Question 1

Of what type of emission malfunction does the on-board diagnostics emission monitoring system (OBD II system) alert the driver?

Accepted Answer

The system functions as an on-board diagnostics emissions monitoring system that alerts the driver if a malfunction is detected by the powertrain control module (PCM) that causes the emission levels of the vehicle to exceed 1.5 times (50 percent above) the emission standards for the vehicle.

Question 2

OBD II provides a universal OBD 16-pin DLC for all manufacturers' vehicles since 1990.

Accepted Answer

A) True 
 B)False  False

Question 3

What conditions must be present for an OBD II system to illuminate the malfunction indicator light for a component problem?

Accepted Answer

The MIL will only be illuminated when the component has malfunctioned or is clearly performing outside design parameters or if emission levels will exceed 1.5 times the FTP levels.

Question 4

When a DTC is set, the PCM also stores the operating parameters of the emission control system at the time of the event in a data program called:

Accepted Answer

A)  freeze frame 
B)  system readiness monitor 
C)  diagnostic trouble code 
D)  none of the above 
A)  freeze frame 
B)  system readiness monitor 
C)  diagnostic trouble code 
D)  none of the above

Question 5

ODB II DLC has dedicated pin assignments and location based on SAE standard J1962.

Accepted Answer

A) True 
 B)False

Question 6

Emission controls on modern vehicles produced in the United States are installed to:

Accepted Answer

A)  meet federal and state government regulations 
B)  meet consumer demand 
C)  meet international standards 
D)  improve fuel economy 
A)  meet federal and state government regulations 
B)  meet consumer demand 
C)  meet international standards 
D)  improve fuel economy

Question 7

OBD II provides a universal OBD 16-pin DLC for all vehicles manufactured for the U.S. market since 1996.

Accepted Answer

A) True 
 B)False

Question 8

The SAE set forth what method to identify DTCs in an OBD II system?

Accepted Answer

The method used to identify a

Question 9

On an OBD II vehicle, the MIL will turn on when:

Accepted Answer

A)  a condition that could cause emissions levels exceeding 1.5 times the FTP level is detected 
B)  an input sensor is defective 
C)  an output sensor is defective 
D)  all of the above 
A)  a condition that could cause emissions levels exceeding 1.5 times the FTP level is detected 
B)  an input sensor is defective 
C)  an output sensor is defective 
D)  all of the above

Question 10

Technician A says that the DLC may be located under the hood on an OBD II vehicle. Technician B says that the DLC may be located anywhere that the manufacturer chooses on an OBD II vehicle. Who is correct?

Accepted Answer

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

Question 11

OBD II was mandated by the Federal Environmental Protection Agency to be installed on all passenger vehicles beginning with what model year?

Accepted Answer

A)  1990 
B)  1996 
C)  2000 
D)  2002 
A)  1990 
B)  1996 
C)  2000 
D)  2002

Question 12

How many OBD II warm-up cycles must occur for a stored DTC to be erased successfully?

Accepted Answer

A stored DTC will be

Question 13

Technician A says that all P1XXX DTCs are for manufacturers' specific diagnostic trouble codes. Technician B says that all P0XXX DTCs are for generic diagnostic trouble codes. Who is correct?

Accepted Answer

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

Question 14

How and why could a vehicle fail an OBD test but pass a tailpipe emissions test?

Accepted Answer

With OBD II systems, it is possible for

Question 15

What is an OBD II warm-up cycle, and how is it defined?

Accepted Answer

An OBD II warm-up cycle is def

Question 16

What is the objective of the on-board diagnostic (OBD) alert system (MIL)?

Accepted Answer

The objective of the on-board

Question 17

OBD II regulations require vehicle manufacturers to use the same terms for the same type of components on all manufacturers' vehicles.

Accepted Answer

A) True 
 B)False

Question 18

What does Mode 7 allow a scan tool to request?

Accepted Answer

Mode 7 allows a scan tool to r

Question 19

Can the emission control system be modified by the vehicle's owner or by a repair facility?

Accepted Answer

It is a federal offense for ve

Question 20

Under the OBD II regulations, what did all vehicle manufacturers have to do for all components and systems related to the engine management and emission control systems?

Accepted Answer

Under the OBD II regulations,

Of what type of emission malfunction does the on-board diagnostics emission monitoring system (OBD II system) alert the driver?

OBD II provides a universal OBD 16-pin DLC for all manufacturers' vehicles since 1990.

What conditions must be present for an OBD II system to illuminate the malfunction indicator light for a component problem?

When a DTC is set, the PCM also stores the operating parameters of the emission control system at the time of the event in a data program called:

ODB II DLC has dedicated pin assignments and location based on SAE standard J1962.

Emission controls on modern vehicles produced in the United States are installed to:

OBD II provides a universal OBD 16-pin DLC for all vehicles manufactured for the U.S. market since 1996.

The SAE set forth what method to identify DTCs in an OBD II system?

On an OBD II vehicle, the MIL will turn on when:

Technician A says that the DLC may be located under the hood on an OBD II vehicle. Technician B says that the DLC may be located anywhere that the manufacturer chooses on an OBD II vehicle. Who is correct?

OBD II was mandated by the Federal Environmental Protection Agency to be installed on all passenger vehicles beginning with what model year?

How many OBD II warm-up cycles must occur for a stored DTC to be erased successfully?

Technician A says that all P1XXX DTCs are for manufacturers' specific diagnostic trouble codes. Technician B says that all P0XXX DTCs are for generic diagnostic trouble codes. Who is correct?

How and why could a vehicle fail an OBD test but pass a tailpipe emissions test?

What is an OBD II warm-up cycle, and how is it defined?

What is the objective of the on-board diagnostic (OBD) alert system (MIL)?

OBD II regulations require vehicle manufacturers to use the same terms for the same type of components on all manufacturers' vehicles.

What does Mode 7 allow a scan tool to request?

Can the emission control system be modified by the vehicle's owner or by a repair facility?

Under the OBD II regulations, what did all vehicle manufacturers have to do for all components and systems related to the engine management and emission control systems?

Emissions and Engine Performance Overview

Basic Theories

On-Board Diagnostic Scanners and Digital Storage Oscilloscopes

Computers and Input Sensors

Ignition System and Related Input Sensorsoutput Actuators Diagnosis

Fuel System and Related Input Sensorsoutput Actuators Diagnosis

Emission Control and Evaporative Systems

Strategies of On-Board Diagnostic Continuous Monitors

Strategies of On-Board Diagnostic Non-Continuous Monitors

Im Failure Diagnosis and Five-Gas Exhaust Analysis

Filters

Exam 3: History of On-Board Diagnostics Obd

Of what type of emission malfunction does the on-board diagnostics emission monitoring system (OBD II system) alert the driver?

OBD II provides a universal OBD 16-pin DLC for all manufacturers' vehicles since 1990.

What conditions must be present for an OBD II system to illuminate the malfunction indicator light for a component problem?

When a DTC is set, the PCM also stores the operating parameters of the emission control system at the time of the event in a data program called:

ODB II DLC has dedicated pin assignments and location based on SAE standard J1962.

Emission controls on modern vehicles produced in the United States are installed to:

OBD II provides a universal OBD 16-pin DLC for all vehicles manufactured for the U.S. market since 1996.

The SAE set forth what method to identify DTCs in an OBD II system?

On an OBD II vehicle, the MIL will turn on when:

Technician A says that the DLC may be located under the hood on an OBD II vehicle. Technician B says that the DLC may be located anywhere that the manufacturer chooses on an OBD II vehicle. Who is correct?

OBD II was mandated by the Federal Environmental Protection Agency to be installed on all passenger vehicles beginning with what model year?

How many OBD II warm-up cycles must occur for a stored DTC to be erased successfully?

Technician A says that all P1XXX DTCs are for manufacturers' specific diagnostic trouble codes. Technician B says that all P0XXX DTCs are for generic diagnostic trouble codes. Who is correct?

How and why could a vehicle fail an OBD test but pass a tailpipe emissions test?

What is an OBD II warm-up cycle, and how is it defined?

What is the objective of the on-board diagnostic (OBD) alert system (MIL)?

OBD II regulations require vehicle manufacturers to use the same terms for the same type of components on all manufacturers' vehicles.

What does Mode 7 allow a scan tool to request?

Can the emission control system be modified by the vehicle's owner or by a repair facility?

Under the OBD II regulations, what did all vehicle manufacturers have to do for all components and systems related to the engine management and emission control systems?

Emissions and Engine Performance Overview

Basic Theories

On-Board Diagnostic Scanners and Digital Storage Oscilloscopes

Computers and Input Sensors

Ignition System and Related Input Sensorsoutput Actuators Diagnosis

Fuel System and Related Input Sensorsoutput Actuators Diagnosis

Emission Control and Evaporative Systems

Strategies of On-Board Diagnostic Continuous Monitors

Strategies of On-Board Diagnostic Non-Continuous Monitors

Im Failure Diagnosis and Five-Gas Exhaust Analysis

Filters