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Follow the links below to find material targeted to the unit's elements, performance criteria, required skills and knowledge

Elements and Performance Criteria

1. Prepare to diagnose and repair light vehicle automatic transmission
   • Job requirements are determined from workplace instructions
   • Diagnostic information is sourced and interpreted
   • Diagnostic options are analysed and those most appropriate to the circumstances are selected
   • Hazards associated with the work are identified and risks are managed
   • Diagnostic tools and equipment are selected and checked for serviceability
2. Diagnose automatic transmission
   • Diagnostic tests are performed according to workplace procedures and safety requirements
   • Faults are identified from diagnostic test results and causes of faults are determined
   • Diagnosis findings are reported according to workplace procedures, including recommendations for necessary repairs or adjustments
3. Repair automatic transmission
   • Repair information is sourced and interpreted
   • Repair options are analysed and those most appropriate to the circumstances are selected
   • Repair tools, equipment and materials are selected and checked
   • Repairs and component replacements and adjustments are carried out according to manufacturer specifications, workplace procedures, and safety and environmental requirements, and without causing damage to components or system
   • Post-repair testing is carried out according to workplace procedures to confirm fault rectification, and any further problems detected as having been introduced during the repair process are rectified
4. Complete work processes
   • Final inspection is made to ensure work is to workplace expectations and transmission or vehicle is presented ready for use
   • Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected
   • Tools and equipment are checked and stored according to workplace procedures
   • Workplace documentation is processed according to workplace procedures
5. Prepare to diagnose and repair light vehicle automatic transmission
   • Job requirements are determined from workplace instructions
   • Diagnostic information is sourced and interpreted
   • Diagnostic options are analysed and those most appropriate to the circumstances are selected
   • Hazards associated with the work are identified and risks are managed
   • Diagnostic tools and equipment are selected and checked for serviceability
6. Diagnose automatic transmission
   • Diagnostic tests are performed according to workplace procedures and safety requirements
   • Faults are identified from diagnostic test results and causes of faults are determined
   • Diagnosis findings are reported according to workplace procedures, including recommendations for necessary repairs or adjustments
7. Repair automatic transmission
   • Repair information is sourced and interpreted
   • Repair options are analysed and those most appropriate to the circumstances are selected
   • Repair tools, equipment and materials are selected and checked
   • Repairs and component replacements and adjustments are carried out according to manufacturer specifications, workplace procedures, and safety and environmental requirements, and without causing damage to components or system
   • Post-repair testing is carried out according to workplace procedures to confirm fault rectification, and any further problems detected as having been introduced during the repair process are rectified
8. Complete work processes
   • Final inspection is made to ensure work is to workplace expectations and transmission or vehicle is presented ready for use
   • Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected
   • Tools and equipment are checked and stored according to workplace procedures
   • Workplace documentation is processed according to workplace procedures

Range Statement

This section specifies work environments and conditions that may affect performance. Essential operating conditions that may be present (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) are included. Bold italicised wording, if used in the performance criteria, is detailed below.

Safety requirements must include:	work health and safety (WHS) and occupational health and safety (OHS) requirements, including procedures for lifting, supporting and manual handling light vehicle automatic transmissions.
Environmental requirements must include:	procedures for trapping, storing and disposing of fluids released from light vehicle automatic transmissions.

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Performance Evidence

Before competency can be determined, individuals must demonstrate they can perform the following according to the standards defined in this unit’s elements, performance criteria, range of conditions and foundation skills:

diagnose and repair a fault in two different light vehicles with different automatic transmissions, in which the faults must involve two of the following components:

torque converter

transmission oil pump

front pump seal

valve body

shift or pressure solenoid

clutch pack

brake band

brake band servo

one-way clutch

planetary gear set

continuously variable transmission (CVT) belt or pulley

internal bearings or thrust washers

remove, refit or replace one of the above light vehicle automatic transmissions.

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Knowledge Evidence

Individuals must be able to demonstrate knowledge of:

work health and safety (WHS) and occupational health and safety (OHS) requirements relating to diagnosing and repairing light vehicle automatic transmissions, including procedures for lifting, supporting and manual handling light vehicle automatic transmissions

environmental requirements, including procedures for trapping, storing and disposing of fluids released from light vehicle automatic transmissions

operating principles of light vehicle automatic transmissions and associated components, including:

fluid couplings

planetary gears, including:

single planetary gear operation

types of compound planetary gears, including Ravigneaux and Simpson planetary gear sets

gear ratios and torque reduction and multiplication

lubricant types and properties

application, purpose and operation of light vehicle automatic transmissions and components, including:

torque converters, including:

impeller, stator, one-way clutch and turbine operation

lock-up torque converters

automatic transmission mechanical components, including brake bands, clutch packs, one-way clutches, and compound planetary gear sets

power flows, including:

longitudinal automatic transmissions

automatic transaxles

automatic transmission hydraulic components and hydraulic control components, including:

oil pumps

hydraulic valves, including pressure regulating valves, manual valves, shift valves, governor valves and throttle pressure valves

automatic transmission electronic components, including:

electronic control module

input sensors, including vehicle speed sensor, throttle position sensor, mass air flow (MAF) sensor, manifold absolute pressure (MAP) sensor, transmission range sensor, engine speed sensor and temperature sensor

electronic control module outputs, including indicator lamps, shift solenoids, pressure control solenoids and torque converter clutch solenoids

continuously variable transmissions, including operating principles of belts and pulleys

diagnostic testing procedures for light vehicle automatic transmissions, including procedures for:

stall tests

pressure test

using scan tools when testing

repair procedures for light vehicle automatic transmissions , including procedures for removing, replacing and adjusting them

post-repair testing procedures for light vehicle automatic transmissions.

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