Unit of Competency Mapping – Information for Teachers/Assessors – Information for Learners

MEM27006 Mapping and Delivery Guide
Diagnose and rectify batteries, low voltage sensors and circuits

Version 1.0
Issue Date: May 2024


Qualification -
Unit of Competency MEM27006 - Diagnose and rectify batteries, low voltage sensors and circuits
Description
Employability Skills
Learning Outcomes and Application This unit of competency defines the skills and knowledge required to use test instruments, test the battery, assess and rectify wiring faults.It applies to testing and rectification activities associated with 12, 24 36 and 48 volt wiring systems on vehicles, mobile plant and stationary equipment.Where soldering of wires/connections is required unit MEM05001 Perform manual soldering/desoldering - electrical/electronic components should also be selected.Where an electrical wiring system is above 48 volts unit MEM18045 Fault find and repair electrical equipment/components up to 250 volts single phase supply or unit MEM18046 Fault find and repair electrical equipment/components up to 1000 volts a.c./1500 volts d.c. should also be selected as appropriate.No licensing, legislative or certification requirements apply to this unit at the time of publication.Band: AUnit Weight: 8
Duration and Setting X weeks, nominally xx hours, delivered in a classroom/online/blended learning setting.
Prerequisites/co-requisites
Competency Field Fixed and mobile plant
Development and validation strategy and guide for assessors and learners Student Learning Resources Handouts
Activities 		Slides
PPT 		Assessment 1 Assessment 2 Assessment 3 Assessment 4
Elements of Competency Performance Criteria              
Element: Use test instruments
  • Apply principles of electron theory, current, voltage and resistance to diagnose and rectify low voltage electrical systems
  • Select, use and maintain appropriate test instruments to determine current, voltage and resistance
  • Interpret electrical drawings and manufacturer diagrams
  • Determine series, parallel and series parallel circuits
  • Interpret and apply basic electrical laws
  • Connect amps voltage and resistance (AVR) test instruments into circuits to measure current, voltage and resistance
  • Read meters to standard accuracy
  • Use and apply multipliers and shunts
       
Element: Test battery
  • Interpret and apply chemical battery operating principles when testing batteries
  • Determine electrolyte level and record specific gravity readings temperature
  • Carry out dry charge preparation and recharging of batteries
  • Perform discharge testing according to prescribed procedures
  • Select replacement batteries for application
       
Element: Determine job requirements
  • Follow standard operating procedures (SOPs)
       
Element: Comply with work health and safety (WHS) requirements at all times
       
Element: Use appropriate personal protective equipment (PPE) in accordance with SOPs
       
Element: Identify job requirements from specifications, drawings, job sheets or work instructions
  • Apply principles of electron theory, current, voltage and resistance to diagnose and rectify low voltage electrical systems
       
Element: Select, use and maintain appropriate test instruments to determine current, voltage and resistance
       
Element: Interpret electrical drawings and manufacturer diagrams
       
Element: Determine series, parallel and series parallel circuits
       
Element: Interpret and apply basic electrical laws
       
Element: Connect amps voltage and resistance (AVR) test instruments into circuits to measure current, voltage and resistance
       
Element: Read meters to standard accuracy
       
Element: Use and apply multipliers and shunts
  • Interpret and apply chemical battery operating principles when testing batteries
       
Element: Determine electrolyte level and record specific gravity readings temperature
       
Element: Carry out dry charge preparation and recharging of batteries
       
Element: Perform discharge testing according to prescribed procedures
       
Element: Select replacement batteries for application
       
Element: Assess and rectify wiring faults
  • Isolate wiring and sensor fault
       
Element: Determine replacement sensors and cables/wires, including size and insulation quality
       
Element: Make up wiring looms for application and securely fix
       
Element: Strip, fit, prepare and terminate wiring and cables
       
Element: Test terminated cables for continuity and to comply with requirements
       
Element: Remove corrosion, neutralise and apply appropriate protective coating
       
Element: Test sensors, relays, solenoids, contacts and circuits and repair/replace
       

Submission Requirements

List each assessment task's title, type (eg project, observation/demonstration, essay, assignment, checklist) and due date here

Assessment task 1: [title]      Due date:

(add new lines for each of the assessment tasks)

Assessment Tasks

Copy and paste from the following data to produce each assessment task. Write these in plain English and spell out how, when and where the task is to be carried out, under what conditions, and what resources are needed. Include guidelines about how well the candidate has to perform a task for it to be judged satisfactory.

This field allows for different work environments and conditions that may affect performance. Essential operating conditions that may be present (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) are included.

Circuits include one (1) or more or the following for:

door and other access locks

interior and exterior lighting

seat adjustment

power windows

turning and other indicators

low voltage electric motors

hazard and brake lights

sensors

Test instruments include the following:

multimeters

amp meters

circuit testers

Wiring systems include the following:

wiring

switching mechanisms

circuit protection devices

Copy and paste from the following performance criteria to create an observation checklist for each task. When you have finished writing your assessment tool every one of these must have been addressed, preferably several times in a variety of contexts. To ensure this occurs download the assessment matrix for the unit; enter each assessment task as a column header and place check marks against each performance criteria that task addresses.

Observation Checklist

Tasks to be observed according to workplace/college/TAFE policy and procedures, relevant legislation and Codes of Practice Yes No Comments/feedback
Apply principles of electron theory, current, voltage and resistance to diagnose and rectify low voltage electrical systems 
Select, use and maintain appropriate test instruments to determine current, voltage and resistance 
Interpret electrical drawings and manufacturer diagrams 
Determine series, parallel and series parallel circuits 
Interpret and apply basic electrical laws 
Connect amps voltage and resistance (AVR) test instruments into circuits to measure current, voltage and resistance 
Read meters to standard accuracy 
Use and apply multipliers and shunts 
Interpret and apply chemical battery operating principles when testing batteries 
Determine electrolyte level and record specific gravity readings temperature 
Carry out dry charge preparation and recharging of batteries 
Perform discharge testing according to prescribed procedures 
Select replacement batteries for application 
Follow standard operating procedures (SOPs) 
 
 
Apply principles of electron theory, current, voltage and resistance to diagnose and rectify low voltage electrical systems 
 
 
 
 
 
 
Interpret and apply chemical battery operating principles when testing batteries 
 
 
 
 
Isolate wiring and sensor fault 
 
 
 
 
 
 

Forms

Assessment Cover Sheet

MEM27006 - Diagnose and rectify batteries, low voltage sensors and circuits
Assessment task 1: [title]

Student name:

Student ID:

I declare that the assessment tasks submitted for this unit are my own work.

Student signature:

Result: Competent Not yet competent

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Assessment Record Sheet

MEM27006 - Diagnose and rectify batteries, low voltage sensors and circuits

Student name:

Student ID:

Assessment task 1: [title] Result: Competent Not yet competent

(add lines for each task)

Feedback to student:

 

 

 

 

 

 

 

 

Overall assessment result: Competent Not yet competent

Assessor name:

Signature:

Date:

Student signature:

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