Accelerator Pedal Position Sensor: Description and Operation

Accelerator Pedal Position Sensor Monitor

During ignition on conditions, the voltages from the two-track APP sensor are monitored. If the input voltage stays above a calibration value for more than a calibratable period, the high input failure judgment is made. If the input voltage stays below a calibration value for more than a calibratable period, the low input failure judgment is made. If the angle obtained from sensor 1 differs from the angle obtained from sensor 2 by more than a calibratable amount for more than a calibration period a range/performance failure judgment is made.