BS ISO 27145-2:2012
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Road vehicles. Implementation of World-Wide Harmonized On-Board Diagnostics (WWH-OBD) communication requirements – Common data dictionary
Published By | Publication Date | Number of Pages |
BSI | 2012 | 48 |
This part of ISO 27145 defines all regulatory data elements of the ISO 27145 series. The data elements are used to provide the external test equipment with the diagnostic status of the vehicle on-board diagnostics (VOBD) system in the vehicle. All data elements are communicated with the unified diagnostic services as defined in ISO 27145-3. The data elements are diagnostic trouble codes (DTCs), data identifiers (DIDs) and routine identifiers (RIDs). The mapping from parameter identifiers (PIDs), monitor identifiers (MIDs) and info type identifiers (ITIDs) is described in this part of ISO 27145.
If new legislated WWH-OBD GTR modules are established, it is intended that ISO 27145 be applicable with possible extensions, which can be included in this part of ISO 27145, can be specified as enhancements of the SAE Digital Annexes or can even be part of other referenced documents which are intended to include the applicable data definitions.
ISO 27145 is intended to become the single communication standard for access to OBD-related information (VOBD). To allow for a smooth migration from the existing communication standards to this future world-wide communication standard, the communication concept as specified in ISO 27145-4 is based on two different data links: ISO 15765-4 and ISO 13400 (all parts).
In view of the usage of standard network layer protocols, future extensions to optional physical layers (e.g. wireless) are possible.
NOTE It is expected to extend ISO 27145-4 as necessary upon introduction of additional communication media.
ISO 27145-4 is the entry point to establish communication with the vehicle. Based on the results of the initialization, the external test equipment determines which protocol and diagnostic services are supported by the vehicle’s emissions-related system, i.e.
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legislated OBD: ISO 15031 series, and
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legislated WWH-OBD: ISO 27145.
Vehicles according to ISO 27145 provide VOBD system support as envisioned for WWH-OBD by Global Technical Regulation (GTR) No. 5.
IMPORTANT — Use cases deriving from country-specific implementation of GTR No. 5 into local legislation are not included in this part of ISO 27145.
PDF Catalog
PDF Pages | PDF Title |
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3 | 7.2.2.4 ITID dataRecord[] with SAE J1979-DA InfoType ID data 7.2.3 RID routineStatusRecord[] definition 8 Diagnostic trouble code definition 8.1 Overview 8.2 SAE J2012-DA and SAE J1939-73 DTCs 8.2.1 SAE J2012-DA DTC format definition 8.2.2 SAE J1939 DTC format definition 8.2.2.1 Mapping definition 8.2.2.2 Mapping example 9 Presentation layer requirements |
11 | 1 Scope |
12 | 2 Normative references 3 Terms, definitions and abbreviated terms 3.1 Terms and definitions |
14 | 3.2 Abbreviated terms |
15 | 4 Conventions 5 Document overview |
17 | 6 Common data dictionary requirements 6.1 Data range layout 6.2 Diagnostic trouble code (DTC) range layout |
18 | 7 Data identifier and routine identifier data record requirements 7.1 Data identifier and routine identifier definitions 7.1.1 ISO 14229-1 and SAE J1979-DA DID/RID mapping 7.1.2 DID (PID, MID and ITID) and RID-supported definition 7.2 DID and RID data record definition 7.2.1 Supported data types 7.2.1.1 General |
19 | 7.2.1.2 ISO LATIN 1 ASCII character set 7.2.2 dataRecord[] structure definition 7.2.2.1 Overview |
20 | 7.2.2.2 PID dataRecord[] with SAE J1979-DA PID data |
21 | 7.2.2.3 MID dataRecord[] with SAE J1979-DA Monitor ID data |