24148 version 1
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Demonstrate knowledge of engine management systems
Level
3
Credits
3
Purpose
This theory-based unit standard is for people in the automotive industry.
People credited with this unit standard are able to demonstrate knowledge of
engine management system functions, and combining electronic ignition with
engine management functions.
Subfield
Motor Industry
Domain
Automotive Electrical and Electronics
Status
Registered
Status date
25 January 2008
Date version published
25 January 2008
Planned review date
31 December 2012
Entry information
Recommended: Unit 235, Describe automotive ignition
systems and their operation; and Unit 24131,
Demonstrate knowledge of electronic components and
their application in the automotive industry; or
demonstrate equivalent knowledge and skills.
Accreditation
Evaluation of documentation and visit by NZQA and
industry.
Standard setting body (SSB)
NZ Motor Industry Training Organisation (Incorporated)
Accreditation and Moderation Action Plan (AMAP) reference
0014
This AMAP can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Special notes
None.
 New Zealand Qualifications Authority 2016
24148 version 1
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Elements and performance criteria
Element 1
Demonstrate knowledge of engine management system functions.
Performance criteria
1.1
Management control for various systems on an engine is described in
accordance with vehicle or engine manufacturer specifications.
Range
1.2
The conditions sensed by an engine management system are described in
accordance with vehicle or engine manufacturer specifications.
Range
1.3
includes but is not limited to – fuel injection, ignition firing and
timing, idle speed, fuel supply, emission system, self-diagnostic
test codes.
includes but is not limited to – crankshaft position, engine speed,
manifold absolute pressure, manifold air temperature, engine
coolant temperature, throttle position, exhaust gas oxygen content,
system voltage, park neutral switch position, vehicle speed, air
conditioning request, engine detonation, cranking signal,
automatic transmission fluid temperature and clutch signal, power
steering pressure.
The systems controlled from the electronic control module (ECM) are described
in accordance with vehicle or engine manufacturer specifications.
Range
includes but is not limited to – fuel control, fuel injectors, electric
fuel pump, direct fire ignition system, electronic spark timing, idle
air control, automatic transmission torque converter clutch, air
conditioning compressor clutch, radiator cooling fan, power
steering control, diagnostic system, 4x4 systems, free wheel hubs,
differential control.
Element 2
Demonstrate knowledge of combining electronic ignition with engine management
functions.
Performance criteria
2.1
The role of the electronic ignition system as a section of the engine
management system is explained in accordance with manufacturer
specifications.
Range
description in block diagram form;
sensors, ECM, outputs.
 New Zealand Qualifications Authority 2016
24148 version 1
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2.2
Method of, and reasons for, spark advance in an engine management system
are described in accordance with manufacturer specifications.
Range
2.3
Electronic knock control operation is described in relation to engine
management systems in accordance with manufacturer specifications.
Range
2.4
description in block diagram form;
input signals, ECM, output signal.
knocking sensor, evaluation circuit, control circuit, ignition output,
safety monitoring system.
Engine control function using Control Area Network (CAN) involving electronic
ignition is described in accordance with manufacturer specifications.
Range
use of a single ECM, combining sensor functions, use of selfdiagnostic test codes, minimising cables and connections.
Please note
Providers must be accredited by NZQA, or an inter-institutional body with delegated
authority for quality assurance, before they can report credits from assessment against
unit standards or deliver courses of study leading to that assessment.
Industry Training Organisations must be accredited by NZQA before they can register
credits from assessment against unit standards.
Accredited providers and Industry Training Organisations assessing against unit standards
must engage with the moderation system that applies to those standards.
Accreditation requirements and an outline of the moderation system that applies to this
standard are outlined in the Accreditation and Moderation Action Plan (AMAP). The
AMAP also includes useful information about special requirements for organisations
wishing to develop education and training programmes, such as minimum qualifications for
tutors and assessors, and special resource requirements.
Comments on this unit standard
Please contact the NZ Motor Industry Training Organisation (Incorporated)
info@mito.org.nz if you wish to suggest changes to the content of this unit standard.
 New Zealand Qualifications Authority 2016