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Home >> Saturn >> 2006 >> Vue Red Line, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Engine Controls - 2.2L (L61) - Introduction (2 Of 2)) >> Description and Operation >> Throttle Actuator Control (TAC) System Description >> Accelerator Pedal Position (APP) Sensor

Accelerator Pedal Position (APP) Sensor

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The accelerator pedal contains 2 individual accelerator pedal position (APP) sensors within the assembly. The APP sensors 1 and 2 are potentiometer type sensors each with 3 circuits:

The APP sensors are used to determine the pedal angle. The engine control module (ECM) provides each APP sensor a 5-volt reference circuit and a low reference circuit. The APP sensors provide the ECM with signal voltage proportional to the pedal movement. The APP sensor 1 signal voltage at rest position is near the low reference and increases as the pedal is actuated. The APP sensor 2 signal voltage at rest position is also near the low reference and increases as the pedal is actuated.

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