Accelerator Pedal Position (APP)

The Accelerator Pedal Position (APP) sensor is mounted on the accelerator pedal. The APP  detects the position of the accelerator pedal and inputs this information as a voltage to the PCM. The PCM uses APP  sensor information to aid in determining line pressure, shift scheduling and TCC  operation. Failure of this sensor will cause the transmission to operate at higher line pressure to avoid damage to the transmission. This higher line pressure causes harsh upshifts and harsh engagements.