Question 1

The PCM continuously tests the electrical integrity of the system and monitors the EGR flow rate twice per trip.

Accepted Answer

A) True 
 B)False

Question 2

The conventional oxidation catalyst is not capable of converting oxides of nitrogen (NOX).

Accepted Answer

A) True 
 B)False

Question 3

Technician A says the secondary air monitor tests for flow by monitoring the oxygen sensor response. Technician B says the secondary air monitor is run once per drive cycle. Who is correct?

Accepted Answer

A)  A only 
B)  B only 
C)  both A and B 
D)  neither A nor B

Question 4

What could cause the post-oxygen sensor output voltage to be excessively high?

Accepted Answer

The answer of What could cause the post-oxygen sensor output...

Question 5

What are the non-continuous monitors that are only run once per trip?

Accepted Answer

The answer of What are the non-continuous monitors that are...

Question 6

Which monitor is used to detect malfunctions that will affect engine coolant temperature and prevent the engine from reaching normal operating temperature?

Accepted Answer

The answer of Which monitor is used to detect malfunctions...

Question 7

What does OBD II call the specific conditions that must be met before each monitor will run?

Accepted Answer

The answer of What does OBD II call the specific...

Question 8

The EGR monitor is an intrusive test, and the customer may notice an rpm fluctuation while the test is taking place.

Accepted Answer

A) True 
 B)False

Question 9

What sensor is primarily responsible for input information used to monitor the integrity of the catalyst?

Accepted Answer

The answer of What sensor is primarily responsible for input...

Question 10

Which sensor does the PCM use to monitor catalyst efficiency?

Accepted Answer

The answer of Which sensor does the PCM use to...

Question 11

Explain the function of the secondary air injection system monitor.

Accepted Answer

The answer of Explain the function of the secondary air...

Question 12

The oxygen sensor monitor will test for all of the following EXCEPT:

Accepted Answer

A)  sensor light off temperature 
B)  sensor degradation 
C)  sensor switch rate 
D)  sensor response time

Question 13

Which sensor does the EGR System Readiness Test use to monitor for EGR system operation and flow?

Accepted Answer

The answer of Which sensor does the EGR System Readiness...

Question 14

In what year did the EPA introduce the positive crankcase ventilation (PCV) monitor, and what is its function?

Accepted Answer

The answer of In what year did the EPA introduce...

Question 15

If a non-continuous monitor system or component fails the monitor test, what will occur?

Accepted Answer

The answer of If a non-continuous monitor system or component...

Question 16

Which component is used to monitor EGR system operation on some vehicles by the EGR system readiness test?

Accepted Answer

A)  EGR temperature sensor 
B)  mass air flow sensor 
C)  engine coolant temperature sensor 
D)  intake air temperature sensor

Question 17

Technician A says that the EGR system controls and monitors fuel vapors during the refueling process. Technician B says that the EVAP system controls fuel vapor loss during the refueling process as part of the ORVR system. Who is correct?

Accepted Answer

A)  A only 
B)  B only 
C)  both A and B 
D)  neither A nor B

Question 18

Explain the function of the heated oxygen sensor monitor.

Accepted Answer

The answer of Explain the function of the heated oxygen...

Question 19

An evaporative emissions system large leak or no purge flow could be caused by all of the following EXCEPT:

Accepted Answer

A)  a loose or missing crankcase oil filler cap 
B)  a vapor management valve failed closed 
C)  a canister vent failed in the open position 
D)  a loose or missing fuel tank filler cap

Question 20

A vehicle is brought in for repair with the complaint of poor fuel economy. A diagnostic scan tool is attached to the DLC with the vehicle at operating temperature, and the technician determines that the pre-catalyst oxygen sensor voltage is biased high and the injector pulse width is long, and both STFT and LTFT are high. All of the following conditions could cause this EXCEPT:

Accepted Answer

A)  high fuel pressure 
B)  open coolant temperature sensor circuit 
C)  TP sensor voltage fixed high 
D)  MAP sensor output indicates high load condition

Exam 10: Strategies of On-Board Diagnostic Non-Continuous Monitors

The PCM continuously tests the electrical integrity of the system and monitors the EGR flow rate twice per trip.

The conventional oxidation catalyst is not capable of converting oxides of nitrogen (NO_X).

Technician A says the secondary air monitor tests for flow by monitoring the oxygen sensor response. Technician B says the secondary air monitor is run once per drive cycle. Who is correct?

What could cause the post-oxygen sensor output voltage to be excessively high?

What are the non-continuous monitors that are only run once per trip?

Which monitor is used to detect malfunctions that will affect engine coolant temperature and prevent the engine from reaching normal operating temperature?

What does OBD II call the specific conditions that must be met before each monitor will run?

The EGR monitor is an intrusive test, and the customer may notice an rpm fluctuation while the test is taking place.

What sensor is primarily responsible for input information used to monitor the integrity of the catalyst?

Which sensor does the PCM use to monitor catalyst efficiency?

Explain the function of the secondary air injection system monitor.

The oxygen sensor monitor will test for all of the following EXCEPT:

Which sensor does the EGR System Readiness Test use to monitor for EGR system operation and flow?

In what year did the EPA introduce the positive crankcase ventilation (PCV) monitor, and what is its function?

If a non-continuous monitor system or component fails the monitor test, what will occur?

Which component is used to monitor EGR system operation on some vehicles by the EGR system readiness test?

Technician A says that the EGR system controls and monitors fuel vapors during the refueling process. Technician B says that the EVAP system controls fuel vapor loss during the refueling process as part of the ORVR system. Who is correct?

Explain the function of the heated oxygen sensor monitor.

An evaporative emissions system large leak or no purge flow could be caused by all of the following EXCEPT: