24000 version 1
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Demonstrate knowledge of motor vehicle restraint systems
Level
3
Credits
5
Purpose
This theory-based unit standard is for people in the motor and related
industries. People credited with this unit standard are able to demonstrate
knowledge of: front air bag systems; air bag system diagnosis; seat belt
systems; side air bag and air curtain systems; and discriminating restraint
systems.
Subfield
Motor Industry
Domain
Vehicle Bodywork
Status
Registered
Status date
26 November 2007
Date version published
26 November 2007
Planned review date
31 December 2012
Entry information
Recommended: Unit 22800, Describe safe working
precautions on vehicles equipped with air bags and
seatbelt pre-tensioners, or demonstrate equivalent
knowledge and skills.
Accreditation
Evaluation of documentation and visit by NZQA and
industry.
Standard setting body (SSB)
NZ Motor Industry Training Organisation (Incorporated)
Accreditation and Moderation Action Plan (AMAP) reference
0014
This AMAP can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Special notes
1
Legislation relevant to this unit standard includes but is not limited to – Hazardous
Substances and New Organisms Act 1996; Health and Safety in Employment Act
1992; Land Transport Rules: Frontal Impact 2001, Rule 32006/1; Heavy Vehicles
2004, Rule 31002; Seatbelts and Seatbelt Anchorages 2002, Rule 32011; Vehicle
Repair 1998, Rule 34001.
2
Land Transport Rules are produced for the Minister of Transport by Land Transport
New Zealand. These rules are available online at
http://www.landtransport.govt.nz/rules/.
 New Zealand Qualifications Authority 2016
24000 version 1
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3
Definition
Service information may include but is not limited to – technical information of a
vehicle, machine, or product detailing operation; installation and servicing
procedures; manufacturer instructions and specifications; technical terms and
descriptions; and detailed illustrations. This can be accessed in hard copy or
electronic format and is normally sourced from the manufacturer.
4
Air bags and seatbelt pre-tensioners contain an explosive charge and are therefore
classified as explosive articles under the Hazardous Substances and New
Organisms Act 1996.
Elements and performance criteria
Element 1
Demonstrate knowledge of front air bag systems.
Performance criteria
1.1
Differences between active and passive restraints are defined in accordance
with vehicle manufacturer specifications.
1.2
The importance of following the vehicle manufacturer service instructions to
assist in the repair of a restraint system is explained in accordance with vehicle
manufacturer specifications.
1.3
Main components of an air bag system and their location on a vehicle are
identified in accordance with vehicle manufacturer specifications.
Range
1.4
includes but is not limited to – air bag modules; wiring harnesses;
coil, clock spring, or cable reel; restraint system electronic control
module; sensors.
Factors that may cause air bag deployment are identified in accordance with
vehicle manufacturer specifications.
Range
includes but is not limited to – vehicle speed; object being struck;
energy absorption; location of impact; angle of impact;
deceleration of the vehicle; inadvertent tampering, testing, or
handling.
1.5
Disabling procedures before starting repairs are explained in accordance with
service information.
1.6
Cleanup procedures for a deployed air bag are explained in accordance with
service information.
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24000 version 1
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1.7
Impact sensor circuit operation is described in accordance with vehicle
manufacturer specifications.
Range
1.8
Components of an air bag module are identified in accordance with vehicle
manufacturer specifications.
Range
1.9
includes but is not limited to – using the correct service manual,
storing an air bag module, carrying an air bag module, repairing or
welding on a vehicle, testing electrical connections, adhering to
warnings printed on inflator module.
Types of inflator are identified in accordance with vehicle manufacturer
specifications.
Range
1.11
includes but is not limited to – air bag, inflator module, electrical
connectors, trim cover.
Precautions to take when working on an air bag system are described in
accordance with service information.
Range
1.10
includes but is not limited to – rear sensors (safing or arming
sensors), front sensors (discriminating, crash, impact sensors).
includes but is not limited to – conventional inflator using nitrogen
gas, hybrid inflator using argon gas.
The resultant damage effects of deployment to surrounding components are
described in accordance with vehicle manufacturer specifications.
Range
includes but is not limited to – packing powder dust, heat
generated, electrical and electronic components, instrument
panels, windscreen areas, steering column.
1.12
Removal and installation procedures for an air bag module are described in
accordance with service information.
1.13
Functions of the electronic control module (ECM) in an air bag system are
identified in accordance with vehicle manufacturer specifications.
Range
may include but is not limited to – checking the system for faults,
controlling the operation of the air bag warning lamp, recording
diagnostic and collision information, providing backup power.
1.14
Removal and installation procedures of a clock spring are described in
accordance with service information.
1.15
Functions and location of knee bolsters or diverters are identified in accordance
with vehicle manufacturer specifications.
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Element 2
Demonstrate knowledge of air bag system diagnosis.
Performance criteria
2.1
Diagnostic methods used for air bag systems are identified in accordance with
service information.
Range
2.2
The importance of following service information when diagnosing faults is
explained in accordance with manufacturer specifications.
Range
2.3
includes but is not limited to – flash code diagnostics (including
warning lamp), specialty tester, scan tool diagnostics, test harness
measurements.
includes but is not limited to – tools and workshop equipment, test
equipment, interpretation of fault codes, safety, preventing
damage to components.
Procedures to take after the repair is completed are identified in accordance
with service information.
Range
includes but is not limited to – clearing fault codes, road testing,
checking all accessories for proper operation, warning lamp
operation.
Element 3
Demonstrate knowledge of seat belt systems.
Performance criteria
3.1
Types of seat belt systems are identified in accordance with vehicle
manufacturer specifications.
Range
3.2
Seat belt faults are described in accordance with legislative requirements.
Range
3.3
includes but is not limited to – anchorages, webbing, stitching,
stalks, twisting, missing labels, locking mechanism and retraction
systems, buckles and tongues.
Retractor type seat belt inspection procedures are described in accordance with
service information.
Range
3.4
includes but is not limited to – manual seat belts, pre-tensioner
seat belts, motorised seat belts.
visual inspection, dynamic test; single-sensitive, dual-sensitive.
Seat belt pre-tensioner operation is described in accordance with vehicle
manufacturer specifications.
 New Zealand Qualifications Authority 2016
24000 version 1
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Element 4
Demonstrate knowledge of side air bag and air curtain systems.
Performance criteria
4.1
Mounting locations of side air bag and air curtain systems are identified in
accordance with vehicle manufacturer specifications.
Range
4.2
includes but is not limited to – seat, door panel, A-pillar, roof rail,
head rest.
Removal and replacement procedures for side air bag and air curtain systems
are described in accordance with service information.
Element 5
Demonstrate knowledge of discriminating restraint systems.
Performance criteria
5.1
Types of discriminating restraint systems are identified in accordance with
vehicle manufacturer specifications.
Range
includes but is not limited to – threshold deployment of either or
both air bag or seat belt tensioner, dual-stage air bags, dual-depth
air bags, seat-occupied sensored systems, front passenger seat
disable, roll-over pop-up bars.
Please note
Providers must be accredited by NZQA, or an inter-institutional body with delegated
authority for quality assurance, before they can report credits from assessment against
unit standards or deliver courses of study leading to that assessment.
Industry Training Organisations must be accredited by NZQA before they can register
credits from assessment against unit standards.
Accredited providers and Industry Training Organisations assessing against unit standards
must engage with the moderation system that applies to those standards.
Accreditation requirements and an outline of the moderation system that applies to this
standard are outlined in the Accreditation and Moderation Action Plan (AMAP). The
AMAP also includes useful information about special requirements for organisations
wishing to develop education and training programmes, such as minimum qualifications for
tutors and assessors, and special resource requirements.
Comments on this unit standard
Please contact the NZ Motor Industry Training Organisation (Incorporated)
info@mito.org.nz if you wish to suggest changes to the content of this unit standard.
 New Zealand Qualifications Authority 2016