LR3 (LA) V8-4394cc 4.4L (2005)
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Accelerator Pedal Position Sensor: Description and Operation
Accelerator Pedal Position Sensor
Description
During ignition on conditions the voltages from the two-track accelerator pedal position sensor is monitored. Both tracks are independently monitored
for out of range high and low conditions.
If the input voltage to the ECM stays above a defined value for longer than a calibratable period, the high input failure judgement is made. If the input
voltage to the ECM stays below a defined value for longer than a calibratable period, the low input failure judgement is made.
Additionally the signals from the two tracks are compared. If the angle obtained from sensor 1 differs from the angle obtained from sensor 2 by more
than a defined amount for longer than a calibration period a range / performance failure judgement is made.
