EDK Throttle Position Feedback Signals: Notes

The EDK throttle plate is monitored by two integrated potentiometers. The potentiometers provide linear voltage feedback signals to the control module as the throttle plate is opened and closed.

Feedback signal 1 provides a signal from 0.5 V (LL) to 4.5 V (VL).

Feedback signal 2 provides a signal from 4.5 V (LL) to 0.5 V (VL)

Potentiometer signal 1 is the primary feedback signal of throttle plate position and signal 2 is the plausibility cross check through the complete throttle plate movement.

Fig 1: Electronic Throttle Valve Circuit Diagram

Courtesy of BMW OF NORTH AMERICA, INC.

Fig 2: Electronic Throttle Valve Signal Voltage Chart

Courtesy of BMW OF NORTH AMERICA, INC.