Assessor Resource

AURETR023
Diagnose and repair spark ignition engine management systems

Assessment tool

Version 1.0
Issue Date: March 2024


This unit describes the performance outcomes required to diagnose and repair faults in the spark ignition engine management 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 an automotive service and repair industry. Spark ignition engine management systems include those in agricultural machinery, heavy commercial vehicles, light vehicles, marine vessels, mobile plant machinery, motorcycles or outdoor power equipment.

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

You may want to include more information here about the target group and the purpose of the assessments (eg formative, summative, recognition)



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 spark ignition engine management 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 engine management system

2.1 Diagnostic tests are carried out according to workplace proceduresand safety requirements without causing damage to components or systems

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

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

3. Repair engine management 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 according to manufacturer specifications and workplace procedures

3.4 Repairs and component replacements and adjustments are carried out according to manufacturer specifications, workplace procedures and safety 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 machinery 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 and any faulty electrical equipment is identified, tagged 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 standard defined in the unit’s elements and performance criteria, range of conditions and foundation skills:

diagnose and repair a fault in the spark ignition engine management systems of three different vehicles or machinery, including:

faults in two system input sensors

faults in one system output actuator.

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 spark ignition engine management systems, including procedures for:

using specialised tools and equipment

using appropriate personal protective equipment (PPE)

identifying hazards and controlling risks associated with:

working on vehicle high voltage ignition systems

wearing jewellery while working around high current wiring systems

working with high pressure petrol fuel systems

operating principles of spark ignition engine management systems and associated components, including:

combustion, including:

air-fuel ratios and chemistry of combustion

composition of petrol fuel, including octane rating

indirect and direct fuel injection

application, purpose and operation of spark ignition engine management systems and components, including:

fuel system, including:

fuel filters

fuel pumps

fuel pressure regulators

fuel injectors

electronic control system, including the following system inputs:

throttle position sensors

coolant temperature sensors

oxygen sensors

load sensors and air flow meters

intake air temperature sensors

crankshaft position sensors

camshaft position sensors

battery voltage

accessory load sensors

knock sensors

key features of electronic control units (ECUs), including:

read-only memory (ROM)

programmable read-only memory (PROM)

electronically erasable programmable read-only memory (EEPROM)

random access memory (RAM)

multiplexing

adaptive learning

short-term fuel trim (STFT)

long-term fuel trim (LTFT)

sensor reference voltages and sensor grounds

system outputs, including:

injectors

idle speed control devices

fuel pump relays

engine cooling fans

air conditioning compressor controls

broadband intake manifolds

exhaust gas recirculation solenoid controls

carbon canister purge controls

throttle motor (drive by wire) controls

variable valve timing controls

assembly line diagnostic link (ALDL)

ignition systems and components, including:

spark plugs

ignition leads

ignition coils, including electromagnetic induction

ignition timing, including varying ignition timing according to engine load, speed and knock sensor input

dwell period

ECU control of ignition coil switching and methods of generating timing signals, including:

profile ignition pick-up (PIP) and crankshaft position sensor signals, including inductive pick-up, Hall effect and light emitting diode (LED)

waste spark ignition systems

coil-on-plug ignition systems

integrated ignition systems

diagnostic testing procedures for spark ignition engine management systems, including:

diagnostic flow charts

fuel system testing, including:

low pressure fuel system testing

high pressure fuel system testing

testing electrical systems, including procedures for:

accessing electrical terminals and using test probes without damaging connectors, fuse holders or wiring

injector testing

sensor testing

actuator testing

accessing and interpreting industry-relevant test equipment data, including:

fault codes

live data

freeze frame data

waveforms

repair or replacement procedures for spark ignition engine management systems, including procedures for:

removing and replacing the following electrical or electronic components:

sensors

actuators, including fuel injectors and fuel pumps

adjusting and recalibrating components and associated systems

post-repair testing procedures, including procedures for:

clearing fault codes

assessing engine performance

checking for electrical connector mating.

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 spark ignition engine management 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 specifications for spark ignition engine management systems

three different vehicles or machinery with spark ignition engine management system faults

diagnostic equipment for spark ignition engine management systems, including:

multimeter

scan tool

tools, equipment and materials appropriate for repairing spark ignition engine management systems.


Submission Requirements

List each assessment task's title, type (eg project, observation/demonstration, essay, assingnment, 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 spark ignition engine management 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 engine management system

2.1 Diagnostic tests are carried out according to workplace proceduresand safety requirements without causing damage to components or systems

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

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

3. Repair engine management 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 according to manufacturer specifications and workplace procedures

3.4 Repairs and component replacements and adjustments are carried out according to manufacturer specifications, workplace procedures and safety 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 machinery 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 and any faulty electrical equipment is identified, tagged 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:

using specialised tools and equipment

using appropriate personal protective equipment (PPE)

identifying hazards and controlling risks associated with:

working on vehicle high voltage ignition systems

wearing jewellery while working around high current wiring systems.

working with high pressure petrol fuel systems.

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

diagnose and repair a fault in the spark ignition engine management systems of three different vehicles or machinery, including:

faults in two system input sensors

faults in one system output actuator.

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 spark ignition engine management systems, including procedures for:

using specialised tools and equipment

using appropriate personal protective equipment (PPE)

identifying hazards and controlling risks associated with:

working on vehicle high voltage ignition systems

wearing jewellery while working around high current wiring systems

working with high pressure petrol fuel systems

operating principles of spark ignition engine management systems and associated components, including:

combustion, including:

air-fuel ratios and chemistry of combustion

composition of petrol fuel, including octane rating

indirect and direct fuel injection

application, purpose and operation of spark ignition engine management systems and components, including:

fuel system, including:

fuel filters

fuel pumps

fuel pressure regulators

fuel injectors

electronic control system, including the following system inputs:

throttle position sensors

coolant temperature sensors

oxygen sensors

load sensors and air flow meters

intake air temperature sensors

crankshaft position sensors

camshaft position sensors

battery voltage

accessory load sensors

knock sensors

key features of electronic control units (ECUs), including:

read-only memory (ROM)

programmable read-only memory (PROM)

electronically erasable programmable read-only memory (EEPROM)

random access memory (RAM)

multiplexing

adaptive learning

short-term fuel trim (STFT)

long-term fuel trim (LTFT)

sensor reference voltages and sensor grounds

system outputs, including:

injectors

idle speed control devices

fuel pump relays

engine cooling fans

air conditioning compressor controls

broadband intake manifolds

exhaust gas recirculation solenoid controls

carbon canister purge controls

throttle motor (drive by wire) controls

variable valve timing controls

assembly line diagnostic link (ALDL)

ignition systems and components, including:

spark plugs

ignition leads

ignition coils, including electromagnetic induction

ignition timing, including varying ignition timing according to engine load, speed and knock sensor input

dwell period

ECU control of ignition coil switching and methods of generating timing signals, including:

profile ignition pick-up (PIP) and crankshaft position sensor signals, including inductive pick-up, Hall effect and light emitting diode (LED)

waste spark ignition systems

coil-on-plug ignition systems

integrated ignition systems

diagnostic testing procedures for spark ignition engine management systems, including:

diagnostic flow charts

fuel system testing, including:

low pressure fuel system testing

high pressure fuel system testing

testing electrical systems, including procedures for:

accessing electrical terminals and using test probes without damaging connectors, fuse holders or wiring

injector testing

sensor testing

actuator testing

accessing and interpreting industry-relevant test equipment data, including:

fault codes

live data

freeze frame data

waveforms

repair or replacement procedures for spark ignition engine management systems, including procedures for:

removing and replacing the following electrical or electronic components:

sensors

actuators, including fuel injectors and fuel pumps

adjusting and recalibrating components and associated systems

post-repair testing procedures, including procedures for:

clearing fault codes

assessing engine performance

checking for electrical connector mating.

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 spark ignition engine management 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 specifications for spark ignition engine management systems

three different vehicles or machinery with spark ignition engine management system faults

diagnostic equipment for spark ignition engine management systems, including:

multimeter

scan tool

tools, equipment and materials appropriate for repairing spark ignition engine management systems.

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 workplace proceduresand safety requirements without causing damage to components or systems 
Faults are identified from diagnostic test results and causes of faults are determined 
Diagnosis findings and 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 according to manufacturer specifications and workplace procedures 
Repairs and component replacements and adjustments are carried out according to manufacturer specifications, workplace procedures and safety 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 machinery 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 checked and stored and any faulty electrical equipment is identified, tagged 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 workplace proceduresand safety requirements without causing damage to components or systems 
Faults are identified from diagnostic test results and causes of faults are determined 
Diagnosis findings and 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 according to manufacturer specifications and workplace procedures 
Repairs and component replacements and adjustments are carried out according to manufacturer specifications, workplace procedures and safety 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 machinery 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 checked and stored and any faulty electrical equipment is identified, tagged according to workplace procedures 
Workplace documentation is processed according to workplace procedures 

Forms

Assessment Cover Sheet

AURETR023 - Diagnose and repair spark ignition engine management 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

AURETR023 - Diagnose and repair spark ignition engine management 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: