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Het Period 2 > 190204a Electronic Fuel Fundimentals > Flashcards

190204a Electronic Fuel Fundimentals Flashcards

1
Q

Sensors, switches, and data links are forms of what?

A

Input devices

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2
Q

A technician can access the ECM through the use of what?

A

A data link connector

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3
Q

Baud rate is what?

A

The speed of communication between control modules

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4
Q

What is the term protocol mean?

A

A common language used between control modules

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5
Q

Typical voltage range of a tps is what?

A

.5-4.5 volts

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6
Q

What is the purpose of engine warning lights

A

The ECM runs warning lights on when there is a problem affecting engine performance

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7
Q

An open in a temperature sensor surface what give what voltage reading

A

Higher then normal voltage

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8
Q

A short in a temperature sensor circuit should give what kind of reading

A

Voltage low

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9
Q

A digital signal can be described as a?

A

A signal that is either on or off.

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10
Q

Why are diagnostic trouble codes generated

A

Due to operation outside a set of stored parameters

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11
Q

Output devices are what?

A

Actuators and displays

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12
Q

Multiplexing is for what purpose?

A

For sharing information between control modules

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13
Q

What is protocol?

A

A common language used in the system

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14
Q

After leaving the ecm voltage goes through what before reaching the sensor?

A

A current limiting resistor

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15
Q

How does a ECM interpret a temp sensor?

A

By reading the voltage drop and comparing it to a predetermined value

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16
Q

A reluctance type sensor reads what?

A

Rpm

17
Q

How does a TPS work?

A

The movement of the pedal generates a variety of voltage signals

18
Q

At full throttle, what kind of voltage could the ECm see through the tps

A

5 volts

19
Q

Why are fault codes logged into the memory

A

So a technician can determine if the problem is isolated or systemic

20
Q

When using the SAE fault code system, the type of failure is determined by what

A

A 2 digit failure mode identifier number

21
Q

What the difference between a hard code and a soft code?

A

Hard codes are active soft codes are stored

22
Q

Positive coefficients temp means what?

A

As temp rises resistance also rises.

23
Q

Negative coefficient of temp means what?

A

As temp rises resistance decreases

24
Q

Converting analog to a digital signal is called what

A

Encoding

Het Period 2 (7 decks)

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