Lesson 1Exhaust an emissions control: manifold, catalytic converter, oxygen sensors inspectionDis section cover inspection of exhaust an emissions components, including manifolds, catalytic converters, an oxygen sensors. Yuh wi learn fi spot leaks, overheating, internal damage, an sensor faults affecting performance.
Checking manifolds for leaks and cracksHeat shield, hanger, and joint inspectionCatalytic converter temperature and rattle checksOxygen sensor visual and wiring inspectionUsing scan data for O2 and catalyst testsIdentifying exhaust restrictions and backpressureLesson 2Battery an charging system: state-of-charge, load test, terminals an alternator outputDis section detail preventive checks fi de battery an charging system. Yuh wi learn state-of-charge testing, load testing, terminal service, an alternator output checks fi prevent no-starts an electrical failures.
Open-circuit voltage and SOC assessmentBattery load testing and rating selectionTerminal cleaning and corrosion preventionChecking cable routing and ground pointsAlternator output and ripple testingParasitic draw checks during diagnosisLesson 3Air filter, fuel filter, cabin filter inspection an replacement criteriaDis section explain inspection an replacement criteria fi air, fuel, an cabin filters. Yuh wi learn how restriction affects performance, how fi assess contamination, an how fi follow service intervals fi different operating conditions.
Engine air filter restriction and damage checksFuel filter clogging symptoms and serviceCabin filter access, removal, and inspectionChoosing correct filter types and ratingsService intervals for severe duty useDocumenting filter changes on service logsLesson 4Drive belts, accessory belt tensioners, pulleys inspection an replacement triggersDis section explain inspection of drive belts, accessory belt tensioners, an pulleys. Yuh wi learn how fi identify wear, noise sources, an failure risks, an determine when preventive replacement is justified.
Identifying belt cracks, glazing, and frayingMeasuring belt wear with gauge toolsManual and automatic tensioner checksPulley alignment, wobble, and noise testsReplacing belts without damaging componentsPost-replacement recheck and noise diagnosisLesson 5Ignition system: spark plug inspection/replacement, ignition coils an lead checksHere yuh wi study preventive checks fi de ignition system, including spark plugs, coils, an leads. Yuh wi learn inspection, testing, an replacement criteria fi prevent misfires, hard starts, an poor fuel economy.
Spark plug removal and condition readingGap measurement and correct torqueCoil primary and secondary testsInspecting leads, boots, and routingCommon ignition-related drivability symptomsRecommended replacement intervals and partsLesson 6Tires, wheel bearings, alignment, an suspension (shocks, springs, bushings) inspection proceduresHere yuh wi study inspection procedures fi tires, wheel bearings, alignment, an suspension components such as shocks, struts, springs, an bushings. Focus is pon safety, tire wear patterns, an ride an handling issues.
Tire tread depth, wear pattern, and ageChecking tire pressures and load ratingsWheel bearing play, noise, and seal checksVisual inspection of shocks and strutsSpring, bushing, and joint wear checksBasic alignment indicators and road testLesson 7Brake system: pads, rotors, calipers, lines, parking brake, ABS sensor checksDis section explain systematic brake inspections, including pads, rotors, calipers, hydraulic lines, parking brake, an ABS sensors. It focus pon wear limits, test methods, common faults, an safe service practices.
Measuring pad thickness and wear patternsRotor runout, thickness, and surface checksCaliper slide, piston, and seal inspectionBrake hose, hard line, and leak inspectionParking brake travel and holding testsABS sensor, wiring, and tone ring checksLesson 8Engine oil an oil filter: checking level, contamination, correct spec an change criteriaDis section cover engine oil an filter maintenance, including level checks, contamination signs, viscosity an specification verification, an change criteria based pon mileage, time, an operating conditions.
Checking oil level, color, and odorIdentifying fuel, coolant, or metal contaminationSelecting correct oil grade and specificationOil filter type, fitment, and bypass functionService intervals and severe duty factorsResetting maintenance reminders correctlyLesson 9Lighting, wipers, seals, an body corrosion inspection checklistYuh wi learn how fi inspect exterior an interior lighting, wiper systems, weather seals, an body corrosion. De section emphasize visibility, water intrusion prevention, an early rust detection fi preserve safety an value.
Headlamp, brake, and signal lamp testsLens condition, aim, and beam pattern checksWiper blade, arm, and washer operationDoor, trunk, and glass weather seal checksUnderbody and wheel arch rust inspectionRust treatment and protection strategiesLesson 10Cooling system: coolant level, condition, hoses, thermostat, water pump checksYuh wi learn how fi evaluate coolant level, mixture, an condition, an inspect hoses, thermostat, radiator, an water pump. De section stress leak detection, overheating prevention, an correct coolant service procedures.
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 an replacement intervalsHere yuh wi learn how fi inspect, sample, an replace key automotive fluids, including transmission, brake, power steering or EPAS, an differential oils. Emphasis is pon intervals, contamination signs, an correct fluid specifications.
Identifying correct OEM fluid specificationsTransmission fluid level, color, and odor checkBrake fluid moisture testing and flushing stepsPower steering and EPAS fluid inspectionsDifferential and final drive oil serviceRecording fluid changes and service history
