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Title / Diagnose and repair automotive wiper system faults
Level / 4 / Credits / 2
Purpose / This unit standardis for peoplein the automotive repair industry. People credited with this unit standard areable to: demonstrate knowledge of windscreen wiper systems; demonstrate knowledge of headlamp cleaning systems; test the wiper system for correct operation; and repair wiper system faults.
Classification / Motor Industry > Automotive Electrical and Electronics
Available grade / Achieved
Entry information
Critical health and safety prerequisites / Unit 898, Identify an automotive wiring diagram and translate information to a motor vehicle circuit,or demonstrate equivalent knowledge and skills.
Explanatory notes
1The following legislation, regulations, and their amendments are required to be consulted and followed where applicable:
Health and Safety in Employment Act, 1992
Traffic Regulations, 1976.
2Reference to suitable equipment means industry approved equipment that is 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.
3Because 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 windscreen wiper systems.
Range2-speed, intermittent, screenwash, self-parking (forward and reverse rotation), rear screen wash-wipe systems.
Evidence requirements
1.1The components of the wiper systems are identified and their most common locations on a vehicle established.
1.2A circuit layout for each system and the function of its components are described according to manufacturer’s specifications.
Outcome 2
Demonstrate knowledge of headlamp cleaningsystems.
Rangewash-wipe and jet systems.
Evidence requirements
2.1The components of the systems are identified, and their functions established.
2.2A circuit and a system layout for each system are described according to manufacturer’s specifications.
Outcome 3
Test the wiper system for correct operation.
Evidence requirements
3.1Safe working practices are observed throughout the task.
Rangepersonal safety, safety of others, equipment and vehicle safety.
3.2Screenwash reservoirs are filled to the specified level with a solution suitable for cleaning the screen and lamps.
3.3The wiper system is operated on a wet screen, in all of its modes, and any malfunction is noted.
3.4The mechanical linkage and system components and tubing are inspected, and the cause of any faults is determined.
3.5Suitable equipment is selected and used to enable the electrical circuit and components to be tested.
3.6The electrical circuit and components are tested, and any faults are identified and located.
Outcome 4
Repair wiper system faults.
Evidence requirements
4.1Safe working practices are observed throughout the task.
Rangepersonal safety, safety of others, equipment and vehicle safety.
4.2The faulty part and/or assembly is removed from the vehicle, in the sequence and manner specified by the manufacturer, and without causing damage to vehicle trim or body panels.
4.3Repairable components are restored to full serviceability.
4.4Non-repairable components are replaced with new parts to manufacturer's specifications.
4.5The repaired and replacement parts are assembled according to manufacturer's instructions and installed in the vehicle without causing damage to vehicle trim or body panels.
4.6The wiper system is checked, and any adjustments made, to ensure that normal operation has been restored, and to conform to Traffic Regulations.
Replacement information / This unit standard has been replaced by unit standard 24094 and unit standard 24095.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 / 29 October 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
Rollover / 6 / 20 November 2015 / 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