ASE B5 Mechanical & Electrical Components study guide
ASE B5 Mechanical & Electrical Components · Work through your exam, one topic at a time.
The ASE B5 Mechanical and Electrical Components credential is one of the ASE collision repair and refinish certifications. It recognizes technicians who can diagnose, repair, and replace the mechanical and electrical systems that support a vehicle's body structure after a collision. The ASE B5 Mechanical & Electrical Components study guide has 7 sections and about 1,930 words.
01Cooling Systems
The cooling system moves heat from the engine to the radiator and heater core. A belt- or electric-driven water pump circulates coolant; the thermostat blocks flow until the engine reaches operating temperature, then opens progressively.
303 words, about 2 min02Electrical Systems
Automotive electrical diagnosis rests on Ohm's law (V = I × R), series and parallel circuits, and voltage-drop testing under load. The battery supplies cranking current; the starter draws hundreds of amps; the alternator recharges at roughly 13.5-14.5 V.
274 words, about 1 min03Brake Systems
Hydraulic brakes use Pascal's law: pressure applied to a confined fluid is transmitted equally in all directions. The master cylinder creates pressure; combination valves, proportioning valves, and ABS modulate it.
289 words, about 1 min04Steering and Suspension Systems
Alignment angles are camber (inward or outward tilt at the top), caster (steering-axis tilt fore or aft), toe (front-to-back difference across the tire), and steering axis inclination. Thrust angle compares the rear axle centerline to the vehicle centerline.
268 words, about 1 min05HVAC Systems
Air conditioning moves heat from the cabin to the outside. The compressor raises refrigerant pressure and temperature; the condenser rejects heat to outside air; the expansion valve or orifice tube drops pressure; the evaporator absorbs cabin heat.
262 words, about 1 min06Engine, Transmission, and Driveline Components
The four-stroke cycle is intake, compression, power, and exhaust. Diagnosis uses compression, cylinder leakdown, vacuum, scan data, and mechanical inspection.
283 words, about 1 min07Restraint Systems (SRS)
The supplemental restraint system includes airbags, seat-belt pretensioners, crash sensors, the sensing and diagnostic module, clockspring, and wiring. The module monitors circuits, stores codes, and commands deployment.
251 words, about 1 min