Unit of competency Outline

Date retreived
22/07/2026 5:42 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.

Deactivate and reinitialise power supply in hybrid electric vehicles

Deactivate and reinitialise power supply in hybrid electric vehicles

Unit of competency
National Code
AURETH4011
State Code
WC281
TGA Status
Replaced
DTWD Status
Replaced
Current Release Number
2.00
Current Release Date
17/01/2013
State Implementation and Classification
Approved Date
17/07/2013
Field of Education
030505 - Automotive Electrics And Electronics
Original Release Date
17/07/2013
Nominal Hours
20
Description
This unit describes the performance outcomes required to isolate the low voltage (LV) and high voltage (HV) electrical power supply of hybrid electric vehicles (HEVs). It involves calibrating systems that require re-setting once the power supply and system are re-energised.Importance is placed on the application of HV 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. Procedures and information relevant to the task are sourced and work requirements confirmed
  • 1.2. Workplace health and safety (WHS) requirements and appropriate precautions are identified and applied
  • 1.3. Methods for the specific work requirement are selected and prepared for
  • 1.4. Tools and testing equipment necessary to conduct the work are assembled
  • 1.5. Technical and/or calibration requirements for deactivating and reinitialising the power supply are established
2. Deactivate power supply
  • 2.1. Information relevant for deactivation is followed
  • 2.2. Procedure to deactivate vehicle at main control is followed to commence deactivation process
  • 2.3. HV power supply connection is located and isolated according to manufacturer instructions, taking appropriate precautions to prevent electric shock to self and others
  • 2.4. LV power supply is located and disconnected according to manufacturer instructions and vehicle and workplace safety procedures
  • 2.5. Vehicle is stabilised and checked for residual voltage in system
  • 2.6. HV power supply connection is secured and retained to prevent re-fit by third party
  • 2.7. Vehicle is identified with warning tags or sign to indicate potential hazards
3. Reinitialise power supply
  • 3.1. Information for reinitialising procedure is accessed and followed
  • 3.2. LV and HV power supplies are reconnected and activated
  • 3.3. Technical and/or calibration requirements are established for reinitialising the power supply
  • 3.4. Diagnostic and testing equipment is used to check and recalibrate sub-systems affected by deactivation process
  • 3.5. Main power supply and sub-systems are checked for correct operation upon reactivation
  • 3.6. Workplace requirements are followed to report and record subsequent faults with the reinitialising process
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, 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.
Procedures and information may include:
Australian standards
diagrams and sketches
engineer design specifications and instructions
industry codes of practice
original equipment manufacturer (OEM) specifications
verbal, written and graphical instructions issued by authorised internal and external persons
workplace specifications and requirements.
WHS requirements may include:
eliminating 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 or signs
isolating the LV and HV battery electrical supply
stabilising the vehicle electrical circuits
using PPE, such as:
electrical safety gloves 1000V
HV insulating mats (Australian standards rated).
Testing equipment may include:
AC/DC current clamp
battery management system (BMS) diagnostic equipment
diagnostic scanner or computer interface device
insulated hand tools
multimeter CAT 3 1000V
oscilloscope
thermal imaging equipment or non-contact thermometer.
Sub-systems may include:
air conditioning control system
anti-lock braking system (ABS) and traction control system (TCS)
automatic power windows
automatic transmission
auxiliary cooling system for the internal combustion engine (ICE) and HV system
driver information warning display
electric power steering (EPS)
electronic brake control system
electronic stability control
headlight aiming control system
ICE control management system
multi-function display units, including sat-nav systems
tyre pressure warning system (TPWS).
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 components and system is maintained when performing tests
check that the deactivation and reinitialisation process is followed and applied according to manufacturer specifications
complete relevant documentation for diagnosed faults encountered when deactivating and reinitialising the HEV power supply.
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 an HEV that uses HV and LV AC/DC electrical systems. Where simulation is used, an operational HEV must be included in the simulation.
The following resources must be made available for the assessment of this unit:
appropriate PPE
an HEV
manufacturer specifications for the HEV
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 a 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.
Replaced By
State Code National Code Title Type
AXE11 AURETH011 Depower and reinitialise hybrid electric vehicles Unit of competency