ISO 15118-21:2025

Road vehicles — Vehicle to grid communication interface — Part 21: Common 2nd generation network layer and application layer requirements conformance test plan

This document specifies conformance tests in the form of an abstract test suite (ATS) for a system under test (SUT) that implements an electric-vehicle communication controller (EVCC) or a supply-equipment communication controller (SECC) for all common requirements specified in ISO 15118-20 that are independent of a particular charging type (AC, DC, ACD, WPT charging). These conformance tests specify the testing of capabilities and behaviours of an SUT, as well as checking what is observed against the conformance requirements specified in ISO 15118-20 and against what the implementer states the SUT implementation's capabilities are. The capability tests within the ATS check that the observable capabilities of the SUT are in accordance with the static conformance requirements specified in ISO 15118-20. The behaviour tests of the ATS examine an implementation as thoroughly as practical over the full range of dynamic conformance requirements specified in ISO 15118-20 and within the capabilities of the SUT. A test architecture is described in correspondence to the ATS. The abstract test cases in this document are described leveraging this test architecture and are specified in descriptive tabular format covering the ISO/OSI layer 3 to 7 (network to application layers). In terms of coverage, this document only covers normative sections and requirements in ISO 15118-20. This document additionally refers to specific tests for requirements on referenced standards (e.g. IETF RFCs, W3C Recommendation, etc.) if they are relevant in terms of conformance for implementations according to ISO 15118-20. However, it is explicitly not intended to widen the scope of this conformance specification to such external standards, if it is not technically necessary for the purpose of conformance testing for ISO 15118-20. Furthermore, the conformance tests specified in this document do not include the assessment of performance nor robustness or reliability of an implementation. They cannot provide judgments on the physical realization of abstract service primitives, how a system is implemented, how it provides any requested service, or the environment of the protocol implementation. Furthermore, the abstract test cases specified in this document only consider the communication protocol and the system's behaviour specified in ISO 15118-20. Power flow between the EVSE and the EV is no prerequisite for the test cases specified in this document.

Véhicules routiers — Interface de communication entre véhicule et réseau électrique — Partie 21: Plan de test de conformité aux exigences communes de la couche réseau et de la couche application de 2ème génération

General Information

• Status: Published
• Publication Date: 18-Sep-2025
• ICS: 43.120 - Electric road vehicles
• Technical Committee: ISO/TC 22/SC 31 - Data communication
• Drafting Committee: ISO/TC 22/SC 31 - Data communication
• Current Stage: 6060 - International Standard published
• Start Date: 19-Sep-2025
• Due Date: 19-Jan-2025
• Completion Date: 19-Sep-2025

Standards Content (Sample)

International
Standard
ISO 15118-21
First edition
Road vehicles — Vehicle to grid
2025-09
communication interface —
Part 21:
Common 2nd generation network
layer and application layer
requirements conformance test plan
Véhicules routiers — Interface de communication entre véhicule
et réseau électrique —
Partie 21: Plan de test de conformité aux exigences communes de
la couche réseau et de la couche application de 2ème génération
Reference number
© ISO 2025
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Published in Switzerland
ii
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Abbreviated terms . 6
5 Conventions . 7
5.1 Requirement structure .7
5.2 Test system (TS) description .8
6 Test architecture reference model . 8
6.1 General information.8
6.2 Platform adapter .8
6.3 SUT adapters .9
6.3.1 General information .9
6.3.2 IEC 61851-1 SUT adapter .9
6.3.3 ISO 15118-20 SUT adapter .10
6.3.4 ISO 15118-3 SUT adapter .11
6.3.5 ISO 15118-8 SUT adapter .11
6.4 Codecs . .11
6.5 Test system (TS) timer handling . 12
6.5.1 Definition of test system (TS) timers and timeouts . 12
6.5.2 Test system timer scenarios for SUT SECC . 13
6.5.3 Test system timer scenarios for SUT EVCC .14
7 Test suite conventions. 17
7.1 General information.17
7.2 Test suite structure (TSS) .17
7.3 Test profiles .18
7.3.1 General information .18
7.3.2 Test configurations .19
7.3.3 Protocol implementation conformance statement (PICS) definition .19
7.3.4 Protocol implementation extra information for testing (PIXIT) definition . 22
7.3.5 Test control .24
7.3.6 TS template messages .24
7.4 Test suite identifiers .24
7.4.1 General information .24
7.4.2 Test case identifiers .24
7.4.3 PICS/PIXIT identifiers . 25
7.4.4 Verdict types . 25
7.5 Test case specification . 26
8 Test case specification for common ISO 15118-20 requirements .27
8.1 General information.27
8.2 Test cases for SUT SECC .27
8.2.1 SECC SDP test case specifications .27
8.2.2 SECC V2GTP test case specifications . 30
8.2.3 SECC common V2G message flow test case specifications . 46
8.3 Test cases for SUT EVCC . 150
8.3.1 EVCC SDP test case specifications . 150
8.3.2 EVCC V2GTP test case specifications . 151
8.3.3 EVCC common V2G message flow test case specifications . 165
Annex A (informative) Test suite coverage .262
Annex B (normative) TS template messages for SUT type EVCC . 299

iii
Annex C (normative) Test system template messages for SUT type SECC .307
Annex D (normative) Test system functions for dynamic data elements in template messages.315
Bibliography .321

iv
Foreword
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In the IEC, see www.iec.ch/understanding-standards.
This document was prepared jointly by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC
31, Data communication, and Technical Committee IEC/TC 69, Electrical power/energy transfer systems
for electrically propelled road vehicles and industrial trucks, and with the European Committee for
Standardization (CEN) Technical Committee CEN/TC 301, Road vehicles, in accordance with the Agreement
on technical cooperation between ISO and CEN (Vienna Agreement).
A list of all parts in the ISO 15118 series series can be found on the ISO and IEC websites.
Any feedback or questions on this document should be directed to the user’s national standards
body. A complete listing of these bodies can be found at www.iso.org/members.html and
www.iec.ch/national-committees.

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ISO 15118-21
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