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Home >> Mercury >> 2002 >> Villager Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls >> Input Devices >> Throttle Position Sensor

Throttle Position Sensor

Throttle Position (TP) sensor monitors throttle plate opening. TP signal to PCM is proportional to opening angle. TP sensor is mounted on throttle body, at throttle plate shaft. If Mass Air Flow (MAF) sensor fails, PCM will use TP sensor to provide airflow information. This is called fail safe mode.