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Evidence Guide: AURETH4009 - Diagnose and repair DC to DC converters in battery electric vehicles

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

AURETH4009 - Diagnose and repair DC to DC converters in battery electric vehicles

What evidence can you provide to prove your understanding of each of the following citeria?

Prepare for repair operations

  1. Procedures and information relevant to the task are sourced and work requirements confirmed
  2. Workplace health and safety (WHS) requirements and appropriate precautions are identified and applied
  3. Repair methods for the specific work requirement are selected and prepared for
  4. Tools and testing equipment necessary to conduct the work are assembled
  5. Technical and/or calibration requirements for diagnosis and repair of the DC to DC converter are established
Procedures and information relevant to the task are sourced and work requirements confirmed

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Workplace health and safety (WHS) requirements and appropriate precautions are identified and applied

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Repair methods for the specific work requirement are selected and prepared for

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Tools and testing equipment necessary to conduct the work are assembled

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Technical and/or calibration requirements for diagnosis and repair of the DC to DC converter are established

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Perform diagnosis

  1. Tests and checks on DC to DC converter input and output voltage and current are carried out using manufacturer specifications and test procedures
  2. Relevant applications and accessories are tested and checked for correct operation
  3. Test results are recorded
Tests and checks on DC to DC converter input and output voltage and current are carried out using manufacturer specifications and test procedures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Relevant applications and accessories are tested and checked for correct operation

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Test results are recorded

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Repair DC to DC converter

  1. Test results are compared with manufacturer specifications to decide on corrective action
  2. Components are removed and repaired or replaced as required
  3. Replaced or repaired components are re-tested for correct operation
  4. Replacement, repair or adjustment procedures are recorded on job card or repair order
Test results are compared with manufacturer specifications to decide on corrective action

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Components are removed and repaired or replaced as required

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Replaced or repaired components are re-tested for correct operation

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Replacement, repair or adjustment procedures are recorded on job card or repair order

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Complete repair operations

  1. Work area is tidied, and tools and equipment replaced according to workplace requirements
  2. Job card or repair order is completed according to workplace requirements
  3. Client report is prepared on the outcomes of the diagnosis and repair according to workplace requirements
  4. Vehicle is prepared for return to the client
Work area is tidied, and tools and equipment replaced according to workplace requirements

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Job card or repair order is completed according to workplace requirements

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Client report is prepared on the outcomes of the diagnosis and repair according to workplace requirements

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Vehicle is prepared for return to the client

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

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 the DC to DC converter is maintained when performing tests

diagnose the operation of the DC to DC converter against manufacturer specifications

remove and replace or repair the DC to DC converter

complete relevant documentation for the diagnosis and repair of the DC to DC converter.

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 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.

Required Skills and Knowledge

Required skills

technical skills to:

use workplace technology relating to the diagnosis and repair of BEV DC to DC converters

use specialist tools and equipment

use computerised measuring equipment

report and record actions

communication skills to:

confirm work requirements and specifications

communicate effectively regarding work requirements with supervisor, other workers and customers

report work outcomes and problems

literacy skills to interpret technical information and specifications

numeracy skills to accurately complete tests and measurements to determine correct operation

problem-solving skills to:

interpret test results

identify repair options

self-management skills to:

manage risks and hazards associated with the diagnosis and repair of BEV DC to DC converters

optimise workflow and productivity

Required knowledge

components of HV BEVs and their functions

WHS requirements relating to:

safe work practices

electrical safety

principles of electricity, including AC and DC

principles of operation of a DC to DC converter

applicable commonwealth, state or territory legislation, regulations, standards and codes of practice and environmental regulations relating to the diagnosis and repair of a BEV DC to DC converter

vehicle-specific electrical requirements

workplace policies and procedures, including quality, recording and reporting procedures relating to the diagnosis and repair of a BEV DC to DC converter

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 or manufacturer design specifications and instructions

industry codes of practice

material safety data sheets (MSDS)

parts catalogues

verbal, written and graphical instructions issued by authorised internal and external persons

workplace specifications and requirements.

WHS requirements may include:

eliminating hazardous materials and substances

first aid equipment

following emergency procedures

hazard and risk control

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

checking for residual voltage

depowering the vehicle

isolating the HV battery electrical supply

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

multimeter CAT 3 1000V

oscilloscope

thermal imaging equipment or non-contact thermometer.

Tests and checks may include:

testing accessories and applications operating on LV DC

testing input and output voltage and current.

Applications and accessories may include:

electric power steering (EPS)

electric vacuum pump

electric coolant pumps in:

heating, ventilation and air conditioning (HVAC) system

powertrain cooling system

battery pack cooling system

horn

wipers

radio

lights

indicators.

Corrective action may include:

removing and replacing converter

replacing fuses.

Workplace requirements may include:

manufacturer specifications and industry codes of practice

quality policies and procedures

safe work procedures

sustainability, environment, equal opportunity and anti-discrimination policies and procedures

workplace recording and reporting procedures.