Odisha CHSE VOC-ITV Four Wheeler Service Technician study guide
Odisha CHSE VOC-ITV Four Wheeler Service Technician · Work through your exam, one topic at a time.
The Odisha CHSE Vocational (ITV) Four Wheeler Service Technician credential is a higher secondary vocational trade qualification for students who intend to inspect, service, diagnose and repair cars and light commercial vehicles. It is aimed at candidates who want a practical, workshop-based route into the motor trade rather than a purely academic science stream, and it also supports progression into apprenticeships, dealership service departments, independent garages and further technical study. The Odisha CHSE VOC-ITV Four Wheeler Service Technician study guide has 10 sections and about 3,036 words.
01Workshop safety, tools and equipment
The CHSE vocational paper checks whether you can set up a bay, select and care for hand and power tools, and control the hazards that actually occur in Indian workshops: vehicle falls, battery gas, fuel vapour, exhaust CO, high-voltage EV cables and rotating parts. Chock wheels and use rated jack stands before going under a vehicle.
352 words, about 2 min02Engine construction, operation and overhaul
This domain tests four-stroke operation, component measurement, assembly clearances and the reason for each step. Four-stroke order: induction, compression, power, exhaust.
294 words, about 1 min03Fuel supply, injection and emission control systems
This domain covers petrol and diesel fuel delivery, air-fuel metering, and the emission hardware fitted to BS-VI vehicles. Petrol MPFI: the pump supplies about 3–4 bar; injector resistance is typically 12–16 Ω; pulse width is the command.
299 words, about 1 min04Cooling and lubrication systems
The exam tests coolant flow, pressure cap, thermostat, fan control, oil pump, filtration and oil pressure diagnosis. The system is pressurised; a 1.1 bar cap raises the boiling point by about 25°C at sea level.
326 words, about 2 min05Clutch, transmission, propeller shaft and differential
This domain examines power flow from flywheel to wheels, clutch operation, manual gearbox overhaul, driveline angles and final drive. Clutch pedal free play is typically 10–20 mm; the release bearing must not carry load when the pedal is released.
299 words, about 1 min06Steering, suspension, wheels and tyres
This domain tests alignment angles, steering geometry, suspension inspection, wheel balance and tyre diagnosis. Camber is vertical tilt; caster is steering-axis tilt; toe is the difference front-to-rear of the wheel planes.
292 words, about 1 min07Braking systems
The paper covers hydraulic principles, drum and disc service, ABS, parking brake and fault diagnosis. Hydraulic pressure is transmitted equally; a larger wheel cylinder or caliper piston gives more force.
283 words, about 1 min08Automotive electrical and electronic systems
The exam tests basic circuit laws, battery, charging and starting, sensors, actuators, multiplexing and safe measurement. In series, current is common and voltage divides; in parallel, voltage is common and current divides.
322 words, about 2 min09Vehicle diagnosis and troubleshooting
This domain tests logical fault-finding: verify the complaint, gather data, test, repair and confirm. Verify the symptom yourself; a rough idle may be a misfire, a mount or an exhaust leak.
284 words, about 1 min10Periodic servicing, vehicle inspection and workshop management
The exam tests service schedules, inspection standards, documentation and workshop organisation. Service intervals follow the OEM schedule, not a fixed 5,000 km for every car.
285 words, about 1 min