Test DK: Electronic Throttle Control & Accelerator Pedal Position Sensor: Description
WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2003 Mercury Sable, 2003 Mercury Mountaineer, 2003 Mercury Marauder, 2003 Mercury Grand Marquis, and 2003 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
The normal range of the throttle angle measurement for the throttle position ETC (APP) sensor is 0 to 17 degrees. For voltage ranges of each sensor see Fig 1.