Unit of competency Outline

Date retreived
22/07/2026 8:03 PM AWST

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Diagnose and repair DC to DC converters in battery electric vehicles

Diagnose and repair DC to DC converters in battery electric vehicles

Unit of competency
National Code
AURETH009
State Code
AXE09
TGA Status
Replaced
DTWD Status
Transition (Replaced)
Current Release Number
1.00
Current Release Date
14/04/2016
View on TGA
State Implementation and Classification
Approved Date
13/07/2016
Field of Education
030505 - Automotive Electrics And Electronics
Original Release Date
13/07/2016
Nominal Hours
40
Description
This unit describes the performance outcomes required to diagnose and repair faults in high voltage (HV) direct current (DC) to low voltage (LV) DC converters in battery electric vehicles (BEVs). It involves preparing for the task, selecting the correct diagnostic procedure, carrying out the diagnosis and the repair, performing post-repair testing, and completing workplace processes and documentation. Importance is placed in the unit on applying electrical safety procedures when working on HV rechargeable energy storage systems (RESS).It applies to those working in the automotive service and repair industry. HV DC to LV DC converters include circuits in BEVs.No licensing, legislative, regulatory or certification requirements apply to this unit at the time of publication.
Notes
Elements and Performance Criteria
1. Prepare to diagnose and repair DC to DC converter
  • 1.2 Job requirements are determined from workplace instructions
  • 1.3 Diagnostic information is sourced and interpreted
  • 1.4 Diagnostic options are analysed and those most appropriate to the circumstances are selected
  • 1.5 Hazards associated with the work are identified and risks are managed according to safety requirements and AS 5732 Electric vehicle operations: Maintenance and repair
  • 1.6 Diagnostic tools and equipment are selected and checked for serviceability
2. Diagnose DC to DC converter
  • 2.1 Diagnostic tests are carried out according to manufacturer specifications, workplace procedures and safety requirements
  • 2.2 Faults are identified from diagnostic test results and causes of faults are determined
  • 2.3 Diagnosis findings and recommendations for necessary repairs or adjustments are reported according to workplace procedures
3. Repair DC to DC converter
  • 3.1 Repair information is sourced and interpreted
  • 3.2 Repair options are analysed and those most appropriate to the circumstances are selected
  • 3.3 Repair tools, equipment and materials are selected and checked
  • 3.4 RESS service plug or manual service disconnect is located and isolated to depower vehicle HV RESS according to manufacturer specifications
  • 3.5 DC to DC converters are replaced, repaired or adjusted as required according to manufacturer specifications, workplace procedures, safety and environmental requirements, and without causing damage to components or systems
  • 3.6 RESS service plug or manual service disconnect is reconnected and vehicle is reactivated
  • 3.7 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. Complete work processes
  • 4.1 Final inspection is made to ensure work is to workplace expectations and vehicle is presented ready for use
  • 4.2 Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected
  • 4.3 Tools and equipment are checked and stored and faulty electric equipment is identified, tagged and isolated according to workplace procedures
  • 4.4 Workplace documentation is processed according to workplace procedures
No information
No information
Replaces
State Code National Code Title Type
WC279 AURETH4009 Diagnose and repair DC to DC converters in battery electric vehicles Unit of competency
Replaced By
State Code National Code Title Type
OCJ36 AURETH109 Diagnose and repair DC to DC converters in battery electric vehicles Unit of competency