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Follow the links below to find material targeted to the unit's elements, performance criteria, required skills and knowledge

Elements and Performance Criteria

1. Prepare to diagnose and repair electrical 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
2. Diagnose electrical system
   • Diagnostic tests are carried out according to workplace procedures and 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
3. Repair electrical 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 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
4. Compete work processes
   • 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 and isolated according to workplace procedures
   • Workplace documentation is processed according to workplace procedures
5. Prepare to diagnose and repair electrical 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
6. Diagnose electrical system
   • Diagnostic tests are carried out according to workplace procedures and 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
7. Repair electrical 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 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
8. Compete work processes
   • 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 and isolated according to workplace procedures
   • Workplace documentation is processed according to workplace procedures

Range Statement

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 high voltage ignition systems wearing jewellery while working around high current wiring systems.

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Performance Evidence

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 three of the following electrical system single wire (non CAN-bus) circuits:

entry-exit locking systems with electric motor control circuit

power windows circuit

interior or exterior lighting circuit

turning indicator circuit

brake light circuit

hazard warning light circuit

electrical drive motor circuit

carry out four of the following electrical connector repairs to a vehicle or machinery wiring harness:

crimp two different terminal types and sizes

remove two faulty connectors from the back of different terminals

solder two different wire gauges to electrical terminals

apply heat shrink insulation to two different crimped or soldered joints

check terminal retention on two different female terminals and connectors.

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Knowledge Evidence

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 automotive electrical systems, including procedures for:

using specialised tools and equipment

using appropriate personal protective equipment (PPE)

identifying hazards and controlling risks associated with:

working on high voltage ignition systems

wearing jewellery while working around high current wiring systems

operating principles of automotive electrical systems and associated components, including:

current, voltage, resistance and power

series circuits

parallel circuits

series and parallel circuits

Ohm’s law

Faraday’s law

Kirchhoff's law

magnetism and direct current (DC) motor operation

electromagnetic interference and radiation

cable types and sizes and current carrying capacity

circuit protection devices

application, purpose and operation of automotive electrical systems and components, including:

wiper motors

electric windows

electric door locks

fan motors

horns

lighting

radio aerials

diagnostic testing procedures for automotive electrical systems, including:

visual, aural and functional assessments of electrical system components, including:

component damage and wear

component or connector corrosion

component water or moisture ingress

common faults in electrical circuits, including:

open circuits

high resistance circuits

short circuits

damaged insulation

frayed wires

burnt wiring

water and moisture ingress

connector damage

terminal damage

using diagnostic flow charts

testing electrical systems, including procedures for:

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

checking resistance, current flow and voltage drop of system circuits

procedures for using:

digital multimeters

test lights and probes

oscilloscopes

repair procedures for automotive electrical systems, including:

selecting and soldering wires

selecting and crimping terminals

removing and replacing connectors

removing and replacing electrical systems and their components

post-repair testing procedures for automotive electrical systems, including:

checking for electrical connector mating

checking circuit current flow

static and dynamic performance tests of automotive electrical systems.

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