Engineering High School

While discussing PCM monitor tests: Technician A says that some monitors only run after another monitor completes. Technician B says that the monitor tests are run when the scan tool activates them. Who is correct?

a. Technician A
b. Technician B
c. Both A and B
d. Neither A nor B

Answers

Answer 1

Answer:

D

Explanation:

Answer 2

Answer: d. Neither A nor B

Explanation: A P0401 DTC (exhaust gas recirculation flow insufficient) is being discussed. Technician A says that a defective EGR valve could be the cause. Technician B says that clogged EGR passages could be the cause. OBD-II regulations require that the EGR system be tested. Technician A says that the PCM can monitor the commanded position of the EGR valve to determine if it is functioning correctly. Technician B says that the PCM can open the EGR valve and monitors for a change in the MAP sensor or oxygen sensor reading to detect if the system is functioning correctly.

Related Questions

Experts see the period immediately prior to the advent of World War II as the beginning of the modern residential construction industry in
the United States.
O True
O False

Answers

The answer is “true”

Answer: false

Explanation: got it right

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