Multiple Choice
Technician A tests an MAF sensor with a scan tool by watching for erratic changes in flow while the engine idles. Technician B checks an MAF sensor by tapping it lightly with the handle of a screwdriver while watching the waveform on a lab scope. Who is correct?
A) A only
B) B only
C) both A and B
D) neither A nor B
Correct Answer:

Verified
Correct Answer:
Verified
Q40: An air/fuel ratio sensor is different from
Q41: What is a closed loop system?
Q42: The sensor and output status data stored
Q43: Describe the driving procedure that will allow
Q44: The _ sensor tells the PCM that
Q46: Which of the following is NOT a
Q47: Two technicians are discussing OBD-II monitor readiness
Q48: A MAP sensor with a varying frequency
Q49: Normal throttle position sensor signal voltage at
Q50: Drivability problems that do not set a