Unit of competency Outline

Date retreived
22/07/2026 6:14 AM AWST

Whilst all efforts are made to provide accurate and timely information from the relevant source/documentation, please be aware that the information supplied may not be the most current version. The accuracy of the detail has not been confirmed by the Department and therefore should not be relied upon without first confirming the contents.

Carry out diagnosis of complex system faults

Carry out diagnosis of complex system faults

Unit of competency
National Code
AURTTA4021
State Code
WF388
TGA Status
Replaced
DTWD Status
Replaced
Current Release Number
1.00
Current Release Date
17/01/2013
State Implementation and Classification
Approved Date
25/02/2014
Field of Education
030503 - Vehicle Mechanics
Original Release Date
25/02/2014
Nominal Hours
40
Description
This unit covers the competence required to diagnose faults in systems integrating two or more automotive systems or incorporating three or more of mechanical, hydraulic, pneumatic, electrical or electronic media.Licensing, legislative, regulatory or certification requirements may apply to this unit in some jurisdictions. Users are advised to check with the relevant regulatory authority.
Notes
Elements and Performance Criteria
1. Prepare for diagnostic procedure
  • 1.1. Nature and scope of the work requirements are identified and confirmed.
  • 1.2. WHS requirements, including individual State/Territory regulatory requirements and personal protection needs are observed throughout the work.
  • 1.3. Technical and/or calibration requirements for testing and diagnosis are sourced and support equipment is identified and prepared.
2. Analyse reported faults
  • 2.1. Information is gathered from all sources to provide a full overview of all faults and conditions under which they occur.
  • 2.2. Function and operation of the system when operating correctly are identified.
  • 2.3. Systematic fault-finding processes are used across relevant systems to determine the extent of the fault.
  • 2.4. Additional technical sources are consulted to assist with analysis, if necessary.
  • 2.5. Actual faults are distinguished from perceived faults.
3. Identify causes of faults
  • 3.1. Diagnostic equipment and tests are selected to facilitate precise identification of faults and causes.
  • 3.2. Tests are applied systematically and efficiently to gather precise data on system operation.
  • 3.3. Appropriate use is made of technical information to compare gathered data with specifications.
  • 3.4. Test results and gathered data are compared to system specifications and normal functions, and discrepancies are identified.
  • 3.5. Source/cause of fault is isolated and confirmed.
4. Establish repair requirements
  • 4.1. Viability of repair or replacement is assessed.
  • 4.2. Appropriate repair procedures are identified and prescribed to meet customer service requirements.
  • 4.3. Repair requirements are clearly and legibly documented and/or communicated to appropriate persons.
  • 4.4. Repairs involving equipment/skills not held in the workshop are sourced from specialist workshops.
  • 4.5. Customer is informed of the diagnosis and repair requirements.
RANGE STATEMENT
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, if used 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.
Complex systems
A complex system is defined as one which integrates two or more automotive systems, or incorporates three or more of mechanical, hydraulic, pneumatic, electrical or electronic media. Examples include hydraulically/ electronically controlled automatic transmissions, anti-lock braking systems, engine management systems integrating ignition, fuel and transmission control systems.
Workplace example:
Customer reports intermittent shifting into top gear on an electronically controlled automatic transmission. The customer is asked a number of questions about the conditions in which the problem occurs (e.g. frequency of the problem, speed, road conditions). A road test is conducted, and the technician detects intermittent speedometer operation. After testing of electrical connections, components and sensors, the intermittent speedometer operation is confirmed to be the problem. Repair requirements are determined to be securing the connections on the speedometer wiring.
Diagnostic methods
Diagnostic methods are to include:
questioning of customer
road testing
hydraulic testing (e.g. performance testing of power steering systems)
electrical testing (e.g. performance testing of engine starting systems)
electronic testing (e.g. electronic interface diagnostic equipment)
mechanical testing (e.g. compression testing on engines)
chemical testing (e.g. testing of cooling systems)
technical/service manuals
component/equipment service history
body measurements
WHS
WHS requirements are to be in accordance with legislation/regulations/codes of practice and enterprise safety policies and procedures. This may include protective clothing and equipment, use of tooling and equipment, workplace environment and safety, handling of materials, use of fire fighting equipment, enterprise first aid, hazard control and hazardous materials and substances
Personal protective equipment
Personal protective equipment is to include that prescribed under legislation/regulations/codes of practice and workplace policies and practices
Safe operating procedures
Safe operating procedures are to include, but are not limited to the conduct of operational risk assessment and treatments associated with vehicular movement, toxic substances, electrical safety, machinery movement and operation, manual and mechanical lifting and shifting, working in proximity to others and site visitors
Emergency procedures
Emergency procedures related to this unit are to include, but are not limited to emergency shutdown and stopping of equipment, extinguishing fires, enterprise first aid requirements and site evacuation
Environmental requirements
Environmental requirements are to include but are not limited to waste management, noise, dust and clean-up management
Quality requirements
Quality requirements are to include, but are not limited to regulations, including Australian Standards, internal company quality policy and standards and enterprise operations and procedures
Statutory/regulatory authorities
Statutory/regulatory authorities may include Federal, State/Territory and local authorities administering acts, regulations and codes of practice
Tooling and equipment
Tooling and equipment may include testing equipment, meters, CRO, code readers, gauges, measuring equipment, gas analysers and sensors
Materials
Materials may include cleaning materials.
Communications
Communications are to include, but are not limited to verbal and visual instructions and fault reporting and may include site specific instructions, written instructions, plans or instructions related to job/task, telephones and pagers
Information/documents
Sources of information/documents may include:
verbal or written and graphical instructions, signage, work schedules/plans/specifications, work bulletins, memos, material safety data sheets, diagrams or sketches
safe work procedures related to diagnosis of complex system faults
regulatory/legislative requirements pertaining to the automotive industry, including Australian design rules
engineer's design specifications and instructions
organisation work specifications and requirements
instructions issued by authorised enterprise or external persons
Australian standards
EVIDENCE GUIDE
The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, 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
It is essential that competence in this unit signifies ability to transfer competence to changing circumstances and to respond to unusual circumstances in the critical aspects of:
observing safety procedures and requirements
communicating effectively with others involved in or affected by the work
selecting methods and techniques appropriate to the circumstances
completing preparatory activity in a systematic manner
analysing faults in complex systems, identifying the cause(s) of faults and establishing repair requirements within an established timeframe for faults incorporating at least three of the following single systems: mechanical, hydraulic, pneumatic and electrical/electronic.
Context of, and specific resources for assessment
Application of competence is to be assessed in the workplace or simulated worksite.
Assessment is to occur using standard and authorised work practices, safety requirements and environmental constraints.
Assessment is to comply with regulatory requirements, including Australian Standards.
The following resources should be made available:
workplace location or simulated workplace
materials relevant to the diagnosis of complex system faults
equipment, hand and power tooling appropriate to the diagnosis of complex system faults
activities covering the mandatory task requirements
specifications and work instructions.
Method of assessment
Assessment must satisfy the endorsed assessment guidelines of the automotive industry's RS&R Training Package.
Assessment methods must confirm consistency and accuracy of performance together with application of underpinning knowledge.
Assessment must be by direct observation of tasks, with questioning on underpinning knowledge and it must also reinforce the integration of key competencies.
Assessment may be applied under project related conditions (real or simulated) and require evidence of process.
Assessment must confirm a reasonable inference that competence is able not only to be satisfied under the particular circumstance, but is able to be transferred to other circumstances.
It is preferable assessment reflects a process rather than an event and occurs over a period of time to cover the varying quality circumstances. Evidence of performance may be provided by customers, team leaders/members or other appropriate persons subject to agreed authentication arrangements.
Competence in this unit may be assessed in conjunction with other functional units which together form part of the holistic work role
Guidance information for assessment
Replaces
State Code National Code Title Type
W5103 AURT466208A Carry out diagnosis of complex system faults Unit of competency
Replaced By
State Code National Code Title Type
AXA96 AURTTA021 Diagnose complex system faults Unit of competency