F 350 4WD Pickup V8-7.3L DSL Turbo VIN F (1994)
Accelerator Pedal Position Sensor: Description and Operation
Idle Validation Switch
The Idle Validation Switch (IVS) provides the Powertrain Control Module (PCM) with a redundant signal to verify when the accelerator pedal and shaft
is in the idle position. Any detected malfunction of the IVS will illuminate the CHECK ENGINE light and the engine will operate at low idle only.
