Modification History
Release |
Comment |
Release 1 |
New unit of competency |
Unit Descriptor
Unit descriptor |
This unit describes the performance outcomes required to diagnose complex faults in compressed natural gas (CNG) fuel systems in order to initiate action to service, repair, replace or improve performance. The unit involves evaluating system performance and identifying possible operational anomalies. Faults may be mechanical, electrical or electronic by nature, requiring the application of complex diagnostic processes to resolve. Licensing, legislative, regulatory or certification requirements may apply to this unit in some jurisdictions. Users are advised to check with the relevant regulatory authority. |
Application of the Unit
Application of the unit |
Work applies to and includes system fault and failure diagnosis of vehicle CNG fuel systems. The unit relates to an automotive technologist, master technician or subject matter specialist. It encompasses and builds on trade level competencies. |
Licensing/Regulatory Information
Not applicable.
Pre-Requisites
Not applicable.
Employability Skills Information
Employability skills |
This unit contains employability skills. |
Elements and Performance Criteria Pre-Content
Elements describe the essential outcomes of a unit of competency. |
Performance criteria describe the performance needed to demonstrate achievement of the element. Where bold italicised text is used, further information is detailed in the required skills and knowledge section and the range statement. Assessment of performance is to be consistent with the evidence guide. |
Elements and Performance Criteria
ELEMENT |
PERFORMANCE CRITERIA |
1. Identify and confirm the work requirement |
1.1. Workplace instructions and reports are used to determine the nature and objective of system diagnosis requirements 1.2. Specifications for correctly functioning CNG fuel systems are accessed and interpreted 1.3. Workplace health and safety (WHS) requirements , including equipment and system isolation and personal protection needs, are observed and addressed throughout the work 1.4. Effects of systemic deficiencies and discrepancies or faults in CNG fuel systems are identified and confirmed from indirect or direct evidence 1.5. Possible safety impacts of the work are considered and responded to according to regulatory and workplace procedures |
2. Prepare to perform diagnosis |
2.1. Criteria for diagnosis are developed and adopted to meet the objective of the work 2.2. System performance achievements or discrepancies are identified from scrutiny of technical support information and available on-board diagnostic systems 2.3. Diagnostic methods, including complexity of diagnostic process, sequence, tests and testing process are identified and selected from the range of available options 2.4. Testing equipment is obtained and prepared for application according to manufacturer, component supplier and workplace requirements 2.5. Tools and materials required to support the diagnostic process are identified, selected and prepared for use |
3. Apply complex diagnostic process |
3.1. Selected diagnostic processes are followed according to specifications and workplace procedures 3.2. Testing is carried out according to workplace procedures and manufacturer and component supplier specifications 3.3. Findings are verified, if necessary, by using reliable alternate or optional processes 3.4. Conclusions are drawn from findings and documented according to workplace requirements 3.5. Information and detail related to the evaluation of diagnosis is provided to the appropriate person or customer to confirm further action to be taken |
Required Skills and Knowledge
REQUIRED SKILLS AND KNOWLEDGE |
This section describes the skills and knowledge required for this unit. |
Required skills |
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Required knowledge |
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Evidence Guide
EVIDENCE GUIDE |
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The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package. |
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Overview of assessment |
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Critical aspects for assessment and evidence required to demonstrate competency in this unit |
The evidence required to demonstrate competency in this unit must be relevant to workplace operations and satisfy all of the requirements of the performance criteria and required skills and knowledge. A person who demonstrates competency in this unit must be able to:
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Context of, and specific resources for assessment |
Competency is to be assessed in the workplace or a simulated workplace environment that accurately reflects performance in a real workplace setting. Assessment is to occur:
Assessment is to comply with relevant:
The following resources must be made available for the assessment of this unit:
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Method of assessment |
Assessment must satisfy the endorsed Assessment Guidelines of this Training Package. Assessment methods must confirm consistency and accuracy of performance (over time and in a range of workplace relevant contexts) together with the application of required skills and knowledge. Assessment methods must be by direct observation of tasks and include questioning on required skills and knowledge to ensure correct interpretation and application. Competence in this unit may be assessed in conjunction with other units which together form part of a holistic work role. Where applicable, reasonable adjustment must be made to work environments and training situations to accommodate the needs of diverse clients. Assessment processes and techniques must be culturally sensitive and appropriate to the language, literacy and numeracy capacity of the candidate and the work being performed. |
Range Statement
RANGE STATEMENT |
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The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included. |
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Workplace health and safety (WHS) requirements : |
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Faults may include: |
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Tests may include: |
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Testing equipment may include: |
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Diagnostic processes may include: |
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Unit Sector(s)
Competency field |
Mechanical Miscellaneous |
Unit sector |
Technical – Alternative fuels |
Custom Content Section
Not applicable.