SAQA All qualifications and part qualifications registered on the National Qualifications Framework are public property. Thus the only payment that can be made for them is for service and reproduction. It is illegal to sell this material for profit. If the material is reproduced or quoted, the South African Qualifications Authority (SAQA) should be acknowledged as the source.
SOUTH AFRICAN QUALIFICATIONS AUTHORITY 
REGISTERED UNIT STANDARD: 

Diagnose and repair networking/data transfer systems in automobiles 
SAQA US ID UNIT STANDARD TITLE
376622  Diagnose and repair networking/data transfer systems in automobiles 
ORIGINATOR
SGB Manufacturing and Assembly Processes 
PRIMARY OR DELEGATED QUALITY ASSURANCE FUNCTIONARY
-  
FIELD SUBFIELD
Field 06 - Manufacturing, Engineering and Technology Manufacturing and Assembly 
ABET BAND UNIT STANDARD TYPE PRE-2009 NQF LEVEL NQF LEVEL CREDITS
Undefined  Regular  Level 4  NQF Level 04 
REGISTRATION STATUS REGISTRATION START DATE REGISTRATION END DATE SAQA DECISION NUMBER
Reregistered  2018-07-01  2023-06-30  SAQA 06120/18 
LAST DATE FOR ENROLMENT LAST DATE FOR ACHIEVEMENT
2024-06-30   2027-06-30  

In all of the tables in this document, both the pre-2009 NQF Level and the NQF Level is shown. In the text (purpose statements, qualification rules, etc), any references to NQF Levels are to the pre-2009 levels unless specifically stated otherwise.  

This unit standard does not replace any other unit standard and is not replaced by any other unit standard. 

PURPOSE OF THE UNIT STANDARD 
Qualifying learners are able to locate, diagnose and repair networking and on board data transfer systems on an automobile from circuit diagrams, as per instruction, in accordance to procedure, and/or with the aid of service manuals and special tools in a safe and aware manner. Learners will also demonstrate theoretical knowledge about the purpose, variant and common causes of failure with networking/data transfer systems.

Learners credited with this standard will be able to:
  • Interpret an automobile networking/data transfer diagram.
  • Locate and diagnose faults on networking/data transfer systems.
  • Repair and replace faulty networking components/wiring.
  • Explain the purpose, variants and common causes of failure with networking/ data transfer systems. 

  • LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
    It is assumed that the learner is competent in:
  • Communication at NQF Level 3.
  • Mathematical literacy at NQF Level 3.
  • The unit standards:
    > Trace and repair auto-electrical circuits on automobiles.
    > Fit and wire up auxiliary auto electrical equipment. 

  • UNIT STANDARD RANGE 
    N/A 

    Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    Interpret automobile networking/data transfer diagrams. 
    OUTCOME RANGE 
    Diagrams and symbols may include but are not limited to CAN, VAN, LIN, fibre optic systems, all parts of the data transfer/networking system, block, functional and wiring diagrams as well as components such as control units, sensors and actuators that are linked to them. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The correct diagram for the system is located and identified in relation to the specific system. 

    ASSESSMENT CRITERION 2 
    The formats of diagrams are discussed in terms of their differences. 

    ASSESSMENT CRITERION 3 
    The diagram of a networking/data transfer system is read and interpreted using its key components, symbols and terminology. 

    ASSESSMENT CRITERION 4 
    The basic flow of data/information through the diagram is shown or explained in order to understand the functioning of the system. 

    ASSESSMENT CRITERION 5 
    Links to applicable/associated circuits are identified and explained in order to understand interrelationships between systems. 

    SPECIFIC OUTCOME 2 
    Locate, interpret and diagnose faults on networking/data transfer systems. 
    OUTCOME RANGE 
    Possible faults may include earth (ground), open circuit, short circuit, high resistance joints, loose connections, faulty terminator resistors, control units, wrongly assigned terminals/connectors, kinked cables and excess networking current draw. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The correct test equipment is selected for each testing/diagnosis task. 
    ASSESSMENT CRITERION RANGE 
    Test equipment includes test probe, continuity tester, LED test lamp, multi-meter and oscilloscope, and computerized diagnostic equipment, optical testing device and any other manufacturer-specific or other recommended networking system test equipment.
     

    ASSESSMENT CRITERION 2 
    Trim and related components are removed and fitted according to procedure. 

    ASSESSMENT CRITERION 3 
    The test equipment is correctly set up for the tests to be carried out. 

    ASSESSMENT CRITERION 4 
    The testing is performed according to procedure and the results are interpreted correctly. 

    ASSESSMENT CRITERION 5 
    Test equipment is shut down and stored correctly after use. 

    SPECIFIC OUTCOME 3 
    Repair/replace faulty networking components/wiring. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The correct tools and procedures are used in carrying out replacement and/or repairs. 

    ASSESSMENT CRITERION 2 
    Programming or coding that may be required is performed according to procedure. (Fault codes are checked/cleared.) 

    ASSESSMENT CRITERION 3 
    Faulty wiring/data transfer cables/connectors are repaired/restored to working condition using accepted procedures. 

    ASSESSMENT CRITERION 4 
    The system's functioning is checked and confirmed after repairs are completed. 

    ASSESSMENT CRITERION 5 
    Any special tools and equipment used are correctly stored after use. 

    SPECIFIC OUTCOME 4 
    Explain the purpose, variants and common causes of failure with networking/data transfer systems. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The need for networking systems is explained in terms of new technology being installed on motor vehicles. 

    ASSESSMENT CRITERION 2 
    The basic types of networking/data transfer systems are explained and typical applications suited to each are given. 
    ASSESSMENT CRITERION RANGE 
    Types of networking may include CAN and variants thereof, LIN, Fibre optic, resistive or voltage coded systems.
     

    ASSESSMENT CRITERION 3 
    Common causes of failure of networking systems are listed and/or identified in order to better understand the common problems of the system. 
    ASSESSMENT CRITERION RANGE 
    Causes of failure may include but are not limited to faults with network wiring and connectors, faulty control units (hardware and/or software), loss of feed/earth/critical supply/wake up or similar signals to control units.
     

    ASSESSMENT CRITERION 4 
    A report is prepared and written as per standard company procedure. 


    UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS 
  • Anyone assessing a learner or moderating the assessment of a learner against this unit standard must be registered as an assessor with the relevant ETQA.
  • Any institution offering learning that will enable the achievement of this unit standard must be accredited as a provider with the relevant ETQA.
  • Assessment and moderation of assessment will be overseen by the relevant ETQA according to the ETQA policies and guidelines for assessment and moderation.
  • Moderation must include both internal and external moderation of assessments at exit points of the qualification, unless ETQA policies specify otherwise. Moderation should also encompass achievement of the competence described both in individual unit standards as well as the integrated competence described in the qualification. 

  • UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE 
    Names and functions of:
  • Oscilloscope.
  • Computerized and other diagnostic testers for vehicle network/data transfer system diagnosis.
  • Circuit components: Wiring, cables, connectors, control units, diagnostic and connector plugs and terminator resistors.
  • Function and operation of networking and data transfer circuits.

    Purpose of:
  • Terminator resistors.
  • Having multiple networks on a vehicle.
  • Differing data transfer rates.
  • Differing network voltages/speeds.
  • CAN HI/LO wire.
  • Gateway control units.
  • Networking connector plugs.
  • LIN bus single wire systems as opposed to CAN bus systems.
  • Fault finding techniques and procedures.

    Attributes, descriptions, characteristics and properties:
  • High resistance joints, faulty terminator resistors/wiring errors/faulty control units.

    Sensory cues:
  • Use of sight to check for loose conductors/kinked and broken cables/wires/wrongly assigned plugs and wires.
  • Use of sight to check for insulation wear.
  • Use of sight to check for component damage.
  • Use of sight to read test equipment and identify networking wiring and components.

    Causes and effects, implications of:
  • Implications of not using personal protection and/or vehicle protection equipment.
  • Implications of not following procedures.
  • Implications of partial or complete failure of the vehicle networking/Data transfer system.
  • Implications of not following manufacturer's specifications.

    Procedures and techniques:
  • Safety procedures.
  • Testing procedures.
  • Removal and fitting procedures.
  • Fault finding techniques.

    Regulations, legislation, agreements, policies and standards:
  • Colour coding of conductors.
  • Applicable safety, health and environmental legislation.

    Theory: rules, principles and laws:
  • The use of the basic binary number system in networking systems.
  • Prioritization and basic structure of networking messages on CAN bus systems.
  • Interference suppression techniques in automotive BUS systems.
  • Fault finding techniques.
  • High resistance joints.
  • Short, open circuit conditions.

    Relationships, systems:
  • Relationship of the networking/data transfer system to the amount and type of additional systems and the development of new automotive systems/and of the different types of networking/ data transfer systems to each other. 

  • UNIT STANDARD DEVELOPMENTAL OUTCOME 
    N/A 

    UNIT STANDARD LINKAGES 
    N/A 


    Critical Cross-field Outcomes (CCFO): 

    UNIT STANDARD CCFO IDENTIFYING 
    Identify and solve problems in which responses display that responsible decisions using critical and creative thinking have been made when:
  • Interpret an automobile networking/data transfer block diagram.
  • Use fault-finding techniques to diagnose problems with networking/data transfer systems. 

  • UNIT STANDARD CCFO WORKING 
    Work effectively with others as a member of a team, group, organization, community to:
  • Locate, diagnose and repair problems with networking/data transfer system. 

  • UNIT STANDARD CCFO ORGANISING 
    Organize and manage oneself and one's activities responsively and effectively when:
  • Interpreting an automobile networking/data transfer block diagram.
  • Using fault-finding techniques to locate, diagnose problems with networking/data transfer system.
  • Explaining the purpose, variants and common causes of failure with networking/ data transfer systems. 

  • UNIT STANDARD CCFO COLLECTING 
    Collect, analyze, organize and critically evaluate information to:
  • Interpret an automobile networking/data transfer block diagram.
  • Locate, diagnose and repair networking/data transfer problems. 

  • UNIT STANDARD CCFO COMMUNICATING 
    Communicate effectively using visual, mathematical and/or language skills in the modes of oral and/or written presentation to:
  • Prepare reports on failure of networking systems, as per company procedure. 

  • UNIT STANDARD CCFO SCIENCE 
    Use science and technology effectively and critically, showing responsibility towards the environment and the health of others by:
  • Using the equipment and tools according to manufacturer's instructions. 

  • UNIT STANDARD CCFO DEMONSTRATING 
    Demonstrate an understanding of the world as a set of related systems by recognizing that the problem-solving contexts do not exist in isolation when engaging with problems in networking/data transfer. 

    UNIT STANDARD ASSESSOR CRITERIA 
    N/A 

    REREGISTRATION HISTORY 
    As per the SAQA Board decision/s at that time, this unit standard was Reregistered in 2012; 2015. 

    UNIT STANDARD NOTES 
    N/A 

    QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Core  78883   Further Education and Training Certificate: Autotronics  Level 4  NQF Level 04  Reregistered  2023-06-30  MERSETA 


    PROVIDERS CURRENTLY ACCREDITED TO OFFER THIS UNIT STANDARD: 
    This information shows the current accreditations (i.e. those not past their accreditation end dates), and is the most complete record available to SAQA as of today. Some Primary or Delegated Quality Assurance Functionaries have a lag in their recording systems for provider accreditation, in turn leading to a lag in notifying SAQA of all the providers that they have accredited to offer qualifications and unit standards, as well as any extensions to accreditation end dates. The relevant Primary or Delegated Quality Assurance Functionary should be notified if a record appears to be missing from here.
     
    1. Dawsons Training Academy (Pty) Ltd (DURBAN) (TP) 
    2. Eastcape Midlands Public FET College - Uitenhage (High Street)Campus 
    3. Imperial Technical Training Academy (WADEVILLE) (TP) 
    4. McCarthy Automotive Artisan Academy (MIDRAND) (TP) 
    5. Qualitas Training cc (SELBY) (TP) 
    6. Toyota Academy Toyota SA Motors (Pty) Ltd (SANDTON) (TP) 
    7. Volkswagen of South Africa (Pty) Ltd - Technical Learning Academy (UIT 



    All qualifications and part qualifications registered on the National Qualifications Framework are public property. Thus the only payment that can be made for them is for service and reproduction. It is illegal to sell this material for profit. If the material is reproduced or quoted, the South African Qualifications Authority (SAQA) should be acknowledged as the source.