ISO 26021-3:2009

Road vehicles — End-of-life activation of on-board pyrotechnic devices — Part 3: Tool requirements

ISO 26021-3:2009 specifies the technical requirements to realize tool requirements for end-of-life activation of on-board pyrotechnic devices. It defines a test tool for ISO 26021 disposal functionality as well as the requirement for the final pyrotechnical device deployment tool (PDT). The focus is the definition of the human interface and the interfaces to the vehicle. It also defines general requirements for tests to validate the disposal functionality of the pyrotechnic control unit (PCU). It specifies two tool use-cases. Tool use-case 1 – deployment test tool (DTT): a development tool used to test and validate the PCU; the target users of this tool are the engineers of the PCU suppliers and the original equipment manufacturers (OEMs); the use case defines the human interface, the interfaces to the vehicle (CAN & ACL) and concrete test sequences. Tool use-case 2 – pyrotechnic device deployment tool (PDT): the final tool that is used to dispose pyrotechnical devices in vehicles; the target users of this tool are dismantlers; the use case defines the human interface, the interfaces to the vehicle (CAN & ACL), the environmental conditions and the deployment sequences.

Véhicules routiers — Activation de fin de vie des dispositifs pyrotechniques embarqués — Partie 3: Exigences de l'outil

General Information

• Status: Withdrawn
• Publication Date: 07-May-2009
• ICS: 43.040.80 - Crash protection and restraint systems
• Technical Committee: ISO/TC 22/SC 31 - Data communication
• Drafting Committee: ISO/TC 22/SC 31/WG 4 - Network applications
• Current Stage: 9599 - Withdrawal of International Standard
• Completion Date: 03-May-2022

Relations

• Revised: ISO 26021-3:2022 - Road vehicles — End-of-life activation of in-vehicle pyrotechnic devices — Part 3: Data definitions
• Effective Date: 01-May-2021

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 26021-3
First edition
2009-05-15

Road vehicles — End-of-life activation of
on-board pyrotechnic devices —
Part 3:
Tool requirements
Véhicules routiers — Activation de fin de vie des dispositifs
pyrotechniques embarqués —
Partie 3: Exigences de l'outil




Reference number
ISO 26021-3:2009(E)
©
ISO 2009

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ISO 26021-3:2009(E)
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ISO 26021-3:2009(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions. 2
4 Symbols and abbreviated terms . 3
5 Conventions . 3
6 General requirements and assumptions.4
7 Description of tool use case 1 – deployment test tool (DTT). 4
7.1 General. 4
7.2 Hardware requirements for deployment test tool (DTT). 5
7.3 General requirements for tests performed with deployment test tool (DTT) . 7
8 Description of tool use case 2 – pyrotechnic device deployment tool (PDT) . 9
8.1 User interface example of a PDT. 9
8.2 Basic design requirements for the PDT .10
8.3 Example sequence for deployment method version 1 . 11
Bibliography . 13

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ISO 26021-3:2009(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.
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 26021-3 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 3,
Electrical and electronic equipment.
ISO 26021 consists of the following parts, under the general title Road vehicles — End-of-life activation of
on-board pyrotechnic devices:
⎯ Part 1: General information and use case definitions
⎯ Part 2: Communication requirements
⎯ Part 3: Tool requirements
⎯ Part 4: Additional communication line with bidirectional communication
⎯ Part 5: Additional communication line with pulse width modulated signal
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ISO 26021-3:2009(E)
Introduction
Worldwide, nearly all new vehicles are equipped with one or more safety systems. This can include advanced
protection systems based on pyrotechnic actuators. All components which contain pyrotechnic substances
can be handled in the same way.
Recycling these vehicles demands a new process to ensure that the deactivation of airbags is safe and
cost-efficient. Due to the harmonization of the on-board diagnostic (OBD) interface, there is a possibility of
using it for on-board deployment, which is based on the same tools and processes.
Representatives of the global automobile industry agreed that automobile manufacturers
⎯ do not support reuse as an appropriate treatment method for pyrotechnic devices,
⎯ believe treatment of pyrotechnic devices is required before shredding, and
⎯ support in-vehicle deployment as the preferred method.
Based on this agreement, the four big associations of automobile manufacturers (ACEA, Alliance, JAMA and
KAMA) started to develop a method for the “in-vehicle deployment of pyrotechnic components in cars with the
pyrotechnic device deployment tool (PDT)”. The objective is that in the future a dismantler will use only one
tool without any accessories to deploy all pyrotechnic devices inside an end-of-life vehicle (ELV) by using an
existing interface to the car.
It is necessary to test and to validate the development of the disposal functionality inside the pyrotechnical
control unit (PCU).

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INTERNATIONAL STANDARD ISO 26021-3:2009(E)

Road vehicles — End-of-life activation of on-board pyrotechnic
devices —
Part 3:
Tool requirements
1 Scope
This part of ISO 26021 specifies the technical requirements to realize tool requirements for end-of-life
activation of on-board pyrotechnic devices. It defines a test tool for ISO 26021 disposal functionality as well as
the requirement for the final pyrotechnical device deployment tool (PDT). The focus is the definition of the
human interface and the interfaces to the vehicle. It also defines general requirements for tests to validate the
disposal functionality of the PCU. It specifies two tool use cases.
⎯ Tool use case 1 – deployment test tool (DTT):
⎯ a development tool used to test and validate the PCU;
⎯ the target users of this tool are the engineers of the PCU suppliers and the OEMs;
⎯ the use case defines the human interface, the interfaces to the vehicle (CAN & ACL) and concrete
test sequences.
⎯ Tool use case 2 – pyrotechnic device deployment tool (PDT):
⎯ the final tool that is used to dispose of pyrotechnical devices in vehicles;
⎯ the target users of this tool are dismantlers;
⎯ the use case defines the human interface, the interfaces to the vehicle (CAN & ACL), the
environmental conditions and the deployment sequences.
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 14229-1, Road vehicles — Unified diagnostic services (UDS) — Part 1: Specification and requirements
ISO 15031-3, Road vehicles — Communication between vehicle and external equipment for emissions-related
diagnostics — Part 3: Diagnostic connector and related electrical circuits, specification and use
ISO 15031-4, Road vehicles — Communication between vehicle and external equipment for emissions-related
diagnostics — Part 4: External test equipment
ISO 26021-1, Road vehicles — End-of-life activation of on-board pyrotechnic devices — Part 1: General
information and use case definitions
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ISO 26021-3:2009(E)
ISO 26021-2:2008, Road vehicles — End-of-life activation of on-board pyrotechnic devices — Part 2:
Communication requirements
ISO 26021-4:2008, Road vehicles — End-of-life activation of on-board pyrotechnic devices — Part 4:
Additional communication line with bidirectional communication
ISO 26021-5:2008, Road vehicles — End-of-life activation of on-board pyrotechnic devices — Part 5:
Additional communication line with pulse width modulated signal
3 Terms and definitions
For the purposes of this document, the definitions given in ISO 14229-1 and the following apply.
3.1
key
data value sent from the external test equipment to the on-board controller in response to the seed for gaining
access to the locked services
3.2
pyrotechnic device deployment tool
tool to be plugged into the diagnostic connector in order to communicate via the in-vehicle network with all
control units which are able to activate pyrotechnic devices, implementing the communication sequence as
defined in ISO 26021-1, ISO 26021-2, ISO 26021-4 and ISO 26021-5, to trigger the PCUs to perform the
required deployment sequence
3.3
pyrotechnic control unit
electronic control unit on the vehicle network, which controls the activation of pyrotechnic devices
3.4
safing unit
part of the PCU, for example an electromechanical switch or separate processor, that allows the deployment
microprocessor (µP) to deploy the pyrotechnic devices via the driver stage
3.5
safing
mechanism of which the primary purpose is to prevent an unintended functioning of the PCU processor prior
to detection of a crash situation
3.6
ScrappingProgramModule
program module responsible for firing the selected pyrotechnic device loops one by one
3.7
ScrappingProgramModuleLoader
program module loader responsible for converting the scrapping program module to an executable format
3.8
seed
data value sent from the on-board controller to the external test equipment, which is processed by the security
algorithm, to produce the key

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ISO 26021-3:2009(E)
4 Symbols and abbreviated terms
ACL additional communication line
AB airbag
CAN controller area network
DTT deployment test tool
DTT-LB deployment test tool load box
ELV end-of-life vehicle
GND ground
ID identification
1)
IDIS international dismantling information system
I/O input/output
LSB least significant bit
MSB most significant bit
OBD on-board diagnostic
OEM original equipment manufacturer
PC personal computer
PCU pyrotechnic control unit
PDT pyrotechnic device deployment tool
PWM pulse width modulated
RAM random access memory
SRS supplementary restraint system
TTL transistor–transistor logic
µP microprocessor
U battery voltage
BATT
5 Conventions
ISO 26021 is based on the conventions discussed in the OSI. Service Conventions (ISO/IEC 10731:1994) as
they apply for diagnostic services.

1) To create IDIS, most of the OEMs worldwide provide all legally necessary information to the dismantlers (for further
information, see Reference [5]).
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ISO 26021-3:2009(E)
6 General requirements and assumptions
CAN communication: see ISO 26021-2 for detailed information.
ACL line with PWM: see ISO 26021-5 for detailed information.
ACL line with bidirectional communication: see ISO 26021-4 for detailed information.
The PCU is not powered by the DTT. A standard diagnostic connector (male) in accordance with ISO 15031-3
is used to connect the DTT/PDT.
7 Description of tool use case 1 – deployment test tool (DTT)
7.1 General
Figure 1 shows an example of a possible setup.

Key
1 standard PC 7 diag out
2 CAN interface 8 ISO 15031-3 type B male connector
3 I/O interface 9 ISO 15031-3 female connector
4 input for CAN interface 10 OEM-specific interface
5 input for IO interface 11 PCU with OEM-specific connector
6 deployment test tool load box
NOTE The OEM-specific interface is used to connect the female ISO 15031-3 connector with the OEM-specific PCU
connector.
Figure 1 — Deployment test tool system overview
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ISO 26021-3:2009(E)
7.2 Hardware requirements for deployment test tool (DTT)
7.2.1 Simulation of CAN messages
To simulate all required CAN messages in accordance with ISO 26021-2 a CAN interface is required.
7.2.2 Simulation of ACL with PWM
The DTT shall be able to generate a PWM signal in accordance with ISO 26021-5 and to modify the timing in
accordance with Table
...