F 550 4WD Super Duty V8-7.3L DSL Turbo VIN F (2001)
Accelerator Pedal Position Sensor: Description and Operation
Idle Validation Switch
Idle Validation Switch
The ECT Switch portion verities when the accelerator pedal is in the idle position. This switch protects against in-range failure of the ETC sensor.
A PCM detected fault of the ETC Switch will illuminate the Malfunction Indicator Lamp. An inoperative ETC Switch detected by the PCM will only
allow the engine to run at idle.
