Exam 24: Engine Performance Systems

OBD II technology is being discussed. Technician A says the OBD II system has the ability to store a freeze frame (snapshot)of the operating conditions that existed when the fault occurred. Technician B says vehicle identification must be transmitted automatically to the scan tool. Who is correct?

The output of the upstream and downstream oxygen sensors is compared to determine the efficiency of the ____________________.

Which of the following chemicals is NOT a pollutant?

Data collected by system sensors is stored in _____ memory.

What sensor is used to detect engine misfire?

What is the relationship between engine load and manifold vacuum?

Only OBD-II equipped vehicles have a sixteen-pin DLC connector.

List the steps in diagnosing a vehicle with an illuminated MIL light.

The monitor that continuously looks at all the major engine sensors and actuators that can affect emissions levels is called the ____________________.

The DLC connector on an OBDII vehicle is located under the______.

List the major components of the fuel delivery system.

A ____________________ is a snapshot of the activity of the various inputs and outputs at the time the PCM illuminated the MIL.