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 THAT HAS PASSED THE END DATE: 

Diagnose and repair vehicle stability, traction and drive control (VSTDC) systems 
SAQA US ID UNIT STANDARD TITLE
376623  Diagnose and repair vehicle stability, traction and drive control (VSTDC) systems 
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 5  Level TBA: Pre-2009 was L5  16 
REGISTRATION STATUS REGISTRATION START DATE REGISTRATION END DATE SAQA DECISION NUMBER
Passed the End Date -
Status was "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 replaces: 
US ID Unit Standard Title Pre-2009 NQF Level NQF Level Credits Replacement Status
12232  Diagnose and repair vehicle stability, traction and drive control (VSTDC) systems  Level 5  Level TBA: Pre-2009 was L5  20   

PURPOSE OF THE UNIT STANDARD 
Learners accredited with this unit standard will be able to discuss the importance of vehicle stability, traction and drive control systems, the components and their functions, test and diagnose problems in vehicle stability, traction and drive control systems and replace and/or repair components of the vehicle stability, traction and drive control systems. The unit standard involves the application of both the theory and skills to achieve these autotronics-specific outcomes.

Learners credited with this standard will be able to:
  • Discuss the operation of vehicle stability, traction and drive control systems.
  • Discuss the components of and equipment used in the VSTDC system.
  • Test and diagnose VSTDC systems.
  • Replace or repair components in the VSTDC system. 
    		•

    LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
  • Communication at NQF Level 4.
  • Mathematical Literacy at NQF Level 4. 
    		•

    UNIT STANDARD RANGE 
    N/A 

    Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    Discuss the operation of vehicle stability, traction and drive control system. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    The VSTDC system is discussed in terms of its relationship to the other systems of the automobile. 

    ASSESSMENT CRITERION 2 
    The function/purpose of the VSTDC system is discussed to show how it assists the driver to control the automobile. 

    ASSESSMENT CRITERION 3 
    The different sub-systems of the VSTDC system are discussed and their inter-relationships are explored. 
    ASSESSMENT CRITERION RANGE 
    Sub-systems include the anti-lock brake system (ABS), traction control system (TCS), electronic stability programme (ESP), electric transmission control (ETC).
     

    ASSESSMENT CRITERION 4 
    Circuit diagrams of the sub-systems are analysed and used to explain how the sub-systems work and how they help to resolve electronic problems associated with the systems. 

    ASSESSMENT CRITERION 5 
    Aspects pertaining to safety, health, environmental and housekeeping are discussed to maintain safety of self and others. 

    ASSESSMENT CRITERION 6 
    The manufacturing specifications on the vehicle stability, traction and drive control systems are discussed to demonstrate the importance of these specifications in interpreting and performing any work on the systems. 

    SPECIFIC OUTCOME 2 
    Discuss the components of and the equipment used in the VSTDC system. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    The components of the VSTDC system and its sub-systems are identified and discussed in terms of their functions. 
    ASSESSMENT CRITERION RANGE 
    Components include wheel speed sensors, electronic control units (ECU), Motronic ECU, electronic control valve, YAW sensors, lateral acceleration sensors, steering wheel angle sensors, primary pressure sensors and electronic throttle control.

    Hydraulic components include hydraulic pressure modulator with solenoid valves, hydraulic pressure modulator with integrated ECU, ABS hydraulic pressure modulator, hydraulic actuators, and hydraulic modulators.
     

    ASSESSMENT CRITERION 2 
    The links between the components (if any) are explored in terms of how they support the VSTDC system. 

    ASSESSMENT CRITERION 3 
    The equipment to be used when working with the components is listed and described. 

    SPECIFIC OUTCOME 3 
    Test and diagnose VSTDC systems. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    The principles of testing and diagnosing are discussed to provide a background for the actual task. 
    ASSESSMENT CRITERION RANGE 
    Principles include knowledge of other related components, starting diagnosis from the easy to the more difficult.
     

    ASSESSMENT CRITERION 2 
    Different types of diagnosis are conducted according to procedure. 
    ASSESSMENT CRITERION RANGE 
    Types may include the electronic method/procedure, the mechanical/visual method or procedure.
     

    ASSESSMENT CRITERION 3 
    A situation (context) is evaluated and a decision taken about what to test and diagnose. 

    ASSESSMENT CRITERION 4 
    Testing equipment is selected and used according to manufacturer's instructions and specifications to diagnose faults. 

    ASSESSMENT CRITERION 5 
    A test and diagnosis of required components of the system are conducted as per manufacturer's requirements. 

    ASSESSMENT CRITERION 6 
    Guided fault finding procedures are described and applied as per manufacturer's requirements. 

    SPECIFIC OUTCOME 4 
    Replace or repair components in the VSTDC system. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    Information gathered is evaluated to decide whether to repair or replace a component. 

    ASSESSMENT CRITERION 2 
    The methodology/procedure to repair and/or replace a component is explained and applied according to manufacturer's requirements. 

    ASSESSMENT CRITERION 3 
    The appropriate component for the repair or replacement is identified and selected according to manufacturer's requirements and specifications. 

    ASSESSMENT CRITERION 4 
    The coding of a new ECU if required is performed in order to integrate it into the complete system. 

    ASSESSMENT CRITERION 5 
    Final inspection procedures and quality checks are performed on work completed and necessary adjustments are made to ensure adherence to industry standards. 

    ASSESSMENT CRITERION 6 
    Appropriate tools and equipment are used to perform repairs and replacements of components and perform final tests. 

    ASSESSMENT CRITERION 7 
    Safety, housekeeping, health and environmental issues are described and applied when repairing and replacing components of the vehicle stability, traction and drive control systems. 

    ASSESSMENT CRITERION 8 
    Implications of time wasting when repairing or replacing components are discussed in terms of impact on productivity and costs. 

    ASSESSMENT CRITERION 9 
    All relevant documentation during a repair or replace operation is prepared and completed according to company procedure. 
    ASSESSMENT CRITERION RANGE 
    Documentation includes fault finding reports and requisition forms as per 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:
    > Input sensors.
    > Actuators.
    > Electronic control unit (ABS, TCS, ESP, ETC).
    > Feed back loop control.
    > Sub-systems.
  • Purpose of:
    > Electronic control unit/s.
    > Input and output sensors.
    > Testing of circuits and components.
    > Applying electronic safety.
    > Diagnosing fault conditions.
  • Attributes, descriptions, characteristics and properties:
    > Electronic control unit/s.
    > Electronic test equipment.
    > ABS/ETC/ESP/TCS systems.
  • Sensory cues:
    > Use of senses to detect faulty component in a circuit.
    > Use of sight to read circuit diagrams and test equipment.
  • Causes and effects, implications of:
    > Causes of damage and injury.
    > Implications of using incorrect source voltages.
    > Implications incorrect testing applications.
    > Implications of incorrect component selection.
    > Implications of not observing manufacturer's specifications.
  • Procedures and techniques:
    > Safety procedures.
    > Fault finding procedures.
    > Diagnostic techniques for fault location (codes).
    > Repair procedures.
  • Regulations, legislation, agreements, policies and standards:
    > Relevant manufacturer's regulations/standards.
    > Applicable safety, health and environmental legislation.
  • Theory: rules and principles laws:
    > ABS Braking system.
    > Hydraulic system.
    > Accelerator system.
    > Electronic control unit.
    > Communication medium.
    > Networking.
    > Tyres (force, vertical/longitudinal, slip, friction and aquaplaning).
    > MSR engine drag control.
    > Electronic throttle control.
    > Lateral/linear acceleration.
    > ETC or EGAS throttle control.
  • Relationships and systems:
    > Relationship between VSTDC system and that of electronic control unit(s). 
    		•

    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:
  • Testing and diagnosing vehicle stability, traction and drive control systems. 
    		•

    UNIT STANDARD CCFO ORGANISING 
    Organise and manage oneself and one's activities responsively and effectively when:
  • Discussing the operation of vehicle stability, traction and drive control systems and their components.
  • Testing and diagnosing vehicle stability, traction and drive control systems.
  • Replacing or repairing components of vehicle stability, traction and drive control systems.
  • Performing final inspection and quality checks. 
    		•

    UNIT STANDARD CCFO COLLECTING 
    Collect, analyse, organise and critically evaluate information to:
  • Test and diagnose vehicle stability, traction and drive control systems.
  • Replace or repair components of vehicle stability, traction and drive control systems.
  • Select appropriate components and equipment to perform replacement or repair operations. 
    		•

    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 vehicle stability, traction and drive control systems. 
    		•

    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 recognising that the problem-solving contexts do not exist in isolation when engaging with problems in vehicle stability, traction and drive control systems. 

    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 
    This unit standard replaces unit standard 12232, "Diagnose and repair vehicle stability, traction and drive control (VSTDC) systems", Level 5, 20 credits. 

    QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Core  78943   National Certificate: Autotronics  Level 5  Level TBA: Pre-2009 was L5  Passed the End Date -
    Status was "Reregistered"     		 2023-06-30  MERSETA 
    Elective  78883   Further Education and Training Certificate: Autotronics  Level 4  NQF Level 04  Passed the End Date -
    Status was "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.
     
    NONE 


    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.