Equipos de Diagnóstico: Tipos, Uso y Mantenimiento en Inglés Técnico

Question 1

¿Cuál de los siguientes NO es un tipo de equipo de diagnóstico utilizado habitualmente en electromecánica de vehículos automóviles?

Accepted Answer

Termopar

Answer

Oscilloscopio

Answer

Analizador de gases

Answer

Multímetro digital

Question 2

¿Qué instrumento permite medir simultáneamente la tensión, la corriente y la resistencia en un circuito eléctrico?

Accepted Answer

Multímetro digital

Answer

Osciloscopio

Answer

Analizador de gases

Answer

Manómetro

Question 3

¿Cuál de los siguientes parámetros se puede medir con un analizador de gases en motores de combustión interna?

Accepted Answer

Nivel de dióxido de carbono

Answer

Presión de aceite

Answer

Voltaje de la batería

Answer

Temperatura del refrigerante

Question 4

¿Cuál de los siguientes pasos NO forma parte del proceso de interpretación de los resultados obtenidos con equipos de diagnóstico?

Accepted Answer

Ignorar valores dentro del rango normal

Answer

Identificar posibles problemas

Answer

Consultar información técnica

Answer

Formular hipótesis y realizar pruebas

Question 5

¿Qué norma regula en España los equipos de diagnóstico utilizados en electromecánica de vehículos automóviles?

Accepted Answer

UNE-EN 15937

Answer

ISO 9001

Answer

SAE J2534

Answer

CEI 60364

Question 6

¿Qué tipo de equipo de diagnóstico es indispensable para diagnosticar averías en los sistemas electrónicos de un vehículo?

Accepted Answer

Escáner OBDII

Answer

Osciloscopio

Answer

Manómetro

Answer

Analizador de gases

Question 7

Al interpretar los resultados obtenidos con equipos de diagnóstico, es fundamental:

Accepted Answer

Considerar el contexto y el historial del vehículo

Answer

Asumir siempre la exactitud de los resultados

Answer

Fiarse únicamente de los valores numéricos

Answer

Despreciar posibles fuentes de error

Question 8

La formación continua es crucial para los técnicos que utilizan equipos de diagnóstico debido a:

Accepted Answer

Los avances tecnológicos demandan conocimientos actualizados

Answer

La sencillez en la interpretación de los resultados

Answer

La facilidad de uso de los equipos de diagnóstico

Question 9

Which diagnostic equipment employs a probe to measure voltage at various points in a circuit?

Accepted Answer

Multimeter

Answer

Scan tool

Answer

Oscilloscope

Question 10

What is the primary purpose of a code reader?

Accepted Answer

To decipher and display diagnostic trouble codes from a vehicle's engine control module

Answer

To measure electrical resistance

Answer

To create test patterns

Question 11

Which of the following is a key responsibility for diagnostic technicians when utilizing diagnostic equipment?

Accepted Answer

Selecting the appropriate equipment for the specific task

Answer

Modifying equipment settings without authorization

Answer

Operating equipment without proper training

Answer

Connecting equipment to unauthorized ports

Question 12

Which symptom is commonly associated with a faulty oxygen sensor?

Accepted Answer

Increased fuel consumption

Answer

Blown fuses

Answer

Excessive engine noise

Answer

Vibrating steering wheel

Question 13

What is a significant advantage of using a scan tool with datalogging capabilities?

Accepted Answer

Enabling analysis of data over time

Answer

Performing firmware updates

Answer

Calibrating other diagnostic tools

Answer

Generating live sensor readings

Question 14

What is the primary function of a pressure gauge in diagnostic testing?

Accepted Answer

Measuring fluid pressure within a system

Answer

Generating diagnostic codes

Answer

Measuring electrical current

Answer

Interpreting waveforms

Question 15

What is the purpose of a diagnostic tree?

Accepted Answer

To guide the technician through a structured series of diagnostic steps based on symptoms

Answer

To calibrate diagnostic equipment

Answer

To generate diagnostic trouble codes

Question 16

Which safety precaution should be followed when using diagnostic equipment?

Accepted Answer

Wearing appropriate protective gear

Answer

Connecting the equipment directly to the battery

Answer

Leaving the engine running

Answer

Disabling the vehicle's airbags

Question 17

What is the appropriate action for a diagnostic technician upon encountering an unfamiliar diagnostic code?

Accepted Answer

Consulting a diagnostic code database or seeking guidance from a more experienced technician

Answer

Ignoring the code if the vehicle appears to be operating normally

Answer

Clearing the code in the hope that it will not reappear

Question 18

¿Cuál de los siguientes NO es un tipo de equipo de diagnóstico utilizado en electromecánica de vehículos?

Accepted Answer

Manómetro

Answer

Escáner

Answer

Medidor de presión de combustible

Answer

Multímetro

Question 19

¿Cuál es la función principal de un analizador de gases de escape?

Accepted Answer

Medir la concentración de gases nocivos en los gases de escape.

Answer

Diagnosticar problemas en el sistema de encendido

Answer

Ajustar la mezcla aire-combustible

Question 20

¿Qué tipo de herramienta se utiliza para leer y borrar códigos de diagnóstico de la ECU del vehículo?

Accepted Answer

Escáner

Answer

Multímetro

Answer

Analizador de gases de escape

Answer

Osciloscopio

Question 21

¿Qué parámetro NO se puede medir con un multímetro?

Accepted Answer

Presión de combustible

Answer

Resistencia

Answer

Intensidad de corriente

Answer

Voltaje

Question 22

¿Qué tipo de señal se utiliza en un osciloscopio para mostrar datos?

Accepted Answer

Señal eléctrica

Answer

Señal hidráulica

Answer

Señal neumática

Answer

Señal mecánica

Question 23

¿Qué factor NO influye en la precisión de una medición realizada con un equipo de diagnóstico?

Accepted Answer

La experiencia del usuario

Answer

El estado del vehículo

Answer

La calibración del equipo

Answer

Las condiciones ambientales

Question 24

¿Qué es un multímetro de pinza?

Accepted Answer

Herramienta que mide corrientes eléctricas sin contacto directo

Answer

Herramienta que mide voltajes y resistencias

Answer

Herramienta que mide presiones y temperaturas

Question 25

What is the primary function of an OBD-II scanner in a vehicle?

Accepted Answer

Reading and interpreting diagnostic trouble codes (DTCs) from the vehicle's Electronic Control Unit (ECU).

Answer

Performing complex engine repairs.

Answer

Controlling the vehicle's speed and acceleration.

Question 26

Which of the following is NOT typically included in a basic diagnostic toolset?

Accepted Answer

A high-pressure fuel pump tester.

Answer

A multimeter.

Answer

A diagnostic scanner.

Answer

A digital oscilloscope.

Question 27

What is the purpose of a live data stream in a diagnostic scanner?

Accepted Answer

Displaying real-time sensor readings and system parameters.

Answer

Recording audio signals from the engine.

Answer

Controlling the vehicle's braking system.

Question 28

Which type of diagnostic equipment is commonly used to analyze engine performance and emissions?

Accepted Answer

An engine analyzer.

Answer

A brake tester.

Answer

A headlight alignment tool.

Answer

A tire pressure monitor.

Question 29

What does the term 'freeze frame' refer to when using a diagnostic scanner?

Accepted Answer

A snapshot of sensor data captured at the moment a fault code is triggered.

Answer

A frozen image of the vehicle's dashboard.

Answer

A software update for the vehicle's ECU.

Question 30

Which of the following is a common cause of a 'P0171' diagnostic trouble code?

Accepted Answer

A malfunctioning oxygen sensor.

Answer

Low tire pressure.

Answer

A broken headlight.

Answer

A worn clutch.

Question 31

How can you ensure accurate results when using a diagnostic scanner?

Accepted Answer

By carefully following the manufacturer's instructions and ensuring the vehicle is in the correct operating condition.

Answer

Ignoring any warning lights or messages displayed by the vehicle.

Question 32

What is the purpose of a calibration procedure when using a diagnostic tool?

Accepted Answer

Adjusting sensor readings to ensure accurate data interpretation.

Answer

Programming new software to the ECU.

Answer

Clearing all existing fault codes from the system.

Question 33

What is a key advantage of using a sophisticated diagnostic tool compared to a basic scanner?

Accepted Answer

Access to a wider range of vehicle systems and more detailed information.

Answer

They are cheaper and easier to use.

Answer

They can automatically fix complex electrical problems.

Question 34

How can you effectively interpret the results obtained from a diagnostic scanner?

Accepted Answer

By analyzing the DTCs, live data, and freeze frame data, and referencing the appropriate service manual.

Answer

By simply looking at the DTCs and assuming the problem is solved.

Question 35

What is the primary function of an OBD-II scanner?

Accepted Answer

To retrieve and display diagnostic trouble codes (DTCs) from the vehicle's computer.

Answer

To measure the voltage of the car battery.

Answer

To adjust the timing of the engine.

Question 36

What does the acronym 'DTC' stand for in automotive diagnostics?

Accepted Answer

Diagnostic Trouble Code

Answer

Diagnostic Test Code

Answer

Digital Transmission Code

Answer

Data Transfer Code

Question 37

Which of the following is NOT a typical feature of a professional-grade diagnostic tool?

Accepted Answer

Ability to program new car keys

Answer

Live data streaming

Answer

Advanced code analysis

Answer

Component actuation

Question 38

What is the main difference between a code reader and a scan tool?

Accepted Answer

A scan tool offers more functionalities, including live data readings and component actuation.

Answer

A code reader is only used for gasoline engines, while a scan tool is used for diesel engines.

Answer

A code reader is more expensive than a scan tool.

Question 39

How can you ensure accurate diagnostic results from an automotive scan tool?

Accepted Answer

Connect the scan tool securely to the vehicle's OBD-II port and follow the manufacturer's instructions for operation.

Answer

Use the scan tool on a variety of different vehicles to gain experience.

Question 40

What is the purpose of a diagnostic chart when interpreting scan tool results?

Accepted Answer

It provides a detailed explanation of each DTC, including possible causes and recommended repair actions.

Answer

It displays the current voltage of the vehicle's battery.

Question 41

Which type of diagnostic tool is particularly useful for analyzing electrical signals and waveforms?

Accepted Answer

Oscilloscope

Answer

Scan tool

Answer

Code reader

Answer

Digital multimeter

Question 42

Why is it important to keep diagnostic equipment clean and calibrated?

Accepted Answer

To ensure accurate readings and prevent damage to the equipment and vehicle.

Answer

To comply with local regulations.

Answer

To make the equipment look more professional.

Question 43

What should you do if you encounter a DTC that you cannot interpret or diagnose?

Accepted Answer

Consult a diagnostic manual or seek assistance from a more experienced technician.

Answer

Ignore the DTC and assume it is not a serious problem.

Answer

Try to clear the DTC by disconnecting the battery.