Which terminal of the OBD-II data link connector is the 12 volt for all vehicles?

The data link connector (DLC) is an 8-pin connector with a common (SAE J1962) size and shape.

Tech A says that OBDII will allow a technician to hook up a generic scan tool to read DTC's and clear DTC's. Tech B says that when the MIL is on, the vehicle should not be driven. Who is correct?

Harmful tailpipe emissions include all of these EXCEPT:

In what year did it become mandatory for all vehicles to be on-board diagnostic II (OBDII) compliant?

A scan tool detects a communications fault in the controller area network bus (CAN-bus). Which of these diagnostic trouble codes (DTC's) would MOST likely be stored?

Onboard diagnostics II (OBDII) data are retrieved by connecting a scan tool to the:

Which of the following components in the exhaust system helps in the reduction of exhaust emissions?

Each of the 10 operating modes of the OBD II system allows for access to different data. Which mode is used to clear DTCs and stored values?

Bidirectional scanners:

Simple scan tools from the '80's could read and erase fault codes and little more.

Tech A says that a "P" in the DTC stands for a powertrain code. Tech B says a "U" stands for an undetermined code. Who is correct?

Select one:

When a vehicle's malfunction indicator lamp (MIL), formerly called a "check engine light," is illuminated, it means the vehicle is not complying with clean air regulations.

Select one:

If the MIL flashes, it indicates that the:

Select one:

______ monitors the system for leaks as well as the ability to purge the canister of vapors.

Select one:

Which operating mode of the OBD II system shows current data?

Select one:

Tech A says that on OBDII vehicles, it is a good idea to clear the codes before diagnosis, and see if they reset. Tech B says that the DTC will tell you what part needs to be changed. Who is correct?

Select one:

On-board diagnostic (OBD) systems help the service tech do all of these EXCEPT:

Select one:

If the first character of the DTC is U, it indicates that the fault is located within the:

Select one:

A scan tool detects a communications fault in the controller area network bus (CAN-bus). Which of these diagnostic trouble codes (DTC's) would MOST likely be stored?

Select one:

Onboard computer modules include all of the following EXCEPT the:

Select one:

The engine misfire monitor directly detects a fault by monitoring:

Select one:

Diagnostic data should be deleted before all testing has been completed.

Select one:

To simplify wiring, controller area networks (CANs) have become common place in today's vehicles.

Select one:

Difficult-to-find intermittent faults can be diagnosed by carefully reviewing ______ data stored just before, during, and after the fault occurred.

Select one:

When it comes to troubleshooting an on-board diagnostic (OBD) code, the tech's best tools include all of these EXCEPT:

Select one:

A drive cycle includes all of these EXCEPT:

Select one:

Automotive technicians today are finding that they must use faster and more accurate diagnostic instruments, such as ________ scan tools, to see hidden faults in component or system wave forms.

Select one:

o What is the meaning of OBD II?

How many connector pins does the OBD II plug have?

Where is the OBD II connector usually connected on the vehicle?

What year vehicles is the OBD II connector made for?

What is the meaning of the automotive abbreviation TCM ?

What is the meaning of the automotive abbreviation OBD ?

What is the meaning of the automotive abbreviation DTC ?

What is the meaning of the automotive abbreviation VIN ?

What is the meaning of the automotive abbreviation EGR ?

What is the meaning of the automotive abbreviation PCM ?

What is the meaning of the automotive abbreviation MAF ?