Technician A says that if all the sensors and components of the aftertreatment system are removed, the OBD-II system will not be able to detect faults in the absence of electrical signals. Technician B says that the comprehensive component monitor (CCM) will set emission-related fault codes. Who is correct?
A)Technician A
B)Technician B
C)Both A and B
D)Neither A nor B

Question

Quizplus · Accepted Answer

The comprehensive component monitor (CCM) is designed to detect faults in the aftertreatment system, even if all the sensors and components are removed. The CCM will set emission-related fault codes if it detects any problems with the aftertreatment system.

Technician a Says That If All the Sensors and Components