Cert III Automotive Mechanic study guide
Cert III Automotive Mechanic · Work through your exam, one topic at a time.
The Certificate III in Automotive Mechanical Technology is a trade-level vocational qualification for people who service, diagnose and repair light vehicles or related machinery. It suits apprentices building their first trade skills, experienced technicians who want their competence formally recognised, and career changers entering the industry. The Cert III Automotive Mechanic study guide has 10 sections and about 2,534 words.
01Workplace Safety and Environmental Practices
Every workshop task starts with hazard identification and risk control. Understand the hierarchy of control: eliminate the hazard, substitute a safer option, apply engineering controls such as ventilation or guarding, then administrative controls such as procedures and training, and finally personal protective equipment as the last line of defence.
314 words, about 2 min02Tools, Equipment and Workshop Hand Skills
Candidates must know the correct selection, use, care and inspection of hand tools and workshop equipment. Understand torque wrenches: the difference between click, beam and electronic types, why they must be stored at their lowest setting, and why calibration matters.
293 words, about 1 min03Engine Mechanical Systems Diagnosis and Repair
Understand the four-stroke cycle, cylinder arrangement, valve train types and the relationship between bore, stroke, compression ratio and displacement. Know the major components: block, head, pistons, rings, connecting rods, crankshaft, bearings, camshaft and timing drive.
269 words, about 1 min04Automotive Electrical and Electronic Systems
Understand basic electrical theory: voltage, current, resistance and Ohm's law, plus series and parallel circuits. Know battery construction, testing and charging, starting and charging systems, and the operation of relays, fuses and switches.
253 words, about 1 min05Braking Systems Diagnosis and Repair
Understand hydraulic braking principles, master cylinder operation, brake fluid specifications and the dangers of contaminated or moisture-laden fluid. Know disc and drum brake construction, pad and shoe wear indicators, rotor thickness and runout measurement, and the correct bedding-in procedure.
256 words, about 1 min06Steering and Suspension Systems
Understand steering geometry: camber, caster, toe and thrust angle, and how each affects tyre wear and handling. Know the construction and diagnosis of MacPherson struts, double wishbone and live axle suspension, plus springs, shock absorbers, bushes and ball joints.
250 words, about 1 min07Manual and Automatic Driveline and Transmission Systems
Understand clutch operation, manual gearbox construction, synchronisers, final drive and differentials. Know automatic transmission types, including traditional planetary, CVT and dual-clutch, and the role of the torque converter.
240 words, about 1 min08Cooling, Lubrication and Fuel Systems
Understand cooling system operation: radiator, thermostat, water pump, hoses, expansion tank and pressure cap. Know the purpose of coolant additives, the difference between types, and the risks of mixing them.
224 words, about 1 min09Emission Control and Vehicle Inspection/Roadworthy Checks
Understand the major emission control systems: positive crankcase ventilation, evaporative emissions, exhaust gas recirculation, catalytic converter, diesel particulate filter and selective catalytic reduction. Know how each reduces specific pollutants and their common failure symptoms.
214 words, about 1 min10Customer Communication, Documentation and Industry Compliance
Understand professional communication: greeting the customer, listening actively, explaining technical issues in plain language, providing accurate quotes and obtaining authorisation before additional work. Know the importance of job cards, repair orders, service records and warranty documentation.
221 words, about 1 min