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Title / Diagnose and rectify faults in vehicle and machine body electronics
Level / 4 / Credits / 8
Purpose / This unit standard is for people in the automotive electrical industry. People credited with this unit standard are able to: demonstrate knowledge of body electronic systems in vehicles and machines; test a body control system for faults; and rectify body control system faults.
Classification / Motor Industry > Automotive Electrical and Electronics
Available grade / Achieved
Entry information
Critical health and safety prerequisites / Unit 5463, Explain the operation and repair requirements of automotive electronic control systems,or demonstrate equivalent knowledge and skills.
Explanatory notes
1Comfort systems described in this unit standard do not include climatic control. Refer to Unit 906, Diagnose and rectify automotive climate control system faults.
2The following legislation and amendments are required to be consulted and followed where applicable:
–Health and Safety in Employment Act, 1992.
3Reference to suitable test equipment means industry approved 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.
4Because of the particular nature of this unit standard, it is essential that the practical assessment evidence is obtained from commercial jobs in the workplace under normal workplace conditions.
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of body electronic systems in vehicles and machines.
Rangesuspension control, steering control, light controls, wiper control, compartment security and safety control, information systems, comfort and entertainment systems.
Evidence requirements
1.1The purpose of a body electronic control system is described according to manufacturer’s technical information.
Rangedriver and passenger comfort, safety, security, monitoring functions, in-built design features, ease of control, entertainment.
1.2A system and associated component parts are recognised on the vehicle and/or machine by reference to manufacturer's technical information.
1.3The principles of operation of a body control system are described with the aid of circuit diagram information.
Rangesuspension – electronic over hydraulic, electronic over air systems;
power steering – speed sensitive;
lighting systems – lamp failure, lights off-on indicators, automatic dimmer, dome lamp delay, warning light systems;
window screen wipers – variable dwell, speed sensitive, moisture sensitive;
compartment security – keyless entry, central locking, electronic deadlock, theft deterrent systems- infrared control;
compartment safety – air bag control, seat belt pre-tensioners, seat memory, instrumentation head-up display, rear mirror control, driver fatigue sensor;
driver information systems – vehicle monitoring display, travel data, audible warning systems;
comfort and entertainment – sensitivity control for power windows and sun roofs, cruise control, automatic antenna control, radio frequency memory and search control, phone link-up.
1.4The way in which body control vehicle systems form into a central control unit is explained according to manufacturer’s technical information.
Outcome 2
Test a body control system for faults.
Evidence requirements
2.1Safe working practices are observed throughout the task.
Rangepersonal safety; safety of others; equipment, vehicle and machine safety.
2.2The specific test information is obtained before any testing is carried out.
Rangeworkshop manuals, technical bulletins, microfiche, computer.
2.3The electronic circuit of the system to be tested is traced on the manufacturer's wiring diagram.
2.4The wiring diagram information of the circuit to be tested is translated to the electronic circuit on a vehicle and/or machine.
2.5Test points on the vehicle and/or machine are located that will enable the diagnosis of the particular system to be carried out.
2.6Suitable test equipment is selected and used that enable faults in a body control system to be located.
2.7Test results obtained are compared to those specified by the manufacturer and any discrepancies found are traced to their source and the fault(s) isolated.
2.8No physical and electrical damage is caused to circuit components and electronic devices.
2.9The feasibility of a repair is determined based on relevant factors.
Rangetype and extent of repairs required, cost of repair, availability and cost of replacement.
2.10A report based on the feasibility of repair is presented to the supervisor.
Outcome 3
Rectify body control system faults.
Evidence requirements
3.1Safe working practices are observed throughout the task.
Rangepersonal safety; safety of others; equipment, vehicle and machine safety.
3.2Faults that do not require component replacement are rectified according to manufacturer's instructions.
3.3Faulty components are replaced according to manufacturer's specifications.
3.4Precautions are taken to prevent damage to electronic components that could be caused by electrostatic discharge and installation methods.
Rangemetal screening of components, earthing operator.
Replacement information / This unit standard and unit standard 5463 have been replaced by unit standard 24119, unit standard 24121, unit standard 24122, unit standard 24123 and unit standard 24124. This unit standard and unit standard 8182 have been replaced by unit standard 24120.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 / 28 September 1994 / 31 December 2016
Review / 2 / 21 February 1999 / 31 December 2016
Review / 3 / 25 January 2008 / 31 December 2016
Rollover / 4 / 19 November 2010 / 31 December 2016
Rollover / 5 / 23 November 2020 / 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, 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 Conesnt 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.
NZ Motor Industry Training Organisation (Incorporated)SSB Code 101542 / New Zealand Qualifications Authority 2018