Exam 81: Fuel-Injection System Diagnosis and Service

When looking at a solenoid with an oscilloscope, what event often follows applying or removing power from the coil windings?

Technician A says that the fuel system should be diagnosed first in a no-start condition. Technician B says that the ignition system trigger device is used to synchronize fuel injection. Which technician is correct?

On a vehicle with a speed density fuel injection system, which of the following is likely to occur with a vacuum leak?

The following statements are all correct EXCEPT ________.

What test is being performed here?

Which of the following values for IAC count would indicate a vacuum leak on a speed density system?

A scan tool is used in diagnosis to observe ________.

All of the following statements are correct EXCEPT ________.