OBD-II Canister Purge Systems Are Being Discussed

question 61

Multiple Choice

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

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Definitions:

Readiness

A state of being fully prepared or in a suitable condition for an immediate action or use.

Fixed Action Pattern

An instinctive behavioral sequence that is relatively invariant within the species and almost inevitably runs to completion once initiated.

Dishabituation

The renewal of a response, previously habituated, following a change in stimulus.

Dehabituation

The revival of a response that had been previously habituated, often as a result of presenting a new, novel stimulus.