Two technicians are describing OBD II monitors. Technician A says that the comprehensive component monitor (CCM) is not part of the OBD-II system because it only monitors electrical circuits. Technician B says that CCMs are required to monitor output components for functional faults. Who is right?

Question

Quizplus · Accepted Answer

Technician B is correct because the comprehensive component monitor (CCM) is part of the OBD-II system and is required to monitor output components for functional faults. Technician A is incorrect because the CCM is indeed part of the OBD-II system and monitors more than just electrical circuits.

Two Technicians Are Describing OBD II Monitors