BS ISO 15031-4:2014

Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions, symbols, and abbreviated terms
4 Conventions
5 Document overview
6 Required functions of the external test equipment
7 Communication protocols
8 Connections to the vehicle
9 Network access
10 User interface
11 Power requirements
12 Electromagnetic compatibility (EMC)
13 Conformance testing
Annex A (informative) - Recommended external test
         equipment common user interface displays
Annex B (normative) - Initialization and identification
         of ISO 14230-4/ISO 9141-2 protocols
Bibliography

Determines a set of standard diagnostic services to be provided by vehicles (OBD services).

This part of ISO15031 specifies a set of standard diagnostic services to be provided by vehicles (OBD services). This part of ISO15031 specifies a complementary set of facilities, to be provided by external test equipment, which will include scan tool facilities. These facilities provide complete, efficient, and safe access to all of the public OBD (on-board diagnosis) services on any vehicle, which is compliant with this part of ISO15031.

This part of ISO15031 specifies

• a means of establishing communications between an OBD-equipped vehicle and external test equipment, and

• a set of diagnostic services to be provided by the external test equipment in order to exercise the services defined in ISO15031-5.

This part of ISO15031 does not preclude the inclusion of additional capabilities or functions in external test equipment. However, it is the responsibility of the external test equipment designer to ensure that no such capability or function can adversely affect either an OBD-equipped vehicle, which may be connected to the external test equipment or the external test equipment itself.