Unit of competency Outline
Date retreived
21/07/2026 11:27 PM AWST
21/07/2026 11:27 PM AWST
Whilst all efforts are made to provide accurate and timely information from the relevant source/documentation, please be aware that the information supplied may not be the most current version. The accuracy of the detail has not been confirmed by the Department and therefore should not be relied upon without first confirming the contents.
Analyse and evaluate gas fuel system faults
Analyse and evaluate gas fuel system faults
Unit of competency
National Code
AURTTL5014
AURTTL5014
State Code
WF435
WF435
TGA Status
Replaced
Replaced
DTWD Status
Replaced
Replaced
State Implementation and Classification
Approved Date
08/07/2013
Field of Education
030503 - Vehicle Mechanics
Original Release Date
08/07/2013
Nominal Hours
36
Description
This unit covers the competence to analyse and evaluate gas fuel systems in order to initiate action to sustain, vary or enhance performance. Licensing, legislative, regulatory or certification requirements may apply to this unit in some jurisdictions. Users are advised to check with the relevant regulatory authority.
Notes
Elements and Performance Criteria
1. Identify and confirm the work requirement
- 1.1. Work instructions and reports are used to determine the nature and objective of the analysis and evaluation requirements.
- 1.2. Benchmark specifications for correctly functioning gas fuel systems are accessed and interpreted.
- 1.3. WHS requirements, including regulatory requirements, equipment and system isolation requirements and personal protection needs are observed throughout the work.
- 1.4. The effects of any systemic deficiencies/discrepancies or faults are identified and confirmed from indirect and/or direct evidence.
- 1.5. Possible safety impacts of the work are considered and responded to in accordance with regulatory and enterprise obligations and practices.
2. Prepare for analysis and evaluation
- 2.1. Evaluative criteria are developed/adopted to meet the objective of the work.
- 2.2. System performance achievements and/or discrepancies are identified from an analysis of technical support information and available on-board diagnostic systems.
- 2.3. The most appropriate analytical and evaluative methodology including diagnostic process, sequence, tests and testing equipment are developed and/or identified and selected from the range of available options.
- 2.4. Testing equipment is obtained and prepared for application in accordance with regulatory, manufacturer/component supplier and enterprise requirements.
- 2.5. Tools and material required to support the diagnostic process are identified, selected and prepared for use.
- 2.6. Gas fuel system components are prepared for the diagnostic process including park-up, isolation and cleaning requirements.
3. Apply the analysis and evaluative methodology
- 3.1. The selected analytical and diagnostic process is followed in accordance with specifications and directions and/or the locally authorised method.
- 3.2. Tests and testing equipment are applied in accordance with regulatory requirements and the manufacturer/component supplier specifications.
- 3.3. Analytical and other diagnostic findings are verified, if necessary, by using reliable alternate or optional processes, and documented.
- 3.4. Analytical findings and results are evaluated against the agreed criteria.
- 3.5. Valid conclusions are drawn from the available evidence and documented to enterprise requirements.
- 3.6. Information and detail related to the analysis and evaluation is provided to the appropriate parties in accordance with regulatory and commercial obligations.
4. Select response measure
- 4.1. Options for responding to the objective or need are identified from further research of technical support information.
- 4.2. The most appropriate response option is selected from an analysis of the options, the prevailing circumstance, regulatory requirements and commercial policies.
- 4.3. The selected response option is documented and reported in accordance with regulatory and enterprise requirements and practices.
5. Restore the workplace
- 5.1. Material that can be reused is collected and stored.
- 5.2. Testing equipment and other support material are cleaned, maintained and prepared ready for further use or stored in accordance with manufacturer/component supplier specifications and enterprise requirements.
- 5.3. Waste and scrap is removed following workplace procedures.
- 5.4. Equipment and work area are cleaned and inspected for serviceable condition in accordance with workplace procedures.
- 5.5. Unserviceable equipment is tagged and faults identified in accordance with workplace.
RANGE STATEMENT
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.
Failure analysis and evaluation process
The objective of the failure analysis and evaluation process may be to determine fault rectification measures, to effect variation in system characteristics and parameters or to enhance system performance.
System faults
Gas fuel system faults covered by this unit are to include direct failures in safety systems, electrical systems, fuel delivery system, sequential vapour injection, fuel container, calibration and adjustment specifications, component specifications, component assembly and system modifications.
System failures
Gas fuel system failures covered by this unit are to include indirect faults caused by the influence of external systems which may or may not be faulty in their primary operations.
Unit context
Work is carried out in accordance with legislative obligations, Australian Design Rules, environmental legislation, relevant health regulations, manual handling procedures and organisation insurance requirements.
WHS
WHS requirements, vehicle industry regulations, safety management systems, hazardous substances and dangerous goods code and safe operating procedures.
Evaluative criteria
Evaluative criteria, sometimes referred to as success factors, detail the criteria against which the achievement of the objectives of the analysis are judged. They are to include statistically based criteria and may include other measures.
Isolation procedures
Equipment isolation procedures are to regulatory, industry and enterprise standards.
Testing equipment
Testing equipment is to include multimeters, data scanners, test lights, pressure/vacuum gauges, water and mercury manometers, electronic leak detectors, engine tune oscilloscopes, four-gas engine analyser and exhaust pressure gauge, and may include other manufacturer testing equipment.
Tests
Tests to be conducted are to include liquid and vapour pressure, leakage, operation of all safety components and systems, electrical control systems, exhaust emissions, engine performance, gas system performance and data interpretation and readings related to direct, indirect and intermittent causes.
Personal protective equipment
Personal protective equipment is to include that prescribed under legislation, regulations and enterprise policies and practices.
Information and procedures
Workplace procedures relating to the use of tools and equipment.
Workplace procedures relating to reporting and communication.
Manufacturer/component supplier specifications and application procedures for testing equipment and material.
Manufacturer/component supplier specifications, schematics and operational procedures related to stability/steering and suspension systems.
Australian Design Rules.
Gas fuel system regulations.
Vehicle industry publications related to emerging gas fuel system technology and technology changes.
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.
Failure analysis and evaluation process
The objective of the failure analysis and evaluation process may be to determine fault rectification measures, to effect variation in system characteristics and parameters or to enhance system performance.
System faults
Gas fuel system faults covered by this unit are to include direct failures in safety systems, electrical systems, fuel delivery system, sequential vapour injection, fuel container, calibration and adjustment specifications, component specifications, component assembly and system modifications.
System failures
Gas fuel system failures covered by this unit are to include indirect faults caused by the influence of external systems which may or may not be faulty in their primary operations.
Unit context
Work is carried out in accordance with legislative obligations, Australian Design Rules, environmental legislation, relevant health regulations, manual handling procedures and organisation insurance requirements.
WHS
WHS requirements, vehicle industry regulations, safety management systems, hazardous substances and dangerous goods code and safe operating procedures.
Evaluative criteria
Evaluative criteria, sometimes referred to as success factors, detail the criteria against which the achievement of the objectives of the analysis are judged. They are to include statistically based criteria and may include other measures.
Isolation procedures
Equipment isolation procedures are to regulatory, industry and enterprise standards.
Testing equipment
Testing equipment is to include multimeters, data scanners, test lights, pressure/vacuum gauges, water and mercury manometers, electronic leak detectors, engine tune oscilloscopes, four-gas engine analyser and exhaust pressure gauge, and may include other manufacturer testing equipment.
Tests
Tests to be conducted are to include liquid and vapour pressure, leakage, operation of all safety components and systems, electrical control systems, exhaust emissions, engine performance, gas system performance and data interpretation and readings related to direct, indirect and intermittent causes.
Personal protective equipment
Personal protective equipment is to include that prescribed under legislation, regulations and enterprise policies and practices.
Information and procedures
Workplace procedures relating to the use of tools and equipment.
Workplace procedures relating to reporting and communication.
Manufacturer/component supplier specifications and application procedures for testing equipment and material.
Manufacturer/component supplier specifications, schematics and operational procedures related to stability/steering and suspension systems.
Australian Design Rules.
Gas fuel system regulations.
Vehicle industry publications related to emerging gas fuel system technology and technology changes.
EVIDENCE GUIDE
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.
Overview of assessment
Critical aspects for assessment and evidence required to demonstrate competency in this unit
Interpret work order and locate and apply relevant information.
Apply safety requirements including the isolation of equipment and the use of personal protective equipment.
Follow work instructions, operating procedures and inspection processes to:
minimise the risk of injury to self and others
prevent damage and wastage of goods, equipment and products
maintain required production output and product quality.
Diagnose gas fuel system faults, including one fault from each category listed below:
poor engine performance
increased emission levels
impact of a prior system modification
incorrect installation of the gas system
caused by an influence from an external system.
Accurately record and report the diagnostic process and findings and recommended rectification.
Work effectively with others.
Modify activities to cater for variations in workplace context and environment.
Context of, and specific resources for assessment
Assessment may occur on the job or in a workplace simulated facility with relevant process equipment, material, work instructions and deadlines.
Access to a realistic requirement and objectives for analysis and evaluation, operational gas fuel systems with real or simulated faults, monitoring processes and testing equipment appropriate to the objectives, research facilities and technical information and a realistic work environment.
Method of assessment
Assessment of this competency is most likely to be project related under real or simulated conditions and require portfolios or other forms of indirect evidence of process. Direct evidence may include certification of compliance of the final outcome/product or authorisation for use by a competent authority.
Assessment must confirm the inference that competency is able not only to be satisfied under the particular circumstances, but is able to be transferred to other circumstances.
Competence in this unit may be assessed in conjunction with other functional units which together form part of the holistic work role
Guidance information for assessment
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.
Overview of assessment
Critical aspects for assessment and evidence required to demonstrate competency in this unit
Interpret work order and locate and apply relevant information.
Apply safety requirements including the isolation of equipment and the use of personal protective equipment.
Follow work instructions, operating procedures and inspection processes to:
minimise the risk of injury to self and others
prevent damage and wastage of goods, equipment and products
maintain required production output and product quality.
Diagnose gas fuel system faults, including one fault from each category listed below:
poor engine performance
increased emission levels
impact of a prior system modification
incorrect installation of the gas system
caused by an influence from an external system.
Accurately record and report the diagnostic process and findings and recommended rectification.
Work effectively with others.
Modify activities to cater for variations in workplace context and environment.
Context of, and specific resources for assessment
Assessment may occur on the job or in a workplace simulated facility with relevant process equipment, material, work instructions and deadlines.
Access to a realistic requirement and objectives for analysis and evaluation, operational gas fuel systems with real or simulated faults, monitoring processes and testing equipment appropriate to the objectives, research facilities and technical information and a realistic work environment.
Method of assessment
Assessment of this competency is most likely to be project related under real or simulated conditions and require portfolios or other forms of indirect evidence of process. Direct evidence may include certification of compliance of the final outcome/product or authorisation for use by a competent authority.
Assessment must confirm the inference that competency is able not only to be satisfied under the particular circumstances, but is able to be transferred to other circumstances.
Competence in this unit may be assessed in conjunction with other functional units which together form part of the holistic work role
Guidance information for assessment
Replaces
| State Code | National Code | Title | Type |
|---|---|---|---|
| W5105 | AURT477093A | Analyse and evaluate gas fuel system faults | Unit of competency |
Replaced By
| State Code | National Code | Title | Type |
|---|---|---|---|
| AXA49 | AURTTL014 | Analyse and evaluate faults in gas fuel systems | Unit of competency |
| State Code | National Code | Title | Type |
|---|---|---|---|
| J423 | AUR50212 | Diploma of Automotive Technology | Qualification |