Unit of competency Outline

Date retreived
22/07/2026 8:26 PM 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.

Test and repair high voltage battery systems in battery electric vehicles

Test and repair high voltage battery systems in battery electric vehicles

Unit of competency
National Code
AURETH4003
State Code
WC273
TGA Status
Replaced
DTWD Status
Replaced
Current Release Number
2.00
Current Release Date
17/01/2013
State Implementation and Classification
Approved Date
07/08/2013
Field of Education
030505 - Automotive Electrics And Electronics
Original Release Date
07/08/2013
Nominal Hours
30
Description
This unit describes the performance outcomes required to test and repair high voltage (HV) battery systems in battery electric vehicles (BEVs). It involves working with HV and low voltage (LV) alternating current (AC) and direct current (DC) automotive battery systems and electrical components. Importance is placed on the application of HV electrical safety procedures.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 repair operations
  • 1.1. HV batteryrepair information is accessed
  • 1.2. Workplace health and safety (WHS) requirements and appropriate precautions are identified and applied
  • 1.3. Repair method most appropriate for the specific circumstances is selected and prepared for
  • 1.4. Tools andtesting equipment necessary to conduct the work are assembled
  • 1.5. Technical and/or calibration requirements for repair of the HV battery system are established
2. Test battery system
  • 2.1. HV battery systems is tested for electrical efficiency using manufacturer specifications and test procedures
  • 2.2. Diagnostic equipment is used to retrieve system parameters and information
  • 2.3. Faults with the battery system are identified
  • 2.4. Test results are recorded
3. Repair battery system
  • 3.1. Test results are compared with equipment specifications to decide on appropriate corrective action
  • 3.2. HV battery system components are replaced, repaired or adjusted as required
  • 3.3. Repaired HV battery systems are re-tested for correct operation
  • 3.4. Replacement, repair or adjustment procedures are recorded
4. Complete repair operations
  • 4.1. Work area is tidied, and tools and equipment are replaced according toworkplace requirements
  • 4.2. Job card or repair order is completed according to workplace requirements
  • 4.3. Client report is prepared on the outcomes of the repair of the HV battery system, according to workplace requirements
  • 4.4. Vehicle is prepared for return to the client
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.
Repair information may include:
Australian standards
diagrams and sketches
engineer or manufacturer design specifications and instructions
industry codes of practice
parts catalogues
verbal, written and graphical instructions issued by authorised internal and external persons
workplace specifications and requirements.
WHS requirements may include:
elimination of hazardous materials and substances
first aid equipment
following emergency procedures
hazard and risk control
material safety data sheets (MSDS)
personal protective equipment (PPE) and clothing
safety equipment
techniques for manual handling, including shifting, lifting and carrying.
Appropriate precautions may include:
analysing task to define risk
applying electrical safety precautions, such as:
“one hand rule”
live system warning tags and signs
isolating the HV battery supply
depowering the vehicle
using PPE, such as:
electrical safety gloves 1000V
HV insulating mats (Australian standards rated).
Testing equipment may include:
AC/DC current clamp
BMS diagnostic equipment
diagnostic scanner
insulation or mega ohm tester
multimeter CAT 3 1000V
oscilloscope
thermal imaging equipment or non-contact thermometer.
Electrical efficiency relates to:
charging
discharge rate
holding capacity
temperature
voltage.
Test procedures may include:
battery charging interlock
battery cooling system
BMS
HV contactors
HV current leakage to vehicle chassis
HV fuse
inertia safety cut-out switch
isolation/cut-off emergency device
leakage of electrolyte
loose cable connections
mounting of batteries
on-board battery charging system
PDU.
Appropriate corrective action may include:
balancing state of charge
replacing cable connection
replacing system component
replacing the battery
tightening connection.
Workplace requirements may include:
industry codes of practice
manufacturer specifications
quality policies and procedures
safe work procedures
sustainability, environment, equal opportunity and anti-discrimination policies and procedures
workplace recording and reporting procedures.
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
The evidence required to demonstrate competency in this unit must be relevant to workplace operations and satisfy all of the requirements of the performance criteria and required skills and knowledge.
A person who demonstrates competency in this unit must be able to:
comply with WHS requirements and safe work practices
ensure electrical and mechanical integrity of any component or system is maintained when performing tests
check HV battery system performance against manufacturer’s specifications
replace, repair and adjust HV battery system components as required to correct deficiencies
complete relevant documentation for the repair of the HV battery system.
Context of, and specific resources for assessment
Competency is to be assessed in the workplace or a simulated workplace environment that accurately reflects performance in a real workplace setting.
Assessment is to occur:
using standard workplace practices and procedures
following safety requirements
applying environmental constraints.
Assessment is to comply with relevant:
regulatory requirements
Australian standards
industry codes of practice.
Competency is to be assessed using a BEV that uses HV and LV AC/DC electrical systems. Where simulation is used, an operational BEV must be included in the simulation.
The following resources must be made available for the assessment of this unit:
appropriate PPE
a BEV
manufacturer specifications for the BEV
testing equipment
full range of essential tools and equipment
workplace documentation.
Method of assessment
Assessment must satisfy the endorsed Assessment Guidelines of this Training Package.
Assessment methods must confirm consistency and accuracy of performance (over time and in a range of workplace relevant contexts) together with the application of required skills and knowledge.
Assessment methods must be by direct observation of tasks and include questioning on required skills and knowledge to ensure correct interpretation and application.
Competence in this unit may be assessed in conjunction with other units which together form part of an holistic work role.
Where applicable, reasonable adjustment must be made to work environments and training situations to accommodate the needs of diverse clients.
Assessment processes and techniques must be culturally sensitive and appropriate to the language, literacy and numeracy capacity of the candidate and the work being performed.