Question 1

ECU

Accepted Answer

Electronic Control Unit used for managing engine performance and controlling various systems.

Question 2

OBD II

Accepted Answer

On-Board Diagnostics system used to monitor and report vehicle emissions and malfunctions.

Question 3

CAN

Accepted Answer

Controller Area Network, a standardized communication protocol used in modern vehicles.

Question 4

MAP sensor

Accepted Answer

Manifold Absolute Pressure sensor measures the intake manifold pressure.

Question 5

MAF sensor

Accepted Answer

Mass Air Flow sensor measures the amount of air entering the engine.

Question 6

TP sensor

Accepted Answer

Throttle Position sensor detects the position of the throttle plate.

Question 7

IAT sensor

Accepted Answer

Intake Air Temperature sensor measures the temperature of the incoming air.

Question 8

ECT sensor

Accepted Answer

Engine Coolant Temperature sensor monitors the temperature of the engine coolant.

Question 9

O2 sensor

Accepted Answer

Oxygen sensor measures the amount of oxygen in the exhaust gases.

Question 10

EVAP system

Accepted Answer

Evaporative Emission Control system prevents the release of fuel vapors into the atmosphere.

Question 11

VVT

Accepted Answer

Variable Valve Timing adjusts the timing of the intake and/or exhaust valves for optimal performance.

Question 12

PIDs

Accepted Answer

Parameter IDs used to access specific data from the vehicle's onboard computer.

Question 13

Fuel trim

Accepted Answer

Adjustments made to the air-fuel mixture to maintain proper fuel control.

Question 14

Misfire

Accepted Answer

When a cylinder fails to ignite the air-fuel mixture.

Question 15

Catalytic converter

Accepted Answer

Reduces harmful emissions by converting pollutants into less harmful substances.

Question 16

Fuel pressure regulator

Accepted Answer

Controls the fuel pressure in the fuel system.

Question 17

Ignition coil

Accepted Answer

Generates high voltage for the spark plugs.

Question 18

Compression test

Accepted Answer

Measures the compression pressure in each cylinder.

Question 19

Fuel injector

Accepted Answer

Delivers fuel into the intake manifold or directly into the combustion chamber.

Question 20

EGR system

Accepted Answer

Exhaust Gas Recirculation system recirculates a portion of exhaust gases back into the engine.

Question 21

Camshaft position sensor

Accepted Answer

Detects the position of the camshaft(s) for accurate timing control.

Question 22

Knock sensor

Accepted Answer

Detects engine knocking and sends a signal to the ECU.

Question 23

Fuel pump

Accepted Answer

Supplies fuel from the tank to the engine.

Question 24

IAC valve

Accepted Answer

Idle Air Control valve regulates the engine's idle speed.

Question 25

Crankshaft position sensor

Accepted Answer

Detects the position and rotational speed of the crankshaft.

Question 26

Ignition timing

Accepted Answer

Determines when the spark plugs fire in relation to the piston position.

Question 27

PCV valve

Accepted Answer

Positive Crankcase Ventilation valve regulates the flow of crankcase gases.

Question 28

Secondary ignition system

Accepted Answer

Components responsible for delivering high voltage to the spark plugs.

Question 29

Oxygen sensor heater

Accepted Answer

Heats the O2 sensor for faster and more accurate readings during cold starts.

Question 30

Throttle body

Accepted Answer

Controls the airflow into the engine.

Question 31

EVAP canister

Accepted Answer

Stores fuel vapors from the EVAP system temporarily.

Question 32

ETC

Accepted Answer

Electronic Throttle Control replaces the traditional mechanical throttle linkage.

Question 33

I/M readiness

Accepted Answer

Monitors the status of the vehicle's emissions systems for emissions testing.

Question 34

Fuel pressure sensor

Accepted Answer

Measures the fuel pressure in the fuel system.

Question 35

VSS

Accepted Answer

Vehicle Speed Sensor detects the speed of the vehicle.

Question 36

NOx

Accepted Answer

Nitrogen Oxides, harmful pollutants produced during combustion.

Question 37

Fuel trims

Accepted Answer

Short-term and long-term fuel adjustments made by the ECU.

Question 38

Wideband O2 sensor

Accepted Answer

Provides more accurate and detailed oxygen sensor readings.

Question 39

Fuel rail

Accepted Answer

Distributes fuel to the fuel injectors.

Question 40

DTC

Accepted Answer

Diagnostic Trouble Code, a code that indicates a specific problem in the vehicle.

Question 41

EVAP purge solenoid

Accepted Answer

Controls the flow of fuel vapors from the EVAP canister to the engine.

ASE L1 Advanced Engine Performance Flashcards