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Title / Demonstrate knowledge of automotive electronic fuel injection system operation, and fault diagnosis and repair
Level / 3 / Credits / 4
Purpose / This theory-based unit standard is for people in the automotive repair industry. People credited with this unit standard are able to demonstrate knowledge of fuel injection system operation, and electronic fuel system fault diagnosis and repair.
Classification / Motor Industry > Automotive Fuel Systems and Exhaust
Available grade / Achieved
Explanatory notes
1Definition
Service information may include but is not limited to – technical information of a vehicle, machine, or product detailing operation; installation and servicing procedures; manufacturer instructions and specifications; technical terms and descriptions; and detailed illustrations. This can be accessed in hard copy or electronic format and is normally sourced from the manufacturer.
2Range
This unit standard includes – single point injection systems, multi-point injection systems.
3Information on automotive electronic fuel systems can be found from: training provider, industry or manufacturer courses; vehicle workshop manuals; automotive fuel injection manuals (contact a local book retailer, school or polytechnic library or the public library lending service); useful websites include but are not limited to: Automotive Books Ltd Capital Books How Stuff Works New Zealand Book Find public libraries Technical Books Whitcoulls
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of fuel injection system operation.
Evidence requirements
1.1Fuel injection circuit layout and function are described in accordance with service information.
Rangeair flow circuit, fuel supply circuit, control circuit.
1.2Sensor function and their operation in electronic controlled systems are explained in accordance with service information.
Rangeincludes but is not limited to – air mass sensors, fuel supply units, temperature sensors, oxygen sensors.
1.3Control unit function and operation are explained in accordance with service information.
Rangemethods of measurement, open and closed loop, warm-up cycle, acceleration, deceleration, cruising.
1.4The operation of electronic fuel systems is described in accordance with service information.
Outcome 2
Demonstrate knowledge of electronic fuel system fault diagnosis and repair.
Evidence requirements
2.1Range, compatibility, and use of test equipment for diagnosing faults are described in accordance with service information.
Rangeincludes but is not limited to – air flow circuit, fuel supply circuit, control circuit;
multimeter, oscilloscope, pressure gauge, vacuum pump, light emitting diode (LED) test light.
2.2Methods of testing system operation are explained in accordance with service information.
Rangeincludes but is not limited to – air intake system, fuel supply system, sensor system, computer control system, self-diagnostic system.
2.3Servicing precautions to observe are described in accordance with service information.
Rangeworking with high pressure fuel, working with and storing electronic controls and computer systems.
2.4Servicing procedures as specified by the manufacturer are described in accordance with service information.
Rangevisual inspection, adjustments, verifying the problem, repairing and replacing components.
Replacement information / This unit standard and unit standard 240were replaced by unit standard 30436.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 AssessmentRegistration / 1 / 31 October 1995 / 31 December 2020
Review / 2 / 29 March 1999 / 31 December 2020
Review / 3 / 25 January 2008 / 31 December 2020
Review / 4 / 17 August 2017 / 31 December 2020
Consent and Moderation Requirements (CMR) reference / 0014
This CMR can be accessed at
Please note
Providers must be granted consent to assess against standards (accredited) by NZQA, 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.
Requirements for consent to assess and an outline of the moderation system that applies to this standard are outlined in the Consent and Moderation Requirements (CMR). The CMR 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.
MITO New Zealand IncorporatedSSB Code 101542 / New Zealand Qualifications Authority 2018 / / New Zealand Qualifications Aut