Data elements are Diagnostic Trouble Codes (DTCs), Parameter Identifiers (PIDs), Monitor Identifiers (MIDs), Test Identifiers (TIDs)/Routine Identifiers (RIDs) and InfoType Identifiers (ITIDs).
Véhicules routiers — Mise en application des exigences de communication WWH-OBD — Partie 2: Dictionnaire de données liées aux émissions communes
General Information
Relations
Standards Content (Sample)
PUBLICLY ISO/PAS
AVAILABLE 27145-2
SPECIFICATION
First edition
2006-09-15
Road vehicles — Implementation of
WWH-OBD communication
requirements —
Part 2:
Common emissions-related data
dictionary
Véhicules routiers — Mise en application des exigences de
communication WWH-OBD —
Partie 2: Dictionnaire de données liées aux émissions communes
Reference number
ISO/PAS 27145-2:2006(E)
©
ISO 2006
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ISO/PAS 27145-2:2006(E)
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ii © ISO 2006 – All rights reserved
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ISO/PAS 27145-2:2006(E)
Contents Page
Foreword. v
Introduction . vi
1 Scope . 1
2 Normative references . 2
3 Terms and definitions. 4
4 Symbols and abbreviated terms . 6
5 Conventions . 8
6 Common data dictionary. 8
7 Data identifier and data record requirements. 10
7.1 Legacy data identifiers. 10
7.1.1 ISO 15031-5 and ISO 14229-1 legacy DID definition. 10
7.1.2 Legacy ISO 15031-5 identifier supported definition. 12
7.1.3 Legacy data record definition. 12
7.1.4 SAE J1939 legacy data identifier definition .16
7.2 Unified data identifiers . 18
7.2.1 Unified data identifier range layout. 18
7.2.2 Unified data identifier supported definition . 19
7.3 Unified data record definition. 21
7.3.1 Overview . 21
7.3.2 Remotely received sub-node information and validity. 22
7.3.3 SignalAttribute (SA) A1 and A2 definition. 24
7.3.4 Supported data types . 29
7.3.5 Unified PID data record structure . 31
7.3.6 Unified MID data record structure. 37
7.3.7 Unified InfoType ID data record structure. 37
7.3.8 Unified RID data record structure . 37
7.3.9 Unified CID data record structure . 37
7.4 Manufacturer data identifier . 37
7.4.1 Manufacturer data identifier range layout. 37
7.4.2 Manufacturer data parameter requirements . 38
8 Diagnostic Trouble Code definition. 38
8.1 Overview . 38
8.2 Legacy DTCs . 40
8.2.1 ISO 15031 legacy DTC to unified DTC mapping . 40
8.2.2 ISO 15031-6 legacy DTC encoding. 40
8.2.3 SAE J1939-73 legacy DTC to unified DTC mapping. 41
8.2.4 SAE J1939-73 legacy DTC number encoding . 43
8.3 Unified DTC . 43
8.3.1 Unified DTC range layout. 43
8.3.2 Unified DTC format . 44
8.3.3 Unified DTC encoding . 44
8.3.4 BaseDTC supported Unified PID data record structure. 44
8.4 Manufacturer DTC. 45
8.4.1 Manufacturer DTC range layout . 45
8.4.2 Manufacturer DTC based on unified DTC format . 45
8.4.3 Manufacturer DTC encoding. 46
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ISO/PAS 27145-2:2006(E)
Annex A (informative) Referenced document information source and content description. 47
Annex B (normative) Standard and DTC specific set of emissions-related legacy PIDs. 49
Bibliography . 50
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ISO/PAS 27145-2:2006(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
In other circumstances, particularly when there is an urgent market requirement for such documents, a
technical committee may decide to publish other types of normative document:
⎯ an ISO Publicly Available Specification (ISO/PAS) represents an agreement between technical experts in
an ISO working group and is accepted for publication if it is approved by more than 50 % of the members
of the parent committee casting a vote;
⎯ an ISO Technical Specification (ISO/TS) represents an agreement between the members of a technical
committee and is accepted for publication if it is approved by 2/3 of the members of the committee casting
a vote.
An ISO/PAS or ISO/TS is reviewed after three years in order to decide whether it will be confirmed for a
further three years, revised to become an International Standard, or withdrawn. If the ISO/PAS or ISO/TS is
confirmed, it is reviewed again after a further three years, at which time it must either be transformed into an
International Standard or be withdrawn.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO/PAS 27145-2 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 3,
Electrical and electronic equipment.
ISO/PAS 27145 consists of the following parts, under the general title Road vehicles — Implementation of
WWH-OBD communication requirements:
⎯ Part 1: General information and use case definition
⎯ Part 2: Common emissions-related data dictionary
⎯ Part 3: Common message dictionary
⎯ Part 4: Connection between vehicle and test equipment
NOTE ISO/PAS 27145-4 will be extended as necessary due to introduction of additional communication media.
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ISO/PAS 27145-2:2006(E)
Introduction
This document set includes the communication between the vehicle's OBD systems and test equipment
implemented across vehicles within the scope of the WWH-OBD GTR (World Wide Harmonized On-Board
Diagnostics Global Technical Regulations).
It has been established in order to apply the unified diagnostic services (specified in ISO 14229-1) to WWH
OBD systems.
To achieve this, it is based on the Open Systems Interconnection (OSI) Basic Reference Model in accordance
with ISO/IEC 7498-1 and ISO/IEC 10731, which structures communication systems into seven layers. When
mapped on this model, the services specified by ISO/PAS 27145 are broken into:
⎯ Application layer (layer 7), specified in ISO/PAS 27145-3;
⎯ Presentation layer (layer 6), specified in ISO/PAS 27145-2;
⎯ Session layer services (layer 5), specified in ISO/PAS 27145-4;
⎯ Transport layer services (layer 4), specified in ISO/PAS 27145-4;
⎯ Network layer services (layer 3), specified in ISO/PAS 27145-4;
⎯ Data link layer (layer 2), specified in ISO/PAS 27145-4; and
⎯ Physical layer (layer 1), specified in ISO/PAS 27145-4;
in accordance with Table 1.
Table 1 — Enhanced and legislated OBD diagnostic specifications applicable to the OSI layers
Implementation of WWH-OBD communication
Applicability OSI 7 layers
requirements, e.g. emissions-related UDS
Application (layer 7) ISO/PAS 27145-3 / ISO 14229-1
Presentation (layer 6) ISO/PAS 27145-2
Session (layer 5)
Seven layers
according to
Transport (layer 4)
ISO/IEC 7498-1 and
ISO/IEC 10731
ISO/PAS 27145-4
Network (layer 3)
Data link (layer 2)
Physical (layer 1)
vi © ISO 2006 – All rights reserved
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PUBLICLY AVAILABLE SPECIFICATION ISO/PAS 27145-2:2006(E)
Road vehicles — Implementation of WWH-OBD communication
requirements —
Part 2:
Common emissions-related data dictionary
1 Scope
ISO/PAS 27145 is intended to become the single communication standard for access to OBD-related
information. To allow for a smooth migration from the existing communication standards to this future
worldwide standardized communication standard, the initial communication concept will be based on CAN. In
a second step, ISO/PAS 27145 will be extended to define the world-wide harmonized OBD communication
standard based on existing industry communications standards (e.g. Internet Protocol) over Ethernet. Due to
the usage of standard network layer protocols, future extensions to optional physical layers (e.g. wireless) are
possible.
This part of ISO/PAS 27145 defines all regulatory emissions-related data elements of ISO/PAS 27145. A new
part may be added in the future upon availability of new legislated WWH-OBD GTR modules. The data
elements are used to provide the external test equipment with the diagnostic status of the emissions-related
system in the vehicle. All data elements are communicated with the unified diagnostic services as defined in
ISO/PAS 27145-3. Data elements are Diagnostic Trouble Codes (DTCs), Parameter Identifiers (PIDs),
Monitor Identifiers (MIDs), Test Identifiers (TIDs)/Routine Identifiers (RIDs) and InfoType Identifiers (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 and
encoded according the definitions in SAE J1939-71/-73 and ISO 15031-5/ISO 15031-6. Unified data elements
are scaled and encoded according to the definitions in ISO/PAS 27145-2. Manufacturer data elements are
recommended to be scaled and encoded according to the definitions of the unified data set. This will ease the
transfer of manufacturer defined data elements into the standardized (unified) data range.
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ISO/PAS 27145-2:2006(E)
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 7498-1, Information technology — Open Systems Interconnection — Basic Reference Model — Part 1:
The Basic Model
ISO/IEC 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 emissions-
related 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 — Implementation of WWH-OBD communication requirements — Part 1:
General information and use case definition
ISO/PAS 27145-3, Road vehicles — Implementation of WWH-OBD communication requirements — Part 3:
Common message dictionary
ISO/PAS 27145-4, Road vehicles — Implementation 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 link
layer
SAE J1939-71, Recommended Practice for a Serial Control and Communication Vehicle Network — Vehicle
application layer
SAE J1939-73, Recommended Practice for a Serial Control and Communication Vehicle Network —
Application layer — Diagnostics
OBD_E_LDATA, 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
2 © ISO 2006 – All rights reserved
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ISO/PAS 27145-2:2006(E)
Figure 1 — WWH-OBD external document reference concept illustrates a master document (ISO/PAS 27145-2)
and the reference to existing standards (legacy emissions data and DTCs) as well as the reference to new
documents which define the Unified Data Identifiers and Unified DTCs based on the requirements deriving
from the WWH-OBD GTR.
The ISO/PAS 27145-2 referenced documents are available via download through a so-called Registration
Office Web Site. See Clause 2 for referenced document file names.
Referenced documents
(Registration Office)
OBD emissions-related
legacy data and DTCs
definitions:
⎝ SAE J1939-71 A
⎝ SAE J1939-73
OBD emissions-related
legacy data definitions:
Master document
⎝ ISO 15031-5
B
⎝ ISO 14229-1
ISO 27145-2
WWH-OBD
Common Emissions
Data Dictionary
OBD emissions-related
legacy DTC definitions:
⎝ ISO 15031-6
C
⎝ ISO 14229-1
WWH-OBD
emissions-related
unified data and DTC
D
definitions:
⎝ ISO 27145-2
Key
A External document “SAE J1939-71 and SAE J1939-73” defines emissions-related SPNs, DTCs and PGNs.
B External document “OBD emissions-related legacy data definitions” defines emissions-related data based on
ISO 15031-5 and ISO 14229-1.
C External document “OBD emissions-related legacy diagnostic trouble code definitions” defines emissions-related
DTCs based on ISO 15031-5 and ISO 14229-1.
D External document “WWH-OBD emissions-related Unified Data definitions” defines WWH-OBD emissions-related
unified data identifiers and DTCs required by the WWH-OBD GTR.
Figure 1 — WWH-OBD external document reference concept
See Annex A for detailed document location and content description.
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ISO/PAS 27145-2:2006(E)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO/PAS 27145-1 and the following
apply.
3.1
Analogue Parameter
AP
signal e.g. PID which is sensed from an Analogue to Digital Converter
3.2
ContinueList
CL
continuation of data records within a UPID_DataRecord[]
3.3
Discrete Parameter
DP
signal ,e.g. status signal, included in a PID which represents at least two digital states, e.g. on/off
3.4
DataFlow
concatenation of DataRecords for one UPID_DataRecord
NOTE Values are ContinueList and EndOfList.
3.5
DataLength
DL
length of a data item
3.6
DataType
DT
identifies in the context of this specification either an “Analogue” or “Discrete” parameter included in the data
record
3.7
EndOfList
EOL
termination (last data record) of data records within a UPID_DataRecord[]
3.8
Legacy Diagnostic Trouble Code
LDTC
Diagnostic Trouble Code which is already defined in a published standard, e.g. ISO 15031-6
3.9
Legacy Monitor Identifier
LMID
OBD Monitor Identifier which is already defined in a published standard, e.g. ISO 15031-5
3.10
Legacy Monitor Test Identifier
LMTID
OBD Monitor Test Identifier which is already defined in a published standard, e.g. ISO 15031-5
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ISO/PAS 27145-2:2006(E)
3.11
Legacy Routine Identifier
LRID
Routine Identifier which is already defined in a published standard, e.g. ISO 15031-5
3.12
Legacy InfoType Identifier
LITID
InfoType Identifier which is already defined in a published standard, e.g. ISO 15031-5
3.13
Malfunction Indicator
MI
indicator which clearly informs the driver of the vehicle in the event of a malfunction
NOTE Additional detail is included in the WWH-OBD GTR.
3.14
Parameter Group Number
PGN
group of SPNs
3.15
SignalAttribute
SA
DataType, DataFlow, DataLength and Validity of the data parameters included in the data record referenced
by the Unified Data Identifier of the transmitted data from the vehicle's server(s)
3.16
Suspect Parameter Number
SPN
used to identify a least repairable subsystem that has failed, to identify subsystems and or assemblies that
may not have hard failures but may be exhibiting abnormal system operating performance, to identify a
particular event or condition that will be reported and to report a component and non-standard failure mode
3.17
Supported Unified Data Identifiers
SUDID
data identifier specified in a reserved range to be used to reference a list of Unified Data Identifiers and
additional Supported Unified Data Identifiers to be supported by the server
3.18
Unified Control Identifier
UCID
references a control function, e.g. Input/Output in the server
NOTE The value of the control identifier is “Unified”, which is defined as a unique number standardized for the
specific control function.
3.19
Unified Diagnostic Trouble Code
UDTC
value which references a specific fault in a system implemented in the server
NOTE The value of the diagnostic trouble code is “Unified”, which is defined as a unique number standardized for the
specific fault.
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ISO/PAS 27145-2:2006(E)
3.20
Unified InfoType Identifier
UITID
references identification information, e.g. Calibration Identifier in the server
NOTE The value of the InfoType identifier is “Unified”, which is defined as a unique number standardized for the
specific identification information.
3.21
Unified Monitor Identifier
UMID
references an OBD Monitor function, e.g. Misfire Monitor in the server
NOTE The value of the OBD Monitor identifier is “Unified”, which is defined as a unique number standardized for the
specific OBD Monitor function.
3.22
Unified Parameter Identifier
UPID
references a control function, e.g. Input/Output in the server
NOTE The value of the control identifier is “Unified”, which is defined as a unique number standardized for the
specific control function.
3.23
Unified Routine Identifier
URID
references a routine function, e.g. Evaporation Monitor routine in the server
NOTE The value of the routine identifier is “Unified”, which is defined as a unique number standardized for the
specific control function.
3.24
Uniform Resource Locator
URL
Uniform Resource Identifier which, in addition to identifying a resource, provides a means of locating the
resource by describing its primary access mechanism (e.g. its network location)
3.25
Validity
V
indicates the validity of the data signals included in the data record referenced by a Parameter Identifier when
reported by the server
4 Symbols and abbreviated terms
AP Analogue Parameter
CALID Calibration Identification
CGW Central Gateway
CL ContinueList
CVN Calibration Verification Number
DF Data Format
DID Data Identifier
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ISO/PAS 27145-2:2006(E)
DL Data Length
DP Discrete Parameter
DT DataType
DTC Diagnostic Trouble Code
ECM Engine Control Module
ECU Electronic Control Unit
EOL EndOfList
GTR Global Technical Regulation
ITID InfoType Identifier
LDTC Legacy Diagnostic Trouble Code
LMID Legacy Monitor Identifier
LITID Legacy InfoType Identifier
LMTID Legacy Monitor Test Identifier
LPID Legacy Parameter Identifier
LRID Legacy Routine Identifier
MI Malfunction Indicator
MID Monitor Identifier
MTID Monitor Test Identifier
N/A Not Applicable
PID Parameter Identifier
PGN Parameter Group Number
RID Routine Identifier
SA Signal Attribute
SPN Suspect Parameter Number
SUDID Supported Unified Data Identifiers
UCID Unified Control (input/output) Identifier
UDTC Unified Diagnostic Trouble Code
UITID Unified InfoType Identifier
UMID Unified Monitor Identifier
UPID Unified Parameter Identifier
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ISO/PAS 27145-2:2006(E)
URID Unified Routine Identifier
URL Uniform Resource Locator
V Validity
VA Validity Attribute
VIN Vehicle Identification Number
VOBD Vehicle On-Board Diagnostics
WWH-OBD Word Wide Harmonized On-Board Diagnostics
5 Conventions
ISO/PAS 27145 is based on the conventions discussed in the O.S.I. Service Conventions (ISO/IEC 10731:1994)
as they apply for diagnostic services.
6 Common data dictionary
This part of the standard specifies a data range layout which considers three (3) data sets in the overall life
cycle of an automotive vehicle and its electronic systems.
These data sets are:
a) A “legacy” data set which includes all standardised data and DTCs used in electronic systems required to
be compliant to legislation prior to the applicability of GTR modules. Legacy data is not defined in this
standard (see Figure 2 — Overview of BaseDTC and DID ranges Page 0 and 1).
b) A “unified” data set which includes all standardised data and DTCs used in electronic systems required to
be compliant to an applicable GTR module. Unified data is defined in this standard (see Figure 2 —
Overview of BaseDTC and DID ranges Page 2).
c) A “manufacturer” data set which reserves a certain range for all vehicle and system supplier defined data
and DTCs used in electronic systems to meet the manufacturer's system life cycle requirements.
Manufacturer data is not defined in this standard but is recommended to be scaled as unified data (see
Figure 2 — Overview of BaseDTC and DID ranges Page 10).
Figure 2 — Overview of BaseDTC and DID ranges provides the layout of available data ranges.
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ISO/PAS 27145-2:2006(E)
Page 15 - 11 Page 10 Page 9 - 3 Page 1
Page 2 Page 0
0xFFFFFF – 0xBFFFFF 0xAFFFFF 0x9FFFFF – 0x3FFFFF 0x1FFFFF 0x0FFFFF
0x2FFFFF
ISO 27145
reserved data
range
0x0C0000
Manufacturer
0x0BFFFF
ISO 27145 ISO 27145 ISO 27145
Unified SAE J1939
defined
reserved data
reserved reserved DIDs
PGNs – 3
DIDs
data range data range range
(bits 23 . 0) Reserved for
(bits 23 . 0)
ISO 15765-3
0x0B0000
0x0AFFFF
SAE J1939
PGNs - 2
0x0A0000
0x09FFFF
SAE J1939
PGNs - 1
0x18FFFF
0x090000
0x08FFFF
ISO 15031
SAE J1939
ISO 14229-1
PGNs - 0
0xF80000 – 0xB80000 0xA80000 0x980000 – 0x380000 0x280000 Legacy DIDs
0x080000
0x180000
Manufacturer SAE J1939
ISO 27145 ISO 27145 Unified ISO 27145
Legacy
defined
reserved reserved
BaseDTC reserved data
BaseDTC (native)
data range data range (bits 31 . 8) range
SPNs
(bits 31 . 8)
0x10FFFF
ISO 15031
ISO 14229-1
Legacy DTCs
0xF00000 – 0xB00000 0xA00000 0x900000 – 0x300000 0x200000 0x100000 0x000000
Figure 2 — Overview of BaseDTC and DID ranges
The data range layout is based on a Unified Data and Component (DTC) Identifier concept which uses the
identical page select encoding and differentiation between “BaseDTC” and “DataID” category.
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ISO/PAS 27145-2:2006(E)
Table 2 provides an overview about the available data ranges.
Table 2 — Overview of BaseDTC and DID ranges
Data range Data page Page size Description
0x000000 – 0x07FFFF 0.0 - 0.7 8 x 64 K Legacy SPNs as defined in SAE J1939
0x080000 – 0x08FFFF 0.8 - 0.8 1 x 64 K Legacy PGNs page '0' as defined in SAE J1939
0x090000 – 0x09FFFF 0.9 - 0.9 1 x 64 K Legacy PGNs page '1
...
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