MEM27023 — Diagnose and rectify fieldbus circuits in mobile and stationary plant and equipment

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What an assessment for MEM27023 must cover

45 assessable components: 4 elements (15 performance criteria), 12 performance evidence and 18 knowledge evidence requirements. An audit-defensible tool maps every question and task back to these — that mapping is the coverage matrix Auditori generates alongside the assessment.

Elements & performance criteria

1 Determine job requirements

1.1Follow standard operating procedures (SOPs)
1.2Comply with work health and safety (WHS) requirements at all times
1.3Use appropriate personal protective equipment (PPE) in accordance with SOPs
1.4Identify job requirements from specifications, drawings, job sheets or work instructions

2 Identify bus and control system components and location

2.1Examine appropriate drawings, specifications and manuals for bus and control system information
2.2Perform a visual inspection of equipment and identify location and any obvious faults in bus and control system wiring and components

3 Check bus and control system wiring and rectify faults

3.1Ensure battery is charged and charging system is operating correctly
3.2Test voltage supply, input voltage and ground

4 Assess and rectify wiring faults

4.1Isolate wiring and sensor faults
4.2Determine replacement sensors and cables/wires, including size and insulation quality
4.3Make up wiring looms for application and securely fix
4.4Strip, fit, prepare and terminate wiring and cables
4.5Test terminated cables for continuity and to comply with requirements
4.6Remove corrosion, neutralise and apply appropriate protective coating
4.7Test sensors, relays, solenoids, contacts and circuits and repair/replace

Performance evidence

following work instructions, standard operating procedures (SOPs) and safe work practices
identifying and interpreting specifications, standards, charts, lists, SOPs, electrical drawings and diagrams to diagnose and rectify fieldbus circuits in mobile and stationary plant and equipment
selecting and using the correct test instrument, including multimeters, amp meters and circuit testers for bus and control system circuits and components
assessing condition and serviceability of components, including connectors, resistors, harnesses, boards, sensors, switches, fuses and seals
applying Ohm’s Law to determine the required values of current, voltage and resistance of a range of electrical circuits, including series, parallel and series parallel
connecting electrical test instruments into given circuits to determine the required values of current, voltage and resistance in a safe and effective manner
connecting and adjusting multi-channel and general purpose oscilloscopes to a given electrical circuit to measure wave forms at nominated points in the circuit
fault finding using fault-finding techniques to identify wiring faults in electrical circuits
selecting appropriate replacement cables according to size, rating and insulation resistance from supplier catalogues
making up replacement wiring looms, strip and prepare cable ends for termination and terminate to specifications
testing terminations for continuity and to comply with requirements
removing and/or neutralising corrosion from terminals and connections and applying appropriate protective coating

Knowledge evidence

safe work practices and procedures and use of personal protective equipment (PPE)
principles of electron theory
definitions of current, voltage and resistance in terms of electrical circuits
Ohm’s Law and the relationships between current, voltage and resistance for a variety of given electrical circuits
instruments and procedures to be used to measure current, voltage and resistance and safety precautions to be taken
procedures for maintaining electrical test equipment
principles and functions of two wire differential serial bus systems, including: communication and power cables for bus systems, voltage states relative to shield or ground and role in information transfer, logic states, channels, communication protocols, including message priority and identification, electronic control modules (ECMs), engine control modules, power distribution boards, ground modules, typical diagnostic codes and faults, cabin displays
symbols used in electrical drawings/diagrams
components of a variety of electrical circuits identified by given electrical drawings/diagrams
differences between series and parallel electrical circuits
function of a general purpose and multi-channel oscilloscopes and procedures for connecting oscilloscopes to bus and control system circuits and components
use of wave forms in the testing of circuits
accuracy to which electrical test equipment can be read
examples and causes of common faults in electrical wiring and test procedures for isolating wiring faults
specifications of cables and wires including insulation resistance used in given electrical circuits
test procedures for terminated wiring and cables
effect of corrosion on the performance of electrical circuits and connections
common faults and causes in sensors, relays, solenoids, contacts and circuits and procedures for testing circuit components

Unit content sourced from training.gov.au — © Commonwealth of Australia, licensed under CC BY 4.0. Auditori is not affiliated with the Department of Employment and Workplace Relations.

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Questions about assessing MEM27023

What does an assessment tool for MEM27023 need to cover?

To satisfy the Principles of Assessment and Rules of Evidence, an assessment for MEM27023 needs to address all 45 unit components: 4 elements with 15 performance criteria, 12 performance evidence requirements, 18 knowledge evidence requirements, and the foundation skills. A coverage matrix mapping each question and task to these components is what an auditor looks for.

How does Auditori generate an assessment tool for MEM27023?

Auditori pulls the current release of MEM27023 from training.gov.au and generates a complete package: candidate assessment, assessor guide with model answers and observation criteria, and a coverage matrix mapping every component. A suitably qualified person then reviews and approves the draft in a built-in workflow — consistent with ASQA's guidance on AI use in VET — before export as branded PDF and editable Word.

Is the first assessment tool really free?

Yes. Every new account includes one free credit — enough to generate the complete assessment tool for MEM27023 — with no card and no subscription required. After that it's pay-as-you-go per unit.

Can I check my existing MEM27023 assessment instead of generating a new one?

Yes — upload your existing assessment or learner guide and Auditori maps it against every element, performance criterion, PE and KE of MEM27023, showing exactly what's covered and what's missing. Mapping costs a quarter of a credit.

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