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Elements and Performance Criteria

  1. Identify relevant information of electrical circuit and wiring system construction and operation in work activities
  2. Apply relevant information of electrical circuit and wiring system construction and operation in work activities
  3. Evaluate knowledge of electrical circuit and wiring systems
  4. Identify relevant information of electrical circuit and wiring system construction and operation in work activities
  5. Apply relevant information of electrical circuit and wiring system construction and operation in work activities
  6. Evaluate knowledge of electrical circuit and wiring systems

Range Statement

This section specifies 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. Bold italicised wording, if used in the performance criteria, is detailed below.

Basic electrical principles must include:

relationship between electrical current flow, pressure, resistance and power using Ohm’s law.

Basic testing procedures must include:

voltage drop

circuit resistance

circuit current flow.


Performance Evidence

Before competency can be determined, individuals must demonstrate they can perform the following according to the standard defined in the unit’s elements and performance criteria, range of conditions and foundation skills:

apply knowledge of automotive electrical circuits and wiring systems during the testing and repair of the electrical systems of three different vehicles, vessels or machinery

evaluate and expand knowledge of automotive electrical circuits and wiring systems, including demonstrating knowledge of one of the following:

a new automotive electrical or electronic testing procedure

a new automotive electrical or electronic repair procedure

a new item of automotive electrical or electronic technology.


Knowledge Evidence

Individuals must be able to demonstrate knowledge of:

types and location of sources of technical information relating to automotive electrical systems, including:

workplace service information

automotive engine mechanical texts

vehicle workshop manuals

service bulletins

technical articles

automotive textbooks

features of vehicle electrical circuits, including:

voltage source

current load devices

resistive devices

circuit protection devices

switching circuit devices

series circuits

parallel circuits

series parallel circuits

relationships between:

volts, amps and ohms in vehicle electrical circuits

current flow and required wire gauge to carry the current

voltage drop across resistive load and current flowing in the circuit

common fault types found in vehicle electrical circuits, including:

open circuit to power, signal and ground

short circuit to power, signal and ground

high resistance to power, signal and ground

types and construction of vehicle electrical wiring systems, including:

common multi-strand conductor

various wire gauges and insulation types

controller area network databus (CAN-bus) twisted pair wiring

audio speaker shielded wiring

principles of electricity, including:

alternating current (AC)

direct current (DC)

Ohm’s law

Watts law

Kirchhoff’s voltage law

Kirchhoff’s current law

identification, location and function of major components of common automotive electrical systems:

engine electrical systems, including:

battery

ignition

charging

starting

vehicle body electrical systems, including:

exterior lighting

internal lighting

vehicle access

washer and wiper

vehicle entertainment

wiring harness and loom assembly.