High School

During the EVAP monitor vacuum pull-down test, the canister vent solenoid is held open. (True/False)

Answer :

Final answer:

During the EVAP monitor vacuum pull-down test, the canister vent solenoid is held open.

Explanation:

The statement is True. During the EVAP (Evaporative Emission Control) monitor vacuum pull-down test, the canister vent solenoid is indeed held open. This test is part of the OBD (On-Board Diagnostics) system in modern vehicles, specifically to check for leaks in the fuel vapor system. By holding the canister vent solenoid open, it allows the engine vacuum to apply a vacuum to the fuel tank and check for any leaks.

Learn more about Automotive Emissions Control here:

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