SVP Auto Electrician study guide
SVP Auto Electrician · Work through your exam, one topic at a time.
The Skill Verification Program (SVP) Auto Electrician credential is a trade-level assessment for technicians who diagnose, repair and verify the electrical and electronic systems of cars, light commercial vehicles and similar mobile plant. It suits working auto electricians seeking formal recognition of their skills, experienced mechanics moving into electrical specialisation, and workshop staff who need evidence of competence for employers, recruiters or licensing bodies. The SVP Auto Electrician study guide has 7 sections and about 3,274 words.
01Occupational safety, hand tools, test equipment and workshop practice
A 12 V lead-acid battery can deliver 600–1000 A into a spanner dropped across its posts, melting metal and spitting acid. Safety questions are usually about hazard classification and control, so learn the groups: chemical (sulphuric acid, refrigerant, solvents - read the SDS and know the first-aid measures), electrical (short-circuit burns, arcs, stored energy in capacitors, high-voltage traction systems), gas (hydrogen from gassing batteries, exhaust fumes), mechanical (belts, fans, hot exhausts, lift points) and pyrotechnic (SRS airbag modules).
690 words, about 3 min02Electrical and Electronic Fundamentals
Everything in vehicle electrics rests on V = I × R and P = V × I = I²R = V²/R. In series , the current is common, voltages add and resistances add.
355 words, about 2 min03Batteries, Starting Systems and Charging Systems
Learn state of charge from open-circuit voltage after removing surface charge (load for a few seconds or leave to rest): roughly 12.6–12.8 V = 100%, 12.4 V ≈ 75%, 12.2 V ≈ 50%, 12.0 V ≈ 25%, below 11.9 V is discharged. Capacity is rated in Ah and cranking ability in CCA - they are different figures and questions swap them deliberately.
374 words, about 2 min04Lighting and Signalling Systems
Know the families: halogen (tungsten filament, do not touch the glass with bare fingers), LED (low current, often driven by a module or PWM), and HID/xenon (a ballast produces a high-voltage strike, so never work on a live circuit). Many vehicles switch lamps by PWM or by a body control module rather than a mechanical switch, and monitor bulb current so they can flag a failure.
364 words, about 2 min05Wiring Harnesses, Connectors, Terminals and Circuit Protection
Wire is sized by cross-sectional area (mm²) and by AWG, chosen for current capacity and for voltage drop - a common target is no more than about 3% drop on a 12 V circuit, roughly 0.3–0.4 V. Routing matters: harnesses must be clipped, protected from chafe and heat, kept clear of moving parts, and not strained at connectors.
382 words, about 2 min06Body Electrical, Comfort and Convenience Systems
These are the circuits drivers notice first: wipers and washers, power windows, central locking and keyless entry, instrument clusters, horns, mirrors, seats, sunroof and blower motor. Most are now driven by a body control module over a data bus, with local smart motors.
363 words, about 2 min07Fault diagnosis, testing, repair and verification procedures
An ECU reads inputs, applies a strategy and drives outputs. Inputs include analogue voltages (potentiometers, thermistors, MAP, MAF), digital signals (switches, Hall and inductive sensors) and bus messages.
746 words, about 4 min