^
 
 

Unit of competency details

AURTTL002 - Diagnose and repair CNG fuel systems (Release 1)

Summary

Usage recommendation:
Superseded
Mapping:
MappingNotesDate
Is superseded by and equivalent to AURTTL102 - Diagnose and repair CNG fuel systems 12/Nov/2020
Supersedes and is equivalent to AURTTL3002 - Diagnose and repair CNG fuel systems 13/Apr/2016

Releases:
ReleaseRelease date
1 1 (this release) 14/Apr/2016

Companion volumes:
Unit of competency Assessment requirements

Delivery:
Find RTOs approved to deliver this unit of competency.

Training packages that include this unit

Qualifications that include this unit

Skill sets that include this unit

Classifications

SchemeCodeClassification value
ASCED Module/Unit of Competency Field of Education Identifier 030503 Vehicle Mechanics  

Classification history

SchemeCodeClassification valueStart dateEnd date
ASCED Module/Unit of Competency Field of Education Identifier 030503 Vehicle Mechanics  09/Aug/2016 
The content being displayed has been produced by a third party, while all attempts have been made to make this content as accessible as possible it cannot be guaranteed. If you are encountering issues following the content on this page please consider downloading the content in its original form

Content

Compare:
Compare content of this unit of competency with other releases or training components
Download:

Unit of competency

Modification History

Release 

Comment 

Release 1 

New unit of competency.

Application

This unit describes the performance outcomes required to diagnose and repair faults in the compressed natural gas (CNG) fuel systems of vehicles or machinery. It involves preparing for the task, selecting the correct diagnostic procedure, carrying out the diagnosis and the repair, performing post-repair testing, and completing workplace processes and documentation.

It applies to those working in the automotive service and repair industry. The unit applies to CNG fuel systems in agricultural machinery, forklifts, heavy commercial vehicles, light vehicles or mobile plant machinery.

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

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. Prepare to diagnose and repair CNG fuel system

1.1 Job requirements are determined from workplace instructions

1.2 Diagnostic information is sourced and interpreted

1.3 Diagnostic options are analysed and those most appropriate to the circumstances are selected

1.4 Hazards associated with the work are identified and risks are managed

1.5 Diagnostic tools and equipment are selected and checked for serviceability

2. Diagnose CNG fuel system

2.1 Diagnostic tests are performed according to workplace procedures and safety and environmental requirements 

2.2 Faults are identified from diagnostic test results and causes of faults are determined

2.3 Diagnosis findings are reported according to workplace procedures, including recommendations for necessary repairs or adjustments

3. Repair CNG fuel system

3.1 Repair information is sourced and interpreted

3.2 Repair options are analysed and those most appropriate to the circumstances are selected

3.3 Repair tools, equipment and materials are selected and checked

3.4 Repairs and component replacements and adjustments are carried out according to manufacturer specifications, workplace procedures, safety and environmental requirements, and AS/NZ 2739 Natural gas (NG) fuel systems for vehicle engines, and without causing damage to components or system

3.5 Post-repair testing is carried out according to workplace procedures and AS/NZ 2739 to confirm fault rectification, and any further problems detected as having been introduced during the repair process are rectified

4. Complete work processes

4.1 Final inspection is made to ensure work is to workplace expectations and vehicle is presented ready for use

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 expectations

4.4 Workplace documentation is processed 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.

Skills 

Description 

Learning skills to:
  • locate appropriate sources of information efficiently.

Reading skills to:
  • interpret Australian standards relating to repairing CNG fuel systems
  • interpret information from manufacturer and workshop literature when seeking CNG fuel system specifications and procedures.

Writing skills to:
  • legibly and accurately fill out workplace literature when reporting diagnostic findings, making repair recommendations, and recording parts and material used.

Oral communication skills to:
  • clarify instructions
  • report diagnostic findings and make repair recommendations.

Numeracy skills to:
  • measure CNG fuel system components and use basic mathematical operations, including addition, subtraction, multiplication and division, to calculate distances, areas, volumes, tolerances and deviations from manufacturer specifications.

Planning and organising skills to:
  • plan own work requirements and prioritise actions to achieve required outcomes and ensure tasks are completed within workplace timeframes.

Technology skills to:
  • use precision measuring equipment, including exhaust gas analyser

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.

Safety and environmental requirements  must include:
  • work health and safety (WHS) and occupational health and safety (OHS) requirements, including procedures for:
  • working with extremely cold and flammable gas
  • storing CNG
  • environmental requirements, including procedures for preventing loss of gas to atmosphere.

Unit Mapping Information

Equivalent to AURTTL3002 Diagnose and repair 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

 

Assessment requirements

Modification History

Release 

Comment 

Release 1 

New unit of competency.

Performance Evidence

Before competency can be determined, individuals must demonstrate they can perform the following according to the standards defined in this unit’s elements, performance criteria, range of conditions and foundation skills:

  • diagnose and repair a fault in two vehicles with different compressed natural gas (CNG) fuel systems.

Knowledge Evidence

Individuals must be able to demonstrate knowledge of:

  • work health and safety (WHS) and occupational health and safety (OHS) requirements relating to diagnosing and repairing CNG fuel systems, including procedures for:
  • working with extremely cold and flammable gas
  • storing CNG
  • environmental requirements, including procedures for preventing loss of gas to atmosphere
  • key requirements of AS/NZ 2739 Natural gas (NG) fuel systems for vehicle engines
  • application, purpose and operating principles of CNG fuel systems and associated components, including:
  • mixers
  • regulators
  • fuel lock-off valves
  • filters
  • tanks
  • control valves and switches
  • diagnostic testing procedures for CNG fuel systems, including:
  • mixers
  • regulators
  • fuel lock-off valves
  • electronic control valves and switches
  • repair procedures for CNG fuel systems, including procedures for removing, replacing and adjusting the systems
  • post-repair testing procedures for CNG fuel systems.

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 CNG fuel 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 vehicle CNG fuel system specifications
  • AS/NZ 2739 Natural gas (NG) fuel systems for vehicle engines
  • two vehicles with different CNG fuel systems with faults
  • diagnostic equipment for CNG fuel systems, including exhaust gas analyser
  • tools, equipment and materials appropriate for repairing 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

Companion Volume implementation guides are found in VETNet - https://vetnet.gov.au/Pages/TrainingDocs.aspx?q=b4278d82-d487-4070-a8c4-78045ec695b1

Back to top