Answer :
Final answer:
The solenoid valve that purges the evap canister is controlled by the Engine Control Module (ECM). The ECM receives input from various sensors, including the oxygen sensor, to regulate engine functions and emissions.
Explanation:
The correct answer is c) Engine control module (ECM).
The solenoid valve that purges the evap canister is controlled by the Engine Control Module (ECM). The ECM is an integral part of the vehicle's onboard computer system and it receives input from various sensors to regulate the engine functions and emission control systems.
One of the inputs the ECM uses to control the solenoid valve is the Oxygen sensor. The Oxygen sensor measures the amount of oxygen in the exhaust gases and provides feedback to the ECM, which in turn adjusts the solenoid valve to optimize fuel mixture and reduce emissions.
The Throttle position sensor and Mass airflow sensor are also important sensors that provide input to the ECM for other engine control functions, but they do not directly control the solenoid valve that purges the evap canister.
