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Unit of competency details

AURHTZ101 - Diagnose and repair heavy vehicle emission control systems (Release 1)

Summary

Usage recommendation:
Current
Mapping:
MappingNotesDate
Supersedes and is equivalent to AURHTZ001 - Diagnose and repair heavy vehicle emission control systems 12/Nov/2020

Release Status:
Current
Releases:
ReleaseRelease date
1 1 (this release) 13/Nov/2020


Qualifications that include this unit

CodeSort Table listing Qualifications that include this unit by the Code columnTitleSort Table listing Qualifications that include this unit by the Title columnUsage RecommendationRelease
AUR31420 - Certificate III in Automotive Diesel Fuel TechnologyCertificate III in Automotive Diesel Fuel TechnologyCurrent
AUR31120 - Certificate III in Heavy Commercial Vehicle Mechanical TechnologyCertificate III in Heavy Commercial Vehicle Mechanical TechnologyCurrent1-2 
AUR31520 - Certificate III in Automotive Diesel Engine TechnologyCertificate III in Automotive Diesel Engine TechnologyCurrent
AUR30520 - Certificate III in Marine Mechanical TechnologyCertificate III in Marine Mechanical TechnologyCurrent1-3 
AUR30320 - Certificate III in Automotive Electrical TechnologyCertificate III in Automotive Electrical TechnologyCurrent1-3 
AUR30420 - Certificate III in Agricultural Mechanical TechnologyCertificate III in Agricultural Mechanical TechnologyCurrent1-3 
AUR31220 - Certificate III in Mobile Plant TechnologyCertificate III in Mobile Plant TechnologyCurrent1-2 
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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  13/Nov/2020 
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Unit Of competency

Modification History

Release 

Comments 

Release 1

This version first released with AUR Automotive Retail, Service and Repair Training Package Version 6.0

Application

This unit describes the skills and knowledge required to diagnose and repair faults in the emission control systems of heavy vehicles. The unit involves preparing for the task, sourcing a diagnostic testing strategy, diagnosing the cause of the fault, carrying out the repair, performing post-repair testing, and completing workplace processes and documentation.

The unit applies to those who work in the automotive service and repair industry. The emission control systems include those in agricultural machinery, heavy commercial vehicles, marine vessels or mobile plant machinery.

No licensing, legislative, regulatory or certification requirements apply to this unit at the time of publication.

Unit Sector

Mechanical – Heavy Vehicle Technical – Emission and Exhaust

Elements and Performance Criteria

ELEMENT 

PERFORMANCE CRITERIA 

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1. Prepare to diagnose and repair heavy vehicle emission control system

1.1 Identify job requirements from workplace instructions

1.2 Identify required information for diagnosis activity

1.3 Analyse diagnostic options and source testing strategy to identify cause of fault using workplace and manufacturer procedures

1.4 Identify hazards and environmental issues associated with diagnose and repair activity, assess potential risks and implement control measures in line with workplace policies and procedures

1.5 Identify tools and equipment required for testing strategy and establish serviceability according to workplace procedures

2. Diagnose heavy vehicle emission control system

2.1 Implement diagnostic tests set out in testing strategy according to manufacturer and workplace procedures, and workplace health and safety requirements

2.2 Identify cause of fault through analysis of diagnostic test results

2.3 Confirm and report cause of fault according to workplace procedures

2.4 Develop and report recommendations for necessary repairs according to workplace procedures

3. Repair heavy vehicle emission control system

3.1 Identify required information for repair activity

3.2 Identify tools, equipment and materials required for repair activity and establish serviceability according to workplace procedures

3.3 Carry out repairs according to workplace and manufacturer procedures, manufacturer specifications, workplace health and safety and environmental requirements

3.4 Carry out post-repair testing according to workplace procedures, workplace health and safety and environmental requirements

4. Complete work processes

4.1 Conduct final inspection according to workplace procedures and confirm vehicle is ready for use

4.2 Clear work area and dispose of or recycle materials according to workplace procedures

4.3 Complete documentation according to workplace procedures

Foundation Skills

This section describes those language, literacy, numeracy and employment skills that are essential to performance but not explicit in the performance criteria.

S KILL 

DESCRIPTION 

Learning

  • Locates required sources of information efficiently
  • Develops a sequenced plan for a specific task

Reading

  • Organises and interprets technical information from workplace procedures, manufacturer procedures and manufacturer specifications

Oral communication

  • Clarifies instructions
  • Obtains information from customers and supervisors

Numeracy

  • Interprets numeric information, including:
  • exhaust gas percentages
  • exhaust gas ratios

Planning and organising

  • Plans own work requirements
  • Prioritises actions to achieve required outcomes
  • Ensures tasks are completed within workplace timeframes

Technology

  • Uses specialised testing equipment

Unit Mapping Information

Supersedes and is equivalent to AURHTZ001 Diagnose and repair heavy vehicle emission control systems.

Links

Companion Volume Implementation Guide is found on VETNet - https://vetnet.gov.au/Pages/TrainingDocs.aspx?q=b4278d82-d487-4070-a8c4-78045ec695b1

 

Assessment requirements

Modification History

Release 

Comments 

Release 1

This version first released with AUR Automotive Retail, Service and Repair Training Package Version 6.0

Performance Evidence

The candidate must demonstrate the ability to complete the tasks outlined in the elements, performance criteria and foundation skills of this unit, including evidence of the ability to:

  • diagnose and repair a fault in at least three of the following heavy vehicle emission control systems:
  • closed crankcase ventilation system
  • exhaust gas recirculation system
  • diesel engine particulate filter system
  • selective catalytic reduction system.

Knowledge Evidence

The candidate must be able to demonstrate knowledge to complete the tasks outlined in the elements, performance criteria and foundation skills of this unit, including knowledge of:

  • methods to locate and interpret information required to diagnose and repair heavy vehicle emission control systems, including:
  • information provided by customers and supervisors
  • manufacturer specifications and procedures or equivalent documentation
  • workplace procedures required to diagnose and repair heavy vehicle emission control systems, including:
  • establishing serviceability of tools and equipment
  • documentation procedures
  • housekeeping procedures, including:
  • examination of tools and equipment
  • storage of equipment
  • identification, tagging and isolation of faulty equipment
  • disposal of excess materials
  • recycling procedures
  • workplace health and safety (WHS) requirements relating to diagnosing and repairing heavy vehicle emission control systems, including procedures for working with vehicles that produce toxic emissions
  • environmental requirements relating to diagnosing and repairing heavy vehicle emission control systems, including procedures for containing and disposing of emission control system fuels, fluids and components
  • heavy vehicle emissions and their effects on the environment and health:
  • carbon monoxide
  • carbon dioxide
  • oxides of nitrogen
  • ozone
  • sulphur dioxide
  • particulate matter
  • hydrocarbons
  • purpose and operation of heavy vehicle emission control systems and components, including:
  • closed crankcase ventilation system
  • exhaust gas recirculation system
  • diesel engine particulate filter system
  • selective catalytic reduction system
  • catalytic converter system
  • diagnostic testing procedures for heavy vehicle emission control systems, including procedures for testing:
  • closed crankcase ventilation system operation
  • exhaust gas recirculation system operation
  • diesel engine particulate filter system operation
  • selective catalytic reduction system operation
  • catalytic converter system operation
  • exhaust gas analysis
  • exhaust smoke analysis
  • repair procedures for heavy vehicle emission control systems, including procedures for removing, replacing and adjusting the system components
  • post-repair testing procedures for heavy vehicle emission control systems.

Assessment Conditions

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 heavy vehicle emission control 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 heavy vehicle emission control system specifications
  • heavy vehicle engines with faults in the emission control systems specified in the performance evidence
  • diagnostic equipment for testing heavy vehicle emission control systems
  • tools, equipment and materials appropriate for repairing, replacing and adjusting heavy vehicle emission control systems.

Assessors of this unit must satisfy the requirements for assessors in applicable vocational education and training legislation, frameworks and/or standards.

Links

Companion Volume Implementation Guide is found on VETNet - https://vetnet.gov.au/Pages/TrainingDocs.aspx?q=b4278d82-d487-4070-a8c4-78045ec695b1