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Home >> Jaguar >> 2007 >> XK8 2D Convertible >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Electronic Engine Controls >> Electronic Engine Controls (4.2L, Vehicles Without: Supercharger) >> Electronic Engine Controls - Description & Operation >> Components >> Accelerator Pedal Position Sensor (APP)

Accelerator Pedal Position Sensor (APP)

Fig 1: Accelerator Pedal Position Sensor (APP)
GJ0009769Courtesy of JAGUAR CARS, INC.

The APP sensors are located on the accelerator pedal assembly.

The APP sensors are used to determine the driver's request for vehicle speed, acceleration and deceleration. This value is used by the ECM and the throttle is opened to the correct angle by an electric motor integrated into the throttle body.

The APP sensor signals are checked for range and plausibility. Two separate reference voltages are supplied to the pedal. Should one sensor fail, the other is used as a 'limp - home' input. In limp home mode due to an APP signal failure the ECM will limit the maximum engine speed to 2000 RPM.

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