Unit of competency Outline

Date retreived
22/07/2026 7:55 PM AWST

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Diagnose complex system faults

Diagnose complex system faults

Unit of competency
National Code
AURTTA121
State Code
OCJ03
TGA Status
Current
DTWD Status
Approved
Current Release Number
1.00
Current Release Date
13/11/2020
View on TGA
State Implementation and Classification
Approved Date
31/03/2021
Field of Education
030503 - Vehicle Mechanics
Original Release Date
31/03/2021
Nominal Hours
40
Description
This unit describes the skills and knowledge required to diagnose faults in complex vehicle, vessels or machinery systems to determine the repair action necessary to restore system performance. It involves confirming the existence of a complex system fault, developing a diagnostic testing strategy, diagnosing the cause of the fault reporting conclusions, and making repair recommendations. A complex system integrates two or more automotive systems, or incorporates three or more mechanical, hydraulic, pneumatic, electrical or electronic sub-systems. Examples include electronically controlled automatic transmissions, anti-lock braking systems, and engine management systems integrating ignition, fuel and transmission control systems.The unit applies to those who work in the automotive service and repair industry.No licensing, legislative, regulatory or certification requirements apply to this unit at the time of publication.
Notes
Elements and Performance Criteria
1. Identify and confirm the work requirement regarding complex system fault
  • 1.1 Identify job requirements from workplace instructions
  • 1.2 Confirm nature of fault according to workplace procedures
  • 1.3 Identify function and correct operation of system with fault
  • 1.4 Identify other systems affected by fault
2. Develop testing strategy
  • 2.1 Identify required information for diagnosis activity
  • 2.2 Analyse diagnostic options and develop testing strategy, including, diagnostic method sequence, tests and testing processes
  • 2.3 Identify tools and equipment required for testing strategy and establish serviceability according to workplace procedures
  • 2.4 Identify hazards and environmental issues associated with diagnosis activity, assess potential risks and implement control measures in line with workplace policies and procedures
3. Perform diagnosis
  • 3.1 Implement diagnostic tests set out in testing strategy according to manufacturer and workplace procedures, and workplace health and safety requirements
  • 3.2 Verify and report diagnostic findings using reliable alternative process according to manufacturer specifications and workplace procedures
  • 3.3 Develop and report recommendations for necessary repairs according to workplace procedures
  • 3.4 Communicate findings to workplace supervisor and customer and confirm next steps
4. Complete work processes
  • 4.1 Conduct final inspection according to workplace procedures and confirm vehicle is ready for repair process or return to customer
  • 4.2 Clear work area and dispose of or recycle materials according to workplace procedures
  • 4.3 Complete documentation according to workplace procedures.
No information
No information
Replaces
State Code National Code Title Type
AXA96 AURTTA021 Diagnose complex system faults Unit of competency