Deck 24: Engine Performance Service

Question 1

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

Answer 1

catalyst efficiency

Question 2

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

Answer 2

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?

A)Technician A
B)Technician B
C)Both A and B
D)Neither A nor B

Answer 3

D

Question 4

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

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?

A)Technician A
B)Technician B
C)Both A and B
D)Neither A nor B

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?

A)Technician A
B)Technician B
C)Both A and B
D)Neither A nor B

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?

A)Technician A
B)Technician B
C)Both A and B
D)Neither A nor B

Question 8

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

A)Comprehensive fuel control monitor
B)Comprehensive component monitor
C)Misfire monitor
D)Fuel control

Question 9

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

Question 10

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