Question 1

The ........monitor requires that the oxygen sensor monitor to run and pass first.

Accepted Answer

catalyst efficiency

Question 2

A ........satisfies the requirements of a specific monitor to run.

Accepted Answer

trip

Question 3

When discussing OBD systems: Technician A says the main difference between OBD I and OBD II are the trouble code standards.Technician B says OBD II systems must all operate in exactly the same way to help with diagnostics.Who is correct?

Accepted Answer

D

Question 4

When the ECM first detects a fault, a ........code is set.

Accepted Answer

The answer of When the ECM first detects a fault,...

Question 5

Technician A says Mode 6 data is the most commonly used section of OBD II because it provides detailed monitor test results.Technician B says Mode 6 data may not be interpreted by some scan tools.Who is correct?

Accepted Answer

The answer of Technician A says Mode 6 data is...

Question 6

A vehicle equipped with OBD II has an illuminated MIL: Technician A says the code can be checked using generic mode.Technician B says only generic codes will display using a generic or Global OBD II scan tool.Who is correct?

Accepted Answer

Technician A is correct. The code can be checked using generic mode, which is the first step in diagnosing the problem. Technician B is incorrect because while generic codes will display using a generic or Global OBD II scan tool, there are also manufacturer-specific codes that will not display using a generic tool.

Question 7

Technician A says that if a misfire code is set, certain monitors will not run.Technician B says that a current misfire code may cause the MIL to flash.Who is correct?

Accepted Answer

Technician A is correct because certain monitors require a certain amount of drive time with no misfires in order to run, so if a misfire code is set, those monitors may not complete. Technician B is also correct because if a current misfire is detected, the engine may be experiencing a significant problem that could potentially cause damage, so the MIL will flash to alert the driver to the issue.

Question 8

Which of the following is not one of the continuous monitors in OBD II systems?

Accepted Answer

The answer of Which of the following is not one...

Question 9

For pending code to be erased on its own, ........key starts must occur without a repeat of the fault condition.

Accepted Answer

The answer of For pending code to be erased on...

Question 10

To determine if a particular component is operating correctly, the ECM can perform a(n)test by taking control of the component.

Accepted Answer

The answer of To determine if a particular component is...

Quiz 24: Engine Performance Service