Accelerator Pedal Position (PWG)

Accelerator Pedal Position (PWG): The accelerator pedal module provides two variable voltage signals to the ECM that represents accelerator pedal position and rate of movement. The ECM will activate the Valvetronic system.







Dual Hall sensors are integral in the accelerator pedal module. The ECM compares the two values for plausibility.

The ECM provides voltage (5v) and ground for the Hall sensors. As the accelerator pedal is moved from rest to full throttle, the sensors produce a variable voltage signal.




- Hall sensor 1 (request) = 0.5 to 4.5 volts
- Hall sensor 2 (plausibility) = 0.5 to 2.0 volts

If the signals are not plausible, the ECM will use the lower of the two signals as the request input. The acceleration response will be slower and the maximum Valvetronic opening will be reduced.