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Home >> Chevrolet >> 2006 >> Corvette Base, 2D Convertible, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 6.0L - DTC P0453 To DTC P2123 >> DTC P2120 >> Circuit Description

Circuit Description

The accelerator pedal position (APP) sensors 1 and 2 are located within the accelerator pedal assembly. Each sensor has the following circuits:

This provides the engine control module (ECM) with a signal voltage proportional to accelerator pedal movement. APP sensor 1 signal voltage increases as the pedal is depressed, from approximately 1 volt at rest to above 4 volts when fully depressed. The APP sensor 2 signal voltage increases as the pedal is depressed, from 0.5 volts at rest to more than 2 volts with the accelerator pedal fully depressed. If the ECM detects that the APP sensor 1 signal voltage is not within the predicted range, this DTC sets.

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