The evidence guide provides advice on assessment and must be read in conjunction with the Performance Criteria, required Skills and Knowledge, the 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

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:

observe safety procedures and requirements

select methods and techniques appropriate to the circumstances

complete preparatory activity in a systematic manner

diagnose and repair a range of light vehicle emission control systems

diagnose and repair light vehicle emission control systems according to workplace, manufacturer and component supplier requirements

present vehicle in a condition that complies with workplace requirements.

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:

using standard workplace practices and procedures

following safety requirements

applying environmental constraints.

Assessment is to comply with relevant:

regulatory requirements

Australian standards

industry codes of practice.

The following resources must be made available for the assessment of this unit:

workplace location or simulated workplace

light vehicles with emission control faults relevant to the qualification being sought

equipment appropriate for the testing of light vehicle emission control systems

specifications and workplace instructions

tools appropriate for the repair, replacement and adjustment of light vehicle emission control systems.

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.

Required skills

communication skills to:

clarify workplace instructions and determine job requirements

gain information from appropriate persons and assistance as required

initiative and enterprise skills to adapt to new and emerging situations in the workplace

learning skills to:

identify sources of information, assistance and expert knowledge to expand knowledge, skills and understanding

participate in self-improvement activities

literacy skills to:

understand quality procedures

read and follow information on written job instructions, specifications, standard operating procedures, charts, lists, drawings and other applicable reference documents

obtain and record measurements

document repairs and parts required

numeracy skills to interpret instruments, gauges and other measuring equipment

planning and organising skills to:

plan own work requirements and prioritise actions to achieve required outcomes and ensure tasks are completed on time

identify risk factors and take action to minimise risk

problem-solving skills to:

determine the underlying causes of faults

recognise a workplace problem or a potential problem and take action

refer problems outside area of responsibility to appropriate person and suggest possible causes

seek information and assistance as required to solve problems

self-management skills to:

select and use appropriate equipment, materials, processes and procedures

recognise limitations and seek timely advice

teamwork skills to apply knowledge of own role to complete activities efficiently to support team activities and tasks

technical skills to use workplace tools relating to the repair of light vehicle emission control systems, including the use of:

specialised tools and equipment

measuring equipment

technology skills to:

operate diagnostic and test equipment

use technology to collect, analyse and provide information.

Required knowledge

WHS regulations, requirements, equipment and material, and personal safety requirements relating to diagnosing and repairing light vehicle emission control systems

dangers of testing exhaust gases

legislation and regulatory requirements relating to light vehicle emission control systems

identification of motor vehicle emissions and their effects on the environment and health

operating principles of light vehicle emission control systems

application, purpose and operation of light vehicle emission control systems, including:

effects of associated systems on vehicle emissions

testing procedures of light vehicle emission control systems

repair procedures of light vehicle emission control systems

post-repair testing procedures of light vehicle emission control systems.

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, 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.

Workplace instructions may include:

computer-generated instructions

verbal instructions

written instructions.

Job requirements may include:

light vehicle emission control system diagnosis and repair methods, processes and equipment.

Workplace health and safety (WHS) requirements:

are those prescribed under legislation, regulations, codes of practice, and workplace policies and procedures

may include:

protective clothing and equipment

use of tools and equipment

handling of material

use of fire-fighting equipment

first aid equipment

hazard control, including control of hazardous materials and toxic substances.

Procedures and information may include:

verbal, written and graphical instructions

signage

work schedules, plans and specifications

work bulletins or memos

material safety data sheets (MSDS)

diagrams or sketches

safe work procedures relating to the diagnosis and repair of light vehicle emission control systems

regulatory and legislative requirements relating to the automotive industry

Australian Design Rules

Engineer’s design specifications and instructions

organisational work specifications and requirements

instructions issued by authorised workplace or external persons

Australian standards

light vehicle emission control systems service requirements and repair manuals.

Light vehicle emission control systems may include:

evaporative emission control

crankcase ventilation

exhaust gas recirculation

diesel exhaust fluid

catalytic converters

diesel particulate filters.

Diagnostic testmay include:

exhaust gas analysis

isolation of fault(s)

component inspection and evaluation.

Faults may include:

rough running

poor performance

excessive fuel consumption

excessive emissions (particulates, hydrocarbons, carbon monoxide, oxides of nitrogen)

excessive oil consumption.

Repair options may include:

component repair procedures, including

removal, replacement and adjustment procedures

dismantle, repair, re-assembly and adjustment procedures.

Post-repair testing may include:

exhaust gas colour assessment

exhaust gas composition analysis

on-board diagnostic system assessment procedures.