Question 1

Variable Valve Timing (VVT)

Accepted Answer

A system that adjusts valve lift, duration, and timing to optimize engine performance, fuel efficiency, and emissions control.

Question 2

CAN Bus

Accepted Answer

Controller Area Network; a vehicle communication system that enables various vehicle modules to communicate with one another.

Question 3

Mass Air Flow (MAF) Sensor

Accepted Answer

Measures the amount of air entering the engine to calculate the proper air-fuel mixture for optimal combustion.

Question 4

Oxygen Sensor (O2)

Accepted Answer

Monitors the exhaust gas to determine the air-fuel mixture and adjust the fuel injection system accordingly.

Question 5

Throttle Position Sensor (TPS)

Accepted Answer

Detects throttle position and sends a signal to the ECU to adjust fuel injection and ignition timing.

Question 6

Ignition Control Module (ICM)

Accepted Answer

Controls the ignition system, including spark timing and coil activation.

Question 7

Knock Sensor

Accepted Answer

Detects engine knocking or pinging and sends a signal to the ECU to adjust ignition timing.

Question 8

Exhaust Gas Recirculation (EGR) Valve

Accepted Answer

Recirculates exhaust gases into the intake manifold to reduce combustion temperatures and NOx emissions.

Question 9

Evaporative Emissions Control (EVAP) System

Accepted Answer

Captures and stores fuel vapor to prevent it from being released into the atmosphere.

Question 10

Fuel Injector

Accepted Answer

Electronically controlled valve that sprays fuel into the engine's intake manifold or combustion chamber.

Question 11

Direct Injection

Accepted Answer

A fuel injection system where fuel is injected directly into the combustion chamber, increasing efficiency and power output.

Question 12

Continuously Variable Transmission (CVT)

Accepted Answer

A transmission that uses a belt or chain to provide an infinite number of gear ratios.

Question 13

Limited Slip Differential (LSD)

Accepted Answer

A differential that limits the speed difference between the two driven wheels to improve traction and handling.

Question 14

Anti-lock Braking System (ABS)

Accepted Answer

A system that prevents the wheels from locking during hard braking, maintaining steering control.

Question 15

Electronic Stability Control (ESC)

Accepted Answer

A system that detects and reduces loss of traction by applying brakes to individual wheels and/or reducing engine power.

Question 16

Suspension Geometry

Accepted Answer

The arrangement and alignment of suspension components that affect vehicle handling and tire wear.

Question 17

MacPherson Strut

Accepted Answer

A type of suspension system that combines the coil spring and shock absorber into a single unit.

Question 18

Double Wishbone Suspension

Accepted Answer

A suspension system that uses two control arms per wheel to provide superior control of wheel movement.

Question 19

Sway Bar

Accepted Answer

A torsion bar that connects the suspension components on opposite sides of a vehicle to reduce body roll during cornering.

Question 20

Electronic Power Steering (EPS)

Accepted Answer

A power steering system that uses an electric motor to provide assistance, improving efficiency and reducing weight.

Question 21

Brake Bias

Accepted Answer

The distribution of braking force between the front and rear brakes, affecting vehicle stability during braking.

Question 22

Tire Aspect Ratio

Accepted Answer

The ratio of the tire's sidewall height to its width, affecting ride comfort and handling.

Question 23

Tire Speed Rating

Accepted Answer

A letter code indicating the maximum speed a tire is designed to sustain for a prolonged period.

Question 24

Wheel Alignment

Accepted Answer

The adjustment of a vehicle's suspension components to ensure proper tire contact with the road and even tire wear.

Question 25

Timing Belt

Accepted Answer

A toothed belt that synchronizes the rotation of the crankshaft and camshaft(s), ensuring proper valve timing.

Question 26

Timing Chain

Accepted Answer

A chain that performs the same function as a timing belt but is more durable and requires less frequent replacement.

Question 27

Serpentine Belt

Accepted Answer

A single, continuous belt that drives multiple engine accessories, such as the alternator, power steering pump, and air conditioning compressor.

Question 28

Water Pump

Accepted Answer

A device that circulates coolant through the engine and radiator to maintain optimal operating temperature.

Question 29

Thermostat

Accepted Answer

A temperature-sensitive valve that regulates coolant flow

Question 30

Thermostat

Accepted Answer

A temperature-sensitive valve that regulates coolant flow between the engine and radiator to maintain optimal operating temperature.

Question 31

Radiator

Accepted Answer

A heat exchanger that dissipates engine heat by circulating coolant through tubes and fins exposed to the airflow.

Question 32

Transmission Cooler

Accepted Answer

A heat exchanger that dissipates heat from the transmission fluid, prolonging its life and maintaining optimal performance.

Question 33

Drive Axle

Accepted Answer

A shaft that transmits torque from the transmission or differential to the drive wheels.

Question 34

Constant Velocity (CV) Joint

Accepted Answer

A flexible joint that allows the drive axle to transmit power smoothly through a range of angles while maintaining constant rotational speed.

Question 35

Universal Joint (U-Joint)

Accepted Answer

A joint that allows for angular movement between two shafts, typically used in rear-wheel-drive vehicle drivelines.

Question 36

Wheel Bearing

Accepted Answer

A set of ball or roller bearings that allow the wheel hub to rotate smoothly on the axle.

Question 37

Brake Caliper

Accepted Answer

A hydraulic component that clamps the brake pads against the rotor to slow or stop the vehicle.

Question 38

Brake Master Cylinder

Accepted Answer

A hydraulic component that converts the force applied to the brake pedal into hydraulic pressure for the brake system.

Question 39

Brake Booster

Accepted Answer

A vacuum or hydraulic device that multiplies the force applied to the brake pedal, reducing the effort required for braking.

Question 40

Brake Rotor

Accepted Answer

A disc that connects to the wheel hub and is clamped by the brake pads, converting kinetic energy into heat to slow or stop the vehicle.

Question 41

Brake Drum

Accepted Answer

A cylindrical component that houses the brake shoes and is connected to the wheel hub, providing an internal braking surface.

Question 42

Brake Shoe

Accepted Answer

A curved friction material that presses against the brake drum, converting kinetic energy into heat to slow or stop the vehicle.

Question 43

Brake Pad

Accepted Answer

A flat friction material that clamps against the brake rotor, converting kinetic energy into heat to slow or stop the vehicle.

Question 44

Brake Fluid

Accepted Answer

A hydraulic fluid that transmits force from the brake master cylinder to the brake calipers or wheel cylinders.

Question 45

Brake Bleeding

Accepted Answer

The process of removing air from the brake hydraulic system to ensure consistent brake pedal feel and performance.

Question 46

Fuel Pressure Regulator

Accepted Answer

A device that maintains a constant fuel pressure for the fuel injectors, providing a consistent fuel supply.

Question 47

Fuel Pump

Accepted Answer

An electric or mechanical device that supplies fuel from the tank to the fuel injectors.

Question 48

Fuel Filter

Accepted Answer

A component that removes contaminants from the fuel supply to protect the fuel injectors and engine.

Question 49

Spark Plug

Accepted Answer

An electrical device that produces a spark to ignite the air-fuel mixture in the combustion chamber.

Question 50

Ignition Coil

Accepted Answer

A transformer that converts low voltage from the battery to high voltage for the spark plugs, creating the spark necessary for combustion.

Advanced Red Seal Exam Automotive Service Technician Flash Card Set