Question 1

Battery Load Tester

Accepted Answer

Tool used to test the capacity and performance of a vehicle's battery.

Question 2

Alternator

Accepted Answer

Electrical component that converts mechanical energy into electrical energy to charge the battery and power the vehicle's electrical systems.

Question 3

Starter Motor

Accepted Answer

Electric motor that initiates the engine's rotation to start the vehicle.

Question 4

Ignition Switch

Accepted Answer

Electrical switch that activates the vehicle's ignition system, allowing the engine to start.

Question 5

Crankshaft Position Sensor

Accepted Answer

Sensor that detects the position and rotational speed of the crankshaft to determine ignition timing.

Question 6

Camshaft Position Sensor

Accepted Answer

Sensor that monitors the position and rotational speed of the camshaft to control fuel injection and ignition timing.

Question 7

Throttle Position Sensor

Accepted Answer

Sensor that measures the position of the throttle plate to determine the engine's load and adjust fuel delivery.

Question 8

Mass Air Flow Sensor

Accepted Answer

Sensor that measures the amount of air entering the engine to calculate the appropriate fuel-to-air ratio.

Question 9

Oxygen Sensor

Accepted Answer

Sensor that measures the oxygen content in the exhaust gases to monitor and adjust the air-fuel mixture.

Question 10

Fuel Injector

Accepted Answer

Device that delivers fuel into the combustion chamber in a precise and controlled manner.

Question 11

Fuel Pressure Regulator

Accepted Answer

Device that maintains a consistent fuel pressure within the fuel system.

Question 12

Fuel Pump

Accepted Answer

Electric pump that supplies fuel from the fuel tank to the engine.

Question 13

ABS Control Module

Accepted Answer

Electronic module that controls the operation of the anti-lock braking system.

Question 14

Electronic Stability Control

Accepted Answer

System that helps maintain vehicle stability by applying individual brakes and reducing engine power.

Question 15

Powertrain Control Module

Accepted Answer

Main control unit that manages the operation of the engine and transmission.

Question 16

Body Control Module

Accepted Answer

Electronic module that controls various electrical functions in the vehicle's body.

Question 17

Instrument Cluster

Accepted Answer

Group of gauges and indicators that display vital information about the vehicle's performance and status.

Question 18

HVAC Control Module

Accepted Answer

Module that controls the heating, ventilation, and air conditioning system in the vehicle.

Question 19

Airbag Control Module

Accepted Answer

Module that monitors the vehicle's crash sensors and deploys airbags in the event of a collision.

Question 20

Tire Pressure Monitoring System

Accepted Answer

System that monitors the air pressure in the vehicle's tires and alerts the driver if the pressure is low.

Question 21

Power Window Regulator

Accepted Answer

Mechanism that controls the movement of the power windows.

Question 22

Power Door Lock Actuator

Accepted Answer

Device that locks and unlocks the vehicle's doors electronically.

Question 23

Windshield Wiper Motor

Accepted Answer

Electric motor that drives the windshield wiper blades for clearing rain or debris from the windshield.

Question 24

Headlight Relay

Accepted Answer

Electrical relay that controls the operation of the vehicle's headlights.

Question 25

Turn Signal Switch

Accepted Answer

Switch that activates the turn signal lights to indicate the driver's intention to turn or change lanes.

Question 26

Brake Light Switch

Accepted Answer

Switch that activates the brake lights when the brake pedal is depressed.

Question 27

Ignition Coil

Accepted Answer

Device that transforms low-voltage current from the battery into high-voltage current for ignition.

Question 28

Distributor

Accepted Answer

Component that distributes high-voltage electricity from the ignition coil to the spark plugs.

Question 29

Spark Plug Wire Set

Accepted Answer

Set of insulated wires that deliver high-voltage electricity from the distributor to the spark plugs.

Question 30

Serpentine Belt

Accepted Answer

Belt that drives multiple engine accessories, such as the alternator, power steering pump, and air conditioning compressor.

Question 31

Tensioner Pulley

Accepted Answer

Pulley that maintains proper tension on the serpentine belt to prevent slippage.

Question 32

Cooling System

Accepted Answer

System that regulates the engine's temperature to prevent overheating.

Question 33

Radiator

Accepted Answer

Heat exchanger that removes heat from the engine coolant to keep the engine temperature within the optimal range.

Question 34

Thermostat

Accepted Answer

Valve that regulates the flow of coolant to maintain the engine at its ideal operating temperature.

Question 35

Water Pump

Accepted Answer

Device that circulates coolant throughout the engine to maintain proper cooling.

Question 36

Heater Core

Accepted Answer

Component that transfers heat from the engine coolant to warm the air for the vehicle's interior heating system.

Question 37

Fan Clutch

Accepted Answer

Mechanical clutch that engages and disengages the radiator fan based on engine temperature to control cooling.

Question 38

Engine Control Unit

Accepted Answer

Electronic control unit that manages the engine's fuel injection, ignition timing, and other functions.

Question 39

Knock Sensor

Accepted Answer

Sensor that detects abnormal combustion (knocking) and sends signals to the engine control unit to adjust timing and prevent engine damage.

Question 40

Transmission Control Module

Accepted Answer

Electronic control unit that manages the operation of the vehicle's transmission.

Question 41

Shift Solenoid

Accepted Answer

Device that controls the hydraulic pressure in the transmission to enable smooth gear shifting.

Question 42

Torque Converter

Accepted Answer

Fluid coupling that transfers power from the engine to the transmission and allows the vehicle to come to a stop without stalling the engine.

Question 43

Transfer Case

Accepted Answer

Component in all-wheel drive or four-wheel drive vehicles that transfers power from the transmission to the front and rear axles.

Question 44

Drive Shaft

Accepted Answer

Shaft that transmits torque from the transmission to the rear differential or front wheels in a front-wheel drive vehicle.

Question 45

CV Joint

Accepted Answer

Constant Velocity joint that allows smooth power transfer between the drive shaft and the wheels, even at different angles.

Question 46

Differential

Accepted Answer

Gear assembly that distributes engine power between the wheels while allowing them to rotate at different speeds.

Question 47

Universal Joint

Accepted Answer

Joint that connects the drive shaft to the transmission or differential and allows for flexibility and torque transmission.

Question 48

Power Steering Pump

Accepted Answer

Hydraulic pump that assists in steering by applying pressure to the power steering system.

Question 49

Steering Gear

Accepted Answer

Mechanism that converts the rotational motion of the steering wheel into linear motion to control the direction of the vehicle.

Question 50

Rack and Pinion

Accepted Answer

Steering system that uses a gear mechanism (rack) and a toothed bar (pinion) to convert the rotational motion of the steering wheel into linear motion.

Question 51

Tie Rod

Accepted Answer

Rod that connects the steering gear to the steering knuckle, transmitting motion and allowing steering control.

Question 52

Suspension System

Accepted Answer

System that supports the vehicle's weight, absorbs road shocks, and provides a comfortable ride.

Question 53

Control Arm

Accepted Answer

Component that connects the wheel hub to the frame of the vehicle, allowing for vertical wheel movement and control.

Question 54

Shock Absorber

Accepted Answer

Hydraulic or gas-filled component that dampens the suspension movement and reduces vibrations for a smoother ride.

Question 55

Strut

Accepted Answer

Structural component that combines the functions of a shock absorber and a suspension support.

Question 56

Stabilizer Bar

Accepted Answer

Bar that connects the left and right suspension components to reduce body roll and improve stability during cornering.

Question 57

Wheel Bearing

Accepted Answer

Bearing assembly that allows the wheels to rotate smoothly and supports the weight of the vehicle.

Question 58

Brake Caliper

Accepted Answer

Device that houses the brake pads and applies pressure to the rotor to create friction and slow down or stop the vehicle.

Question 59

Brake Rotor

Accepted Answer

Disc-shaped component that rotates with the wheel and provides a surface for the brake pads to create friction and slow down the vehicle.

Question 60

Brake Master Cylinder

Accepted Answer

Hydraulic component that converts the force applied to the brake pedal into hydraulic pressure to activate the brakes.

Question 61

ABS Sensor

Accepted Answer

Sensor that monitors the rotational speed of the wheels and sends signals to the ABS control module to prevent wheel lock-up during braking.

Question 62

Parking Brake

Accepted Answer

Mechanism that mechanically locks the rear wheels to prevent the vehicle from rolling when parked.

Question 63

Fuel Filter

Accepted Answer

Filter that removes impurities and contaminants from the fuel before it reaches the engine.

Question 64

EGR Valve

Accepted Answer

Exhaust Gas Recirculation valve that redirects a portion of the exhaust gases back into the engine to reduce emissions.

ASE Collision Repair & Refinish Certification Flashcards: B5 - Mechanical & Electrical Components