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Feedback Control Solenoid: Description and Operation

Feedback Solenoid Valve (FBSV) Control System:




FBSV And SCSV Locations:





Feedback Solenoid Valve (FBSV) is installed in the carburetor float chamber cover. The ECU controls the main fuel metering circuit air-fuel ratio by controlling the duty cycle of the FBSV. The higher the duty cycle on time ratio, the leaner becomes the air-fuel ratio.