OBD-II canister purge systems are being discussed. Technician A says the canister purge solenoid valve is only open and controlled when the system is in open loop. Technician B says because the system responds to current engine and operating conditions, the purging of the vapors does not affect drivability. Who is correct?
A)A only
B)B only
C)both A and B
D)neither A nor B

Question

Quizplus · Accepted Answer

The canister purge solenoid valve is controlled during closed loop operation, not open loop. Technician B is correct because the system is designed to purge vapors without affecting drivability.

OBD-II Canister Purge Systems Are Being Discussed