Application
This unit describes the performance outcomes required to diagnose complex faults in light vehicle or light commercial vehicle embedded network safety systems and determine the repair action necessary to restore system performance. It involves confirming the existence of a fault, choosing the diagnostic procedure and tools, applying the diagnostic procedure, reporting conclusions and making repair recommendations.
Complex faults are outside the normal scope of a technician’s diagnosis and repair work. They include intermittent faults, multi-system faults, faults introduced as a result of system repairs, and indirect faults caused by the influence of external systems, requiring the application of complex diagnostic processes to resolve.
It applies to those working in the automotive service and repair industry. The vehicle network safety systems include those of light vehicles or light commercial vehicles.
No licensing, legislative, regulatory or certification requirements apply to this unit at the time of publication.
Elements and Performance Criteria
Elements Elements describe the essential outcomes. | Performance Criteria Performance criteria describe the performance needed to demonstrate achievement of the element. Where bold and italicised text is used, further information is detailed in the range of conditions section. |
1. Identify and confirm the work requirement | 1.1 Nature and objective of diagnostic requirements are determined from workplace instructions 1.2 Existence of fault in vehicle safety system is confirmed from direct or indirect evidence 1.3 Hazards associated with the work are identified and risks are managed according to workplace procedures and safety requirements |
2. Prepare to carry out diagnosis | 2.1 Manufacturer specifications and other technical information for safety system are accessed and interpreted 2.2 Diagnostic procedures and options are identified 2.3 Diagnostic method sequence, tests and testing processes are selected from the range of available options 2.4 Testing equipment is selected and prepared according to manufacturer specifications and workplace procedures 2.5 Tools, equipment and materials required to support the diagnostic process are identified, selected and prepared for use |
3. Apply diagnostic procedures | 3.1 Selected diagnostic process is followed and testing is carried out according to manufacturer specifications, workplace procedures and safety requirements 3.2 Diagnostic findings are verified, as required, by using reliable alternative or optional process according to manufacturer specifications and workplace procedures 3.3 Conclusions are drawn from findings and documented according to workplace procedures, including recommendations for necessary repairs 3.4 Conclusions are provided to appropriate personnel or customer to confirm further action to be taken |
4. Complete work processes | 4.1 Vehicle is presented ready to be repaired or returned to the customer 4.2 Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected 4.3 Tools and equipment are checked and stored, and any faulty electrical equipment is identified, tagged and isolated according to workplace procedures 4.4 Workplace documentation is processed according to workplace procedures |
Evidence of Performance
Before competency can be determined, individuals must demonstrate they can perform the following according to the standard defined in this unit’s elements, performance criteria, range of conditions and foundation skills:
diagnose complex faults in the safety systems of two different light vehicles or light commercial vehicles
the above diagnosis must involve two of the following types of complex faults:
an intermittent fault
a fault that affects more than one system
a fault introduced as a result of a system repair
an indirect fault caused by the influence of external systems.
Evidence of Knowledge
Individuals must be able to demonstrate knowledge of:
work health and safety (WHS) and occupational health and safety (OHS) requirements relating to diagnosing complex faults in light vehicle safety systems, including procedures for:
identifying hazards and controlling risks associated with:
working with high voltages on vehicle electrical systems
working around the vehicle’s supplementary restraint systems (SRS), including airbags
wearing jewellery while working around high electrical currents
disarming vehicle airbag and safety restraint systems
types of complex faults relating to light vehicle safety systems, including:
intermittent
multi-system
introduced as a result of system repair
indirect, caused by the influence of external systems
methods for locating and content of manufacturer specifications, workplace procedures and other technical information relating to light vehicle safety systems
types, function and operation of light vehicle safety systems, including:
active and passive collision avoidance
adaptive front lighting systems
airbag systems
lane keeping assist
occupant detection systems
radar cruise control
roll-over protection
seatbelt pre-tensioners
testing procedures for light vehicle safety systems, including:
using digital multimeter, scan tool and oscilloscope
vehicle dynamic and static testing
component failure analysis
vehicle continuous and non-continuous monitored systems
types, functions, operation and limitations of diagnostic testing equipment required to diagnose complex faults in light vehicle safety systems
procedures for accessing and interpreting scan tool system data, including:
diagnostic trouble codes (DTCs), including:
conditions that set the DTCs
conditions for running DTCs
live data
freeze frame data
waveforms
methods and processes for documenting and reporting diagnostic findings and recommendations.
Assessment Conditions
Assessors must satisfy NVR/AQTF assessor requirements.
Competency is to be assessed in the workplace or a simulated environment that accurately reflects performance in a real workplace setting.
Assessment must include direct observation of tasks.
Where assessment of competency includes third-party evidence, individuals must provide evidence that links them to the light vehicle safety systems that they have worked on, e.g. repair orders.
Assessors must verify performance evidence through questioning on skills and knowledge to ensure correct interpretation and application.
The following resources must be made available:
automotive repair workplace or simulated workplace
workplace instructions
manufacturer light vehicle safety system specifications
two different light vehicles or light commercial vehicles with complex faults in their safety systems
light vehicle safety system diagnostic equipment, including:
digital multimeter
scan tool
tools, equipment and materials appropriate for diagnosing complex faults in light vehicle safety systems.
Foundation Skills
This section describes those language, literacy, numeracy and employment skills that are essential to performance and are not explicit in the performance criteria.
Skills | Description |
Learning skills to: | locate and evaluate appropriate sources of information efficiently apply diagnostic skills to different vehicles. |
Reading skills to: | research, organise and interpret technical information from manufacturer and workshop literature when seeking light vehicle safety system specifications and procedures. |
Writing skills to: | legibly and accurately fill out workplace documentation when reporting diagnostic findings, making repair recommendations, and recording parts and material used. |
Oral communication skills to: | clarify instructions, gain information from customers and supervisors, report diagnostic findings and make repair recommendations. |
Numeracy skills to: | measure safety system components and use basic mathematical operations, including addition and subtraction, to calculate tolerances and deviations from manufacturer specifications. |
Planning and organising skills to: | plan own work requirements and prioritise and sequence actions to achieve required outcomes and ensure tasks are completed within workplace timeframes. |
Technology skills to: | use specialised diagnostic equipment, including: digital multimeters scan tools. |
Range Statement
This section specifies work environments and conditions that may affect performance. Essential operating conditions that may be present (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) are included. Bold italicised wording, if used in the performance criteria, is detailed below.
Safety requirements must include: | work health and safety (WHS) and occupational health and safety (OHS) requirements, including procedures for: identifying hazards and controlling risks associated with: working with high voltages on vehicle electrical systems working around the vehicle’s supplementary restraint systems (SRS), such as airbags wearing jewellery while working around high electrical currents disarming vehicle airbag and safety restraint systems, as required. |
Sectors
Technical - Electrical and Electronic
Competency Field
Electrical