Unit of competency
Modification History
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Release |
Comment |
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Release 1 |
New unit of competency. |
Application
This unit describes the performance outcomes required to diagnose complex faults in compressed natural gas (CNG) fuel 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 CNG fuel systems include those in vehicles from all sectors of the industry.
Licensing, legislative, regulatory or certification requirements may apply to this unit in some jurisdictions. Users are advised to check with the relevant regulatory authority.
Competency Field
Mechanical Miscellaneous
Unit Sector
Technical - Alternative Fuels
Elements and Performance Criteria
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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. |
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1. Identify and confirm the work requirement |
1.1 Nature and objective of diagnosis requirements are determined from workplace instructions 1.2 Existence of fault in CNG fuel 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 and environmental requirements |
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2. Prepare to carry out diagnosis |
2.1 Manufacturer specifications and other technical information for CNG fuel 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 |
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3. Apply diagnostic procedures |
3.1 Selected diagnostic process is followed and testing is carried out according to manufacturer specifications, workplace procedures, and safety and environmental requirements 3.2 Diagnostic findings are confirmed, 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 that comply with AS/NZS 2739 Natural gas (NG) fuel systems for vehicle engines 3.4 Conclusions are provided to appropriate personnel or customer to confirm further action to be taken |
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4. Complete work processes |
4.1 Vehicle or machinery 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 according to workplace procedures |
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.
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Skills |
Description |
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Learning skills to: |
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Reading skills to: |
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Writing skills to: |
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Oral communication skills to: |
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Numeracy skills to: |
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Planning and organising skills to: |
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Technology skills to: |
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Range of Conditions
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.
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Safety and environmental requirements must include: |
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Unit Mapping Information
Equivalent to AURTTL4011 Diagnose complex faults in CNG fuel systems
Links
Companion Volume implementation guides are found in VETNet - https://vetnet.gov.au/Pages/TrainingDocs.aspx?q=b4278d82-d487-4070-a8c4-78045ec695b1
