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Home >> Ford >> 2002 >> Crown Victoria Base, 4.6 9 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Controls - Theory & Operation - Gasoline & NGV) >> Computerized Engine Controls >> Power & Ground Signals >> Mass Air Flow Return

Mass Air Flow Return

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Mass Air Flow Return (MAF RTN) is a dedicated analog signal return from Mass Air Flow (MAF) sensor. It serves as a ground offset for analog voltage differential input by MAF sensor to PCM.