ASE Task Lists › B5
The ASE B5 Task List
All 121 official tasks on the Mechanical and Electrical Components test, as ASE publishes them. This is exactly what you are graded on.
What is actually on the ASE B5 test
ASE publishes a task list for every certification: the specific jobs a technician is expected to be able to do. The test is built from that list, and the number of questions in each content area is fixed. Below is every task on the official list, together with how many questions each content area carries so you can see where your study time pays off.
50 scored questions across 8 content areas and 121 tasks. The live test also includes a small number of unscored pilot questions that do not count toward your result.
Jump to a content area
Suspension and Steering
Identify and replace one-time use suspension fasteners.
Inspect, diagnose, and replace rack and pinion steering gear, inner tie rod ends, and bellows boots.
Inspect, diagnose, remove, and replace power steering pump, pulley, belts, hoses, fittings, and pump mounts. Identify fluid type specific to the vehicle; perform bleeding procedure if required.
Inspect and diagnose steering gear (non-rack and pinion types) noises, binding, uneven turning effort, looseness, hard steering and lubricant leakage problems; determine needed actions.
Inspect and diagnose rack and pinion steering gear mount bushings, brackets, noises, vibration, looseness, hard steering, and lubricant leakage problems; ensure proper mounting position; determine needed actions.
Inspect and diagnose sector shaft; inspect and replace pitman arm.
Inspect, diagnose, and replace relay rod (center link/intermediate rod/drag link).
Inspect, diagnose, remove and/or replace idler arms, and inspect mounting locations; determine needed actions.
Inspect, diagnose, remove, and replace tie rod sleeves, clamps, and tie rod ends.
Inspect, diagnose, remove, and replace steering linkage damper.
Inspect, diagnose, remove, and replace upper and lower control arms, strut rods, and bushings.
Inspect, diagnose, remove, and replace upper and lower ball joints.
Inspect, diagnose, remove, and replace steering knuckle/spindle/hub and bearing assemblies.
Inspect, diagnose, remove, and replace coil springs and spring insulators (silencers).
Inspect, diagnose, replace, and/or adjust front suspension torsion bars; inspect mounts.
Inspect, diagnose, and replace strut cartridge or assembly, upper bearing, and mount.
Inspect, diagnose, remove, and replace rear suspension transverse links, control arms, bushings, and mounts.
Inspect, diagnose, remove, and replace rear suspension leaf spring(s), leaf spring insulators (silencers), shackles, brackets, bushings, and mounts.
Inspect and diagnose front and/or rear axle assemblies for damage and misalignment; remove, repair, or replace as required.
Inspect, diagnose, and replace shock absorbers, load-leveling devices, air springs, and associated lines, fittings, and components.
Inspect and diagnose, adjust, or replace components (including sensors, switches, actuators, and control units) of electronically controlled suspension systems).
Measure vehicle ride height; determine needed actions.
Inspect, remove, replace, and align front and rear subframes (including engine cradles and axle carriers). Inspect mounting locations, bushings and isolators; determine needed actions.
Inspect and diagnose steering column damage, looseness, and binding problems (including positioning mechanisms, collapsible columns, and steering wheels), inspect mounting locations; determine needed actions.
Inspect, diagnose, and replace steering shaft U-joint(s) and flexible coupling(s).
Diagnose vehicle noise, vibration, and harshness (NVH) problems (including suspension, tire, and driveline); determine needed actions.
Diagnose vehicle wandering, pulling, hard steering, bump steering, memory steering, torque steering, and steering return problems; determine needed actions.
Measure front and rear wheel camber; determine needed repairs or adjustments.
Measure caster; determine needed repairs or adjustments.
Measure front and rear wheel toe; determine needed repairs or adjustments.
Identify toe-out-on-turns (turning radius) and related problems; determine needed actions.
Identify SAI (steering axis inclination), included angle, and scrub radius related problems; determine needed actions.
Identify thrust angle related problems; determine needed repairs or adjustments.
Measure wheel setback and wheel base; determine needed actions.
Perform pre-alignment inspection; identify tire condition, size, and application, and check air pressure; determine needed actions.
Inspect wheels, tires and pressure monitor sensors (TPM) for damage; balance tires; determine needed actions.
Inspect and diagnose wheel, hub, and axle bearing for damage; determine needed action.
Inspect and diagnose front and rear stabilizer (anti-sway bar) systems; determine needed actions.
Perform initialization, calibration, or reprogramming procedures as required.
Verify effectiveness of suspension and steering repairs.
Inspect and diagnose, adjust or replace components (including sensors, switches, actuators, and control units) of steering systems (including electronically controlled hydraulic and electronically assisted steering systems).
Electrical
Measure voltage in electrical wiring circuits with a DMM (digital multimeter); determine needed actions.
Measure continuity and resistance in electrical wiring circuits and components with a DMM (digital multimeter); determine needed actions.
Check electrical circuits, wiring, connectors, terminals, terminal tension, sockets, and routing; determine needed action.
Inspect, test, and replace fusible links, circuit breakers, and fuses.
Inspect, test, and replace relays and solenoids.
Inspect, test, repair and/or replace electrical circuit switches.
Inspect, test, and replace electrical motors.
Identify personal safety precautions, safe battery handling. Inspect, test, clean, charge, and replace battery, battery cables, connectors, and clamps.
Identify programmable electrical/electronic components and modules; determine needed action.
Inspect, test, remove, and replace alternator/generator, drive belts, pulleys, tensioners, and fans; inspect and adjust alignment.
Align/aim headlamps and fog/driving lamps.
Inspect, test, adjust, and repair or replace components of exterior lighting systems; verify system operation.
Inspect, test, and repair or replace components of interior lighting systems; verify system operation.
Inspect, test, repair or replace horn system components; verify system operation.
Inspect, test, repair or replace components of wiper/washer systems; verify operation.
Inspect, test, repair or replace components of power window systems; verify operation.
Inspect, test, repair or replace components of power seats, heated/cooled seats; verify safety and comfort operation.
Inspect, test, repair or replace components of electrical, mechanical door and hatch/trunk locks; verify operation.
Inspect, test, repair or replace components of power sliding doors and power liftgates; verify system operation.
Inspect, test, repair or replace components of keyless lock/unlock devices and security systems; verify system operation.
Inspect, test, repair or replace electrical and mechanical components of sunroofs or convertible/ retractable tops; verify system operation.
Inspect, test, repair or replace electrically heated mirrors and back glass; verify operation.
Inspect, test, repair or replace electrical/electronic antennas; verify operation.
Inspect, test, repair or replace electrical interior and exterior mirrors; verify operation.
Retrieve diagnostic trouble codes (DTCs); verify malfunction indicator lamp (MIL) status; record freeze frame data information; determine needed action.
Identify personal safety precautions, safe battery handling, and high voltage system diagnostic and repair considerations associated with hybrid/electric and alternative fuel vehicles.
Inspect, test and diagnose operation of advanced driver assistance systems (ADAS) (such as: collision avoidance and mitigation, active cruise control, back-up camera/sensors, lane departure, lane keeping and park assist).
Perform initialization, calibration or synchronization procedures.
Measure voltage drop in electrical circuits with a digital multimeter (DMM); determine repair procedure.
Determine vehicle connectivity; determine needed actions.
Measure current flow (amperage) in electrical wiring circuits with a digital multi-meter (DMM); determine needed action.
Research applicable vehicle and service information, such as vehicle service history, service precautions, technical service bulletins, and service campaigns/recalls.
Inspect, test, calibrate and verify vehicle features and systems incorporated in fixed glass.
Brakes
Inspect brake calipers, wheel cylinders, hoses, and fittings for leaks, dents, kinks, rust, cracks or wear; tighten fittings and supports; replace brake lines (double flare and ISO types), hoses, fittings, seals, and supports.
Inspect/test brake fluid; determine proper fluid type for application.
Bleed (manual, pressure, vacuum, or surge) and/or flush hydraulic brake system; verify system operation.
Inspect, remove, and replace disc brake, pads, rotors and/or drums and shoes; adjust as necessary.
Inspect and replace wheel studs and fasteners. Reinstall wheels and torque fasteners.
Inspect brake caliper mounts and slides for wear and damage; determine needed actions.
Inspect parking brake system operation; repair or adjust as necessary; verify proper operation.
Identify, test, and replace ABS wheel speed sensor and components.
Identify, repair or replace traction control and electronic stability control components; verify operation.
Heating and Air Conditioning
Recover, recycle and recharge A/C system; identify refrigerant and oil type, determine oil and refrigerant capacities; leak test and check high and low side gauge readings; verify system operation.
Inspect, adjust, and replace A/C compressor drive belts; check pulley tensioner alignment and clutch operation.
Inspect, remove, and replace A/C compressor and clutch.
Inspect, repair or replace A/C system mufflers, hoses, lines, fittings, pressure switches, pressure sensors, valves, and seals.
Verify A/C condenser air flow and cooling fan operation.
Inspect, test, and replace A/C system condenser, mountings, seals, and deflectors.
Remove and replace receiver/drier or accumulator/drier.
Remove and replace evaporator; inspect evaporator housing and water drain.
Inspect, test, repair or replace heating, ventilating, and A/C system, electrical/vacuum and mechanical controls, sensors and actuators.
Inspect, test, clean, and repair or replace heating, ventilating, and A/C ducts, housing(s), doors, hoses, filters, and outlets.
Inspect, repair or replace heating system hoses, lines, fittings, seals and components; verify operation.
Perform initialization, calibration, or synchronization procedures following A/C system repairs if required.
Inspect, test, remove or replace A/C compressors (fixed displacement, variable displacement, and electric).
Engine Cooling Systems
Inspect, test, remove, and replace radiator, mounts, pressure cap, coolant recovery system, hoses, seals, and water pump.
Remove and replace thermostat, by-pass, and housing.
Recover, flush, bleed, and refill system with proper coolant, verify protection level.
Inspect, remove, and replace electrical/mechanical cooling fan components; verify operation.
Inspect, remove, and replace auxiliary oil/fluid coolers and components.
Drive Train
Inspect, remove, and replace powertrain assembly and components; inspect, replace, and align powertrain mounts, subframes, and engine cradles.
Inspect, remove, and replace electronic components, wires, terminals, terminal tension, and connectors.
Inspect, remove, replace, and adjust electrical, mechanical or hydraulic shift/throttle and clutch components.
Inspect, remove, and replace front and/or rear drive axle assembly.
Inspect, remove, and replace half-shafts and constant velocity (CV) joints, tripod joints, and components.
Inspect, remove, and replace drive shafts, center support bearings, and universal joints.
Inspect, remove, and replace transaxles, transmissions, and transfer cases.
Fuel, Intake and Exhaust Systems
Inspect, remove, and replace exhaust manifold, exhaust pipes, mufflers, converters, sensors, resonators, tail pipes, heat shields, and components.
Inspect, remove, and replace fuel tank, straps, fuel pump, fuel tank filter, rollover valve, fuel cap, fuel filler hose, fuel filler-to-body seal, and inertia switch; inspect and replace fuel lines and hoses; check fuel for contaminants.
Inspect, remove, and replace intake manifold, air cleaner, turbocharger, waste gates, intercooler, hoses, and sensors.
Inspect, remove, and replace canister, filter, sensors, vent, and purge lines of fuel vapor control systems; ensure proper routing.
Perform initialization, calibration, or synchronization procedures.
Inspect, test, replace exhaust after treatment system components and controls.
Restraint Systems
Inspect restraint system mounting areas for damage; repair or replace as needed. Research applicable vehicle service information to determine if components are reusable (fasteners, trim, headrests, and airbags).
Deactivate, inspect, replace, and reactivate supplemental restraint system (SRS) and components; verify system operation readiness.
Inspect, remove, replace, and dispose of deployed and non-deployed airbag(s) and pretensioners; store airbag(s) during vehicle service.
Use diagnostic trouble codes (DTCs) to diagnose and repair the Supplemental Restraint System (SRS), including occupant classification systems (OCS).
Perform initialization, calibration, or synchronization procedures following restraint system repairs.
Inspect, test, remove and replace roll-over protection; verify operation.
Inspect, test, remove and replace pedestrian protection systems; verify operation.
Practice every one of these tasks
The simulator draws from a bank built against this exact task list, in the real Prometric format, and tells you which content areas you are weakest in.
Task lists for the other ASE tests
Every B-Series collision certification, explained the same way.
Task descriptions above are quoted from the task list published by ASE for this certification, reproduced here as a study reference. ASE® is a registered trademark of the National Institute for Automotive Service Excellence, which does not endorse, is not affiliated with, and has not reviewed this site. Always confirm the current task list at ase.com before you sit the test.