Week 6, Chapter 9 - Electronic Powertrain Control Flashcards Preview

OTC - AD Electrical and Electronic Systems > Week 6, Chapter 9 - Electronic Powertrain Control > Flashcards

Flashcards in Week 6, Chapter 9 - Electronic Powertrain Control Deck (15)
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1
Q

What unit of electricity is used as a signal for a computer?

A

Volt

2
Q

What are the four basic computer functions?

A

Input, processing, storage and output

3
Q

All OBD II vehicles use what type of read-only memory?

A

EEPROM

4
Q

the “brain” or “heart” of the computer is the ________.

A

CPU

5
Q

Computer processing speed is measured in ________.

A

Baud rate

6
Q

The SAE term for the vehicle computer is ________.

A

PCM

7
Q

What two things can a vehicle computer actually perform (output)?

A

Turn something on or turn something off

8
Q

Analog signals from sensors are changed to digital signals for processing by the computer through which type of circuit?

A

AD converter

9
Q

Adding or subtracting fuel is known as ________.

A

Fuel trim

10
Q

A ________ is a variable resistor with two outputs.

A

Rheostat

11
Q

The number of times an oxygen sensor changes voltage from high to low in 1 second is know as what?

A

Cross counts

12
Q

True or false?

The resistance of a PTC (positive temperature coefficient) thermistor INCREASES as temperature increases.

A

True

13
Q

True or false?

The resistance of an NTC (negative temperature coefficient) thermistor DECREASES as temperature increases.

A

True

14
Q

When the engine is cold, the fuel mixture must be ________ to prevent stalling and engine stumble. When the engine is warm, the fuel mixture can be ________ to provide maximum fuel economy with the lowest possible exhaust emissions.

A

Richer, Leaner

15
Q

Normal engine vacuum is ________.

A

17-21 in. Hg.