Description & Operation
The APP sensor is an input to the Powertrain Control Module (PCM) and is used to determine the torque demand. There are 3 pedal position signals in the sensor. Signal 1, APPS1, has a negative slope (increasing angle, decreasing voltage) and signals 2 and 3, APPS2 and APPS3, both have a positive slope (increasing angle, increasing voltage). During normal operation APPS1 is used as the indication of pedal position by the strategy. The 3 pedal position signals make sure the PCM receives a correct input even if 1 signal has a concern. There are 2 reference voltage circuits and 2 signal return circuits for the sensor.
Removal & Installation
- Disconnect the battery ground cable.
- Disconnect the accelerator pedal motor electrical connector.
Remove the two bolts and the accelerator pedal assembly.
- To install, reverse the removal procedure.
Check the APP Sensor signal output voltage ranges for the accelerator pedal fully applied and released positions.
APPS1 (Pin #2)
APPS2 (Pin #5)
APPS3 (Pin #8)
APP Sensor Pin Testing