Unit of Competency Mapping – Information for Teachers/Assessors – Information for Learners

AURHTZ001 Mapping and Delivery Guide
Diagnose and repair heavy vehicle emission control systems

Version 1.0
Issue Date: April 2024


Qualification -
Unit of Competency AURHTZ001 - Diagnose and repair heavy vehicle emission control systems
Description
Employability Skills
Learning Outcomes and Application This unit describes the performance outcomes required to diagnose and repair faults in the emission control systems of heavy vehicles. 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 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.
Duration and Setting X weeks, nominally xx hours, delivered in a classroom/online/blended learning setting.

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 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.
Prerequisites/co-requisites
Competency Field Mechanical - Heavy Vehicle
Development and validation strategy and guide for assessors and learners Student Learning Resources Handouts
Activities 		Slides
PPT 		Assessment 1 Assessment 2 Assessment 3 Assessment 4
Elements of Competency Performance Criteria              
Element: Prepare to diagnose and repair heavy vehicle emission control system
  • Job requirements are determined from workplace instructions
  • Diagnostic information is sourced and interpreted
  • Diagnostic options are analysed and those most appropriate to the circumstances are selected
  • Hazards associated with the work are identified and risks are managed
  • Diagnostic tools and equipment are selected and checked for serviceability
       
Element: Diagnose emission control system
  • Diagnostic tests are carried out according to manufacturer specifications, workplace procedures, and environmental and safety requirements
  • Faults are identified from diagnostic test results and causes of faults are determined
  • Diagnosis findings, including recommendations for necessary repairs or adjustments, are reported according to workplace procedures
       
Element: Repair emission control system
  • Repair information is sourced and interpreted
  • Repair options are analysed and those most appropriate to the circumstances are selected
  • Repair tools, equipment and materials are selected and checked
  • Repairs and component replacements and adjustments are carried out according to manufacturer specifications, workplace procedures, and safety and environmental requirements, and without causing damage to components or systems
  • Post-repair testing is carried out according to workplace procedures to confirm fault rectification, and any further problems detected as having been introduced during the repair process are rectified
       
Element: Complete work processes
  • Final inspection is made to ensure work is to workplace expectations and vehicle or system is presented ready for use
  • Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected
  • Tools and equipment are cleaned and stored according to workplace procedures
  • Workplace documentation is processed according to workplace procedures
       
Element: Prepare to diagnose and repair heavy vehicle emission control system
  • Job requirements are determined from workplace instructions
  • Diagnostic information is sourced and interpreted
  • Diagnostic options are analysed and those most appropriate to the circumstances are selected
  • Hazards associated with the work are identified and risks are managed
  • Diagnostic tools and equipment are selected and checked for serviceability
       
Element: Diagnose emission control system
  • Diagnostic tests are carried out according to manufacturer specifications, workplace procedures, and environmental and safety requirements
  • Faults are identified from diagnostic test results and causes of faults are determined
  • Diagnosis findings, including recommendations for necessary repairs or adjustments, are reported according to workplace procedures
       
Element: Repair emission control system
  • Repair information is sourced and interpreted
  • Repair options are analysed and those most appropriate to the circumstances are selected
  • Repair tools, equipment and materials are selected and checked
  • Repairs and component replacements and adjustments are carried out according to manufacturer specifications, workplace procedures, and safety and environmental requirements, and without causing damage to components or systems
  • Post-repair testing is carried out according to workplace procedures to confirm fault rectification, and any further problems detected as having been introduced during the repair process are rectified
       
Element: Complete work processes
  • Final inspection is made to ensure work is to workplace expectations and vehicle or system is presented ready for use
  • Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected
  • Tools and equipment are cleaned and stored according to workplace procedures
  • Workplace documentation is processed according to workplace procedures
       


Evidence Required

List the assessment methods to be used and the context and resources required for assessment. Copy and paste the relevant sections from the evidence guide below and then re-write these in plain English.

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 heavy vehicle emission control 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 emission control system

2.1 Diagnostic tests are carried out according to manufacturer specifications, workplace procedures, and environmental and safety requirements

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

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

3. Repair emission control 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, and safety and environmental requirements, and without causing damage to components or systems

3.5 Post-repair testing is carried out according to workplace procedures 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 or system 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 cleaned and stored according to workplace procedures

4.4 Workplace documentation is processed according to workplace procedures

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 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.

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 heavy vehicle emission control systems, including procedures for working safely with engines producing toxic emissions

environmental requirements, 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

oxides of nitrogen

ozone

sulphur dioxide

particulate matter

hydrocarbons

application, purpose and operating principles 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:

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

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.

Submission Requirements

List each assessment task's title, type (eg project, observation/demonstration, essay, assignment, checklist) and due date here

Assessment task 1: [title]      Due date:

(add new lines for each of the assessment tasks)

Assessment Tasks

Copy and paste from the following data to produce each assessment task. Write these in plain English and spell out how, when and where the task is to be carried out, under what conditions, and what resources are needed. Include guidelines about how well the candidate has to perform a task for it to be judged satisfactory.

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 heavy vehicle emission control 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 emission control system

2.1 Diagnostic tests are carried out according to manufacturer specifications, workplace procedures, and environmental and safety requirements

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

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

3. Repair emission control 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, and safety and environmental requirements, and without causing damage to components or systems

3.5 Post-repair testing is carried out according to workplace procedures 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 or system 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 cleaned and stored according to workplace procedures

4.4 Workplace documentation is processed according to workplace procedures

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 requirements must include:

work health and safety (WHS) and occupational health and safety (OHS) requirements, including procedures for working safely with engines producing toxic emissions.

Environmental requirements must include:

procedures for containing and disposing of emission control system fuels, fluids and components.

Copy and paste from the following performance criteria to create an observation checklist for each task. When you have finished writing your assessment tool every one of these must have been addressed, preferably several times in a variety of contexts. To ensure this occurs download the assessment matrix for the unit; enter each assessment task as a column header and place check marks against each performance criteria that task addresses.

Observation Checklist

Tasks to be observed according to workplace/college/TAFE policy and procedures, relevant legislation and Codes of Practice Yes No Comments/feedback
Job requirements are determined from workplace instructions 
Diagnostic information is sourced and interpreted 
Diagnostic options are analysed and those most appropriate to the circumstances are selected 
Hazards associated with the work are identified and risks are managed 
Diagnostic tools and equipment are selected and checked for serviceability 
Diagnostic tests are carried out according to manufacturer specifications, workplace procedures, and environmental and safety requirements 
Faults are identified from diagnostic test results and causes of faults are determined 
Diagnosis findings, including recommendations for necessary repairs or adjustments, are reported according to workplace procedures 
Repair information is sourced and interpreted 
Repair options are analysed and those most appropriate to the circumstances are selected 
Repair tools, equipment and materials are selected and checked 
Repairs and component replacements and adjustments are carried out according to manufacturer specifications, workplace procedures, and safety and environmental requirements, and without causing damage to components or systems 
Post-repair testing is carried out according to workplace procedures to confirm fault rectification, and any further problems detected as having been introduced during the repair process are rectified 
Final inspection is made to ensure work is to workplace expectations and vehicle or system is presented ready for use 
Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected 
Tools and equipment are cleaned and stored according to workplace procedures 
Workplace documentation is processed according to workplace procedures 
Job requirements are determined from workplace instructions 
Diagnostic information is sourced and interpreted 
Diagnostic options are analysed and those most appropriate to the circumstances are selected 
Hazards associated with the work are identified and risks are managed 
Diagnostic tools and equipment are selected and checked for serviceability 
Diagnostic tests are carried out according to manufacturer specifications, workplace procedures, and environmental and safety requirements 
Faults are identified from diagnostic test results and causes of faults are determined 
Diagnosis findings, including recommendations for necessary repairs or adjustments, are reported according to workplace procedures 
Repair information is sourced and interpreted 
Repair options are analysed and those most appropriate to the circumstances are selected 
Repair tools, equipment and materials are selected and checked 
Repairs and component replacements and adjustments are carried out according to manufacturer specifications, workplace procedures, and safety and environmental requirements, and without causing damage to components or systems 
Post-repair testing is carried out according to workplace procedures to confirm fault rectification, and any further problems detected as having been introduced during the repair process are rectified 
Final inspection is made to ensure work is to workplace expectations and vehicle or system is presented ready for use 
Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected 
Tools and equipment are cleaned and stored according to workplace procedures 
Workplace documentation is processed according to workplace procedures 

Forms

Assessment Cover Sheet

AURHTZ001 - Diagnose and repair heavy vehicle emission control systems
Assessment task 1: [title]

Student name:

Student ID:

I declare that the assessment tasks submitted for this unit are my own work.

Student signature:

Result: Competent Not yet competent

Feedback to student

 

 

 

 

 

 

 

 

Assessor name:

Signature:

Date:

Assessment Record Sheet

AURHTZ001 - Diagnose and repair heavy vehicle emission control systems

Student name:

Student ID:

Assessment task 1: [title] Result: Competent Not yet competent

(add lines for each task)

Feedback to student:

 

 

 

 

 

 

 

 

Overall assessment result: Competent Not yet competent

Assessor name:

Signature:

Date:

Student signature:

Date: