AUT108 Week 6 Flashcard Engine Management

Front

When cycled very quickly, digital signals can be used to create a(n) _______, similar to the variable control provided by an analog signal.

Back

Varying output control signal

Front

Tech A says that analog signals are continuously variable signals. Tech B says that digital signals are direct on/off signals with no in-between transition. Who is correct?

Back

Both A and B

Front

About how much signal voltage is generated by a throttle position sensor at closed throttle?

Back

1 volt

Front

The rate at which these sound waves reach our ears is called ________.

Back

Frequency

Front

Who is correct regarding potentiometer type sensors and oxygen sensors? Tech A says that potentiometer type sensors use a variable resistance to create a variable voltage signal that corresponds to a specific condition. Tech B says that oxygen sensors are the potentiometer type.

Back

Tech A

Front

In a vehicle, thermistors are used in various sensors related to:

Back

temperature.

Front

Who is correct regarding the oxygen sensor and long-term fuel trims in the engine management system? Tech A says that the oxygen sensor is part of the feedback system for the engine management system. Tech B says that long-term fuel trims that are positive means that the PCM is leaning out the fuel mixture from the base pulse-width setting.

Back

Tech A

Front

In modern vehicles, is the oxygen sensor only positioned in the exhaust pipe after the catalytic converter, and does it provide the electronic body control module (EBCM) with an electrical signal that relates to the amount of oxygen in the exhaust gas?

Back

Neither Tech A nor B

Front

Who is correct regarding the PCM's communication with other electronic control modules and its role as a gateway node?

Back

Both A and B

Front

Which of the following is often used to control other actuators when the computer needs to control a high-current load? Solenoids, Thermistors, Motors, Relays

Back

Relays