NZQA Expiring unit standard
961 version 5
Page 1 of 4
Title
Diagnose and rectify faults in engine management systems
Level
4
Credits
8
Purpose
This 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; diagnose
engine management problems; and rectify faults in an engine
management system.
Classification
Motor Industry > Automotive Electrical and Electronics
Available grade
Achieved
Entry information
Critical health and
safety prerequisites
Unit 893, Diagnose and rectify vehicle emission control system
faults; and Unit 3400, Check a four stroke petrol engine for
condition using hand held equipment; or demonstrate
equivalent knowledge and skills.
Explanatory notes
1
The following legislation and amendments are required to be consulted and followed
where applicable:
– Health and Safety in Employment Act, 1992.
2
Reference to suitable tools and equipment means industry approved tools and
equipment that are recognised within the industry as being the most suited to
complete the task to a professional and competent manner with due regard to safe
working practices.
NZ Motor Industry Training Organisation
(Incorporated)
SSB Code 101542
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
961 version 5
Page 2 of 4
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of engine management system functions.
Evidence requirements
1.1
Management control for various systems on an engine is described according to
vehicle and/or engine manufacturer’s specifications.
Range
1.2
The conditions sensed by an engine management system are identified.
Range
1.3
fuel injection, ignition firing and timing, idle speed, fuel supply,
emission system, self-diagnostic codes.
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 identified.
Range
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.
Outcome 2
Diagnose engine management problems.
Evidence requirements
2.1
Safe working practices are observed throughout the task.
Range
2.2
personal safety; safety of others; equipment, vehicle, and machine
safety.
The symptoms of the problem stated are confirmed.
Range
customer's information, service manual information, testing the
vehicle.
2.3
Suitable test equipment is selected and used to enable faults to be diagnosed.
2.4
The activation routine for self-diagnosis is carried out according to service
manual instructions.
NZ Motor Industry Training Organisation
(Incorporated)
SSB Code 101542
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
2.5
The faulty sub-section is isolated.
Range
2.6
961 version 5
Page 3 of 4
air, fuel, sensors, control.
The fault(s) and its cause(s) are located by system tests and observation.
Outcome 3
Rectify faults in an engine management system.
Evidence requirements
3.1
Safe working practices are observed throughout the task.
Range
personal safety; safety of others; equipment, vehicle, and machine
safety.
3.2
Suitable tools and equipment are used to enable system faults to be rectified.
3.3
Service precautions are carried out to prevent damage to electronic
components.
3.4
The fault(s) and its cause(s) are corrected by repair and replacement as
specified by the vehicle manufacturer's instructions, to enable normal engine
management system operation to be restored.
3.5
Self-diagnostic codes are cleared according to vehicle manufacturer's
instructions.
Replacement information
This unit standard, unit standard 892, and unit standard
5460 have been replaced by unit standard 24090 and
unit standard 24091.
This unit standard is expiring. Assessment against the standard must take place by
the last date for assessment set out below.
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
9 November 1993
31 December 2016
Review
2
4 October 1996
31 December 2016
Review
3
26 February 1999
31 December 2016
Review
4
25 January 2008
31 December 2016
Rollover
5
19 November 2010
31 December 2016
NZ Motor Industry Training Organisation
(Incorporated)
SSB Code 101542
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
961 version 5
Page 4 of 4
Accreditation and Moderation Action Plan (AMAP) reference
0014
This AMAP can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Please note
Providers must be granted consent to assess against standards (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 granted consent to assess against standards by
NZQA before they can register credits from assessment against unit standards.
Providers and Industry Training Organisations, which have been granted consent and
which are assessing against unit standards must engage with the moderation system that
applies to those standards.
Consent 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.
NZ Motor Industry Training Organisation
(Incorporated)
SSB Code 101542
 New Zealand Qualifications Authority 2016