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OBD-II regulations require that the EGR system be tested. Technician A says that the PCM can monitor

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OBD-II regulations require that the EGR system be tested. Technician A says that the PCM can monitor

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 monitor for a change in the MAP sensor or oxygen sensor reading to detect if the system is functioning correctly. Which technician is correct?
A) Technician A B) Technician B C) Both technicians D) Neither technician

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Automotive Technology

Edition: 4^th

Author: Halderman

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