Texas Emissions Inspections Exam Questions with Correct Answers Already Passed
Why are we concerned about motor vehicle pollution? - Answers Motor vehicles emit toxic air pollutants
Motor vehicles contribute to the formation of ground level ozone
A "typical" vehicle emits a half-ton of air pollution annually
A malfunctioning vehicle emits many times the amount of pollution of a "typical" vehicle
True or False: Motor vehicles are the largest source of ground-level ozone (or smog) in Texas. - Answers
True
What is the primary purpose of OBDII? - Answers To insure that vehicles emit the minimum amount of
pollutants through their useful life.
What does the OBD II inspection do? - Answers Monitors all components that affect vehicle emissions.
Detect and record malfunctions of the components that affect vehicle emissions.
Checks the results of the self-tests that occur while the vehicle is driven prior to the time of inspection.
What model year and weight requirement are OBDII systems required in gasoline powered vehicles? -
Answers 1996 or newer/8,500 pounds or less
True or False: Each vehicle make requires a different Diagnostic Link Connector, and you are responsible
for ensuring your inspection station has each tool needed for all vehicle makes. - Answers False
Where can you locate the diagnostic connector in most vehicles? - Answers Beneath the instrument
panel, near the steering column
What is the name of the amber colored warning light that is illuminated by the OBD system when a
malfunction occurs? - Answers Malfunction Indicator Light
When severe misfire occurs that could damage the catalytic converter, what does the MIL do? - Answers
Flashes on and off once per second
What two checks are required of the MIL:
i. Key-On Engine Off (KOEO)
ii. Key-On Engine Running (KOER)
iii. Key-Off Engine Off (KOEO)
iv. Key-Off Engine Off (KOEO) - Answers i and ii
What are you checking for during the Key On, Engine Off (KOEO) inspection? - Answers That the MIL
comes on when the ignition key is turned to the KOEO position
Why are we concerned about motor vehicle pollution? - Answers Motor vehicles emit toxic air pollutants
Motor vehicles contribute to the formation of ground level ozone
A "typical" vehicle emits a half-ton of air pollution annually
A malfunctioning vehicle emits many times the amount of pollution of a "typical" vehicle
True or False: Motor vehicles are the largest source of ground-level ozone (or smog) in Texas. - Answers
True
What is the primary purpose of OBDII? - Answers To insure that vehicles emit the minimum amount of
pollutants through their useful life.
What does the OBD II inspection do? - Answers Monitors all components that affect vehicle emissions.
Detect and record malfunctions of the components that affect vehicle emissions.
Checks the results of the self-tests that occur while the vehicle is driven prior to the time of inspection.
What model year and weight requirement are OBDII systems required in gasoline powered vehicles? -
Answers 1996 or newer/8,500 pounds or less
True or False: Each vehicle make requires a different Diagnostic Link Connector, and you are responsible
for ensuring your inspection station has each tool needed for all vehicle makes. - Answers False
Where can you locate the diagnostic connector in most vehicles? - Answers Beneath the instrument
panel, near the steering column
What is the name of the amber colored warning light that is illuminated by the OBD system when a
malfunction occurs? - Answers Malfunction Indicator Light
When severe misfire occurs that could damage the catalytic converter, what does the MIL do? - Answers
Flashes on and off once per second
What two checks are required of the MIL:
i. Key-On Engine Off (KOEO)
ii. Key-On Engine Running (KOER)
iii. Key-Off Engine Off (KOEO)
iv. Key-Off Engine Off (KOEO) - Answers i and ii
What are you checking for during the Key On, Engine Off (KOEO) inspection? - Answers That the MIL
comes on when the ignition key is turned to the KOEO position
