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8B Quiz 18

Authored by Daniel Eini

Professional Development

KG - Professional Development

Used 6+ times

8B Quiz 18
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15 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Technician A recommends testing the battery before reprogramming the electronic controlmodule (ECM). Technician B recommends disabling the daytime running lamps whilereprogramming. Who is correct?

Tech A

Tech B

Both

Neither

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Technician A says that a fault in the ground circuit of one of the pictured coils will cause amiss on one cylinder. Technician B says that an open in the power wire will cause the vehicle not to start. Who is correct?

Tech A

Tech B

Both

Neither

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A vehicle that failed the I/M test for excessive NOx emissions will likely have to be tested under what vehicle condition to duplicate the concern?

Idle

Heavy acceleration

Light acceleration

Deceleration

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A poor-quality air filter has been installed in a vehicle, and the MAF sensor is now contaminated. Which code will this condition most likely set?

P0174–system rich

P0171–system lean

P0101–MAF sensor performance

P0131–O2sensor low voltage

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A long-term fuel trim of 20 percent is indicated on the scan tool. Technician A says that this indicates a rich condition. Technician B says that this could be the result of excessive fuel pressure caused by an unapproved aftermarket fuel pressure regulator. Who is correct?

Tech A

Tech B

Both

Neither

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A cracked spark plug will be displayed on the secondary voltage pattern as:

A higher firing line

A lower firing line

A shorter dwell period

A longer dwell period

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

To test the operation of an O2sensor, a vacuum line is removed. The voltage of the sensor should:

Decrease

Increase

Fluctuate rapidly

Show no change

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