Lesson 1Exhaust and emissions control: manifold, catalytic converter, oxygen sensors inspectionThis part covers checks for exhaust and emissions parts, including manifolds, catalytic converters, and oxygen sensors. You will learn to detect leaks, overheating, internal harm, and sensor issues impacting performance.
Checking manifolds for leaks and cracksHeat shield, hanger, and joint checksCatalytic converter temperature and rattle testsOxygen sensor visual and wiring checksUsing scan data for O2 and catalyst testsSpotting exhaust restrictions and backpressureLesson 2Battery and charging system: state-of-charge, load test, terminals and alternator outputThis part details preventive assessments for the battery and charging system. You will learn state-of-charge testing, load testing, terminal maintenance, and alternator output checks to avoid starting failures and electrical breakdowns.
Open-circuit voltage and SOC evaluationBattery load testing and rating choiceTerminal cleaning and corrosion preventionChecking cable paths and ground pointsAlternator output and ripple testingParasitic draw checks in diagnosisLesson 3Air filter, fuel filter, cabin filter inspection and replacement criteriaThis part explains inspection and replacement standards for air, fuel, and cabin filters. You will learn how blockages affect performance, evaluate contamination, and adhere to service intervals for various conditions.
Engine air filter blockage and damage checksFuel filter clogging signs and serviceCabin filter access, removal, and inspectionSelecting proper filter types and ratingsService intervals for heavy-duty useRecording filter changes in service logsLesson 4Drive belts, accessory belt tensioners, pulleys inspection and replacement triggersThis part explains checks for drive belts, accessory belt tensioners, and pulleys. You will learn to spot wear, noise origins, and failure risks, and decide when preventive replacement is warranted.
Spotting belt cracks, glazing, and frayingMeasuring belt wear with toolsManual and automatic tensioner checksPulley alignment, wobble, and noise testsReplacing belts without harming partsPost-replacement review and noise diagnosisLesson 5Ignition system: spark plug inspection/replacement, ignition coils and lead checksHere you will examine preventive checks for the ignition system, including spark plugs, coils, and leads. You will learn inspection, testing, and replacement standards to prevent misfires, difficult starts, and low fuel efficiency.
Spark plug removal and condition assessmentGap measurement and proper torqueCoil primary and secondary testsInspecting leads, boots, and routingCommon ignition-related driving issuesSuggested replacement intervals and partsLesson 6Tyres, wheel bearings, alignment, and suspension (shocks, springs, bushings) inspection proceduresHere you will examine inspection methods for tyres, wheel bearings, alignment, and suspension parts like shocks, struts, springs, and bushings. Emphasis is on safety, tyre wear patterns, and ride and handling concerns.
Tyre tread depth, wear pattern, and ageChecking tyre pressures and load ratingsWheel bearing play, noise, and seal checksVisual checks of shocks and strutsSpring, bushing, and joint wear assessmentsBasic alignment signs and road testLesson 7Brake system: pads, rotors, calipers, lines, parking brake, ABS sensor checksThis part explains methodical brake inspections, covering pads, rotors, calipers, hydraulic lines, parking brake, and ABS sensors. It highlights wear limits, test approaches, common problems, and safe service practices.
Measuring pad thickness and wear patternsRotor runout, thickness, and surface checksCaliper slide, piston, and seal inspectionBrake hose, hard line, and leak checksParking brake travel and holding testsABS sensor, wiring, and tone ring checksLesson 8Engine oil and oil filter: checking level, contamination, correct spec and change criteriaThis part covers engine oil and filter upkeep, including level checks, contamination indicators, viscosity and spec confirmation, and change standards based on mileage, time, and operating conditions.
Checking oil level, colour, and smellSpotting fuel, coolant, or metal contaminationSelecting right oil grade and specificationOil filter type, fit, and bypass functionService intervals and heavy-duty factorsResetting maintenance reminders properlyLesson 9Lighting, wipers, seals, and body corrosion inspection checklistYou will learn to inspect exterior and interior lighting, wiper systems, weather seals, and body corrosion. The part stresses visibility, preventing water entry, and early rust spotting to maintain safety and value.
Headlamp, brake, and signal lamp testsLens condition, aim, and beam pattern checksWiper blade, arm, and washer operationDoor, boot, and glass weather seal checksUnderbody and wheel arch rust inspectionRust treatment and protection methodsLesson 10Cooling system: coolant level, condition, hoses, thermostat, water pump checksYou will learn to assess coolant level, mixture, and state, and inspect hoses, thermostat, radiator, and water pump. The part emphasises leak detection, overheating avoidance, and proper coolant service steps.
Coolant level, mixture, and test toolsPressure testing radiator, cap, and hosesThermostat opening tests and failure signsWater pump bearing, seal, and noise checksInspecting heater core and bypass hosesFlushing and refilling with correct coolantLesson 11Fluids: transmission/gearbox, brake fluid, power steering/EPAS, differential; sampling and replacement intervalsHere you will learn to inspect, sample, and replace key vehicle fluids, including transmission, brake, power steering or EPAS, and differential oils. Focus is on intervals, contamination signs, and proper fluid specs.
Identifying correct OEM fluid specificationsTransmission fluid level, colour, and smell checkBrake fluid moisture testing and flushing stepsPower steering and EPAS fluid inspectionsDifferential and final drive oil serviceRecording fluid changes and service history
