Lesson 1Battery, charging system: battery health tests, alternator charging checks, starter inspectionConcentrates on testing battery health, checking alternator output, basic starter inspection. Explains voltage measurements, load testing, parasitic drain basics, charging issues impact on starting, driving in Eritrea.
Open circuit voltage, state of chargeBattery load, conductance testingAlternator output, ripple checksDrive belt influence on chargingStarter current draw, voltage dropParasitic drain basics, simple testsLesson 2Spark plugs, ignition parts: lifespan, worn plug symptoms, effect on cold start, powerDetails spark plug types, heat ranges, service life, plus coils, leads. Covers worn plug symptoms, misfire diagnosis, effects on cold start, fuel economy, power, correct gapping, torque in Eritrea.
Spark plug types, materials, heat rangeRecommended plug service intervalsReading plug deposits, colour patternsIgnition coil, wire basic checksCold start, misfire, power complaintsCorrect plug gapping, torque methodLesson 3Coolant, cooling system checks: coolant condition, hoses, thermostat function, overheating preventionCovers coolant types, mixture ratios, condition checks, plus hoses, radiator, water pump, thermostat basics. Explains overheating prevention, pressure cap role, safe service in Eritrean climates.
Coolant types, colours, compatibilityChecking coolant level, freeze protectionRadiator, hoses, clamp inspectionsThermostat function, failure symptomsWater pump leaks, noise indicatorsPressure cap testing, safety rulesLesson 4Brake fluid, pads, rotors inspection, replacement triggers for safety, noise preventionExplains brake fluid condition checks, pad, rotor inspection, common replacement triggers. Stresses safety, fade resistance, noise prevention, basic measurement tools, service guidelines in Eritrea.
Brake fluid types, moisture testingVisual pad wear, thickness checksRotor thickness, runout, scoringBrake noise, pulsation, pull causesBasic brake service safety proceduresWhen to recommend full brake overhaulLesson 5Air filter, cabin filter: effect on engine breathing, fuel trims, HVAC performanceExplains engine air filters, cabin filters impact on breathing, fuel trims, HVAC performance, component life. Covers inspection, replacement intervals, filter types, diagnosing restrictions, contamination in Eritrea.
Engine air filter types, ratingsAir filter inspection, replacement stepsEffects of clogged filters on fuel trimsCabin filter role in HVAC, air qualityCabin filter access points, toolsOdour, dust, allergy complaintsLesson 6Transmission, clutch basic checks (manual): fluid level/condition, clutch pedal free play, basic inspectionIntroduces basic checks for manual transmissions, clutches. Covers fluid level, condition, leaks, clutch pedal free play, engagement feel, simple road test observations for early fault detection in Eritrea.
Manual transmission fluid type, levelFluid condition, contamination, leaksClutch pedal free play, height checksEngagement point, slip evaluationNoise diagnosis: release, pilot bearingsRoad test checks for shift qualityLesson 7Belts, hoses condition: serpentine/accessory belt inspection, timing belt guidance where applicableCovers inspecting serpentine, accessory belts, timing belt guidance where fitted. Explains wear patterns, noise diagnosis, tension checks, replacement intervals, belt failure risks for engine in Eritrea.
Serpentine belt wear patterns, glazingAccessory belt tension, alignment checksTiming belt interval, interference enginesBelt noise diagnosis: squeal, chirp, rumbleCoolant, heater hose visual inspectionsHose clamp types, correct tighteningLesson 8Basic service items often missed: fuel filter, PCV valve, wiper blades, tyre condition, pressuresHighlights often missed service items like fuel filters, PCV valves, wiper blades, tyres. Explains impact on driving, emissions, visibility, tyre wear, overall safety, comfort in Eritrean roads.
Fuel filter role, restriction symptomsPCV valve function, clogging effectsWiper blade wear, streak diagnosisWasher system checks, fluid choiceTyre tread depth, wear pattern reviewTyre pressure, load, TPMS basicsLesson 9Engine oil, oil filter: replacement intervals, oil grades, why affects wear, starting/performanceExplains engine oil roles, viscosity grades, service intervals. Covers oil filter function, selection, replacement steps, oil condition impact on wear, starting, fuel economy, turbo life in Eritrea.
Oil viscosity grades, temperature effectsManufacturer oil, interval specificationsChecking oil level, contamination signsOil filter types, bypass valve functionSafe oil, filter change proceduresOil choice impact on wear, starting
