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Technician a Tests an MAF Sensor with a Scan Tool

Question 45

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

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