Circuit Description The idle validation switch (IVS) is used by the electronic control module (ECM) to indicate when the accelerator pedal is released (on-idle) or depressed (off-idle). The switch is adjusted by the accelerator pedal manufacturers to switch from on-idle to off-idle at the correct accelerator pedal position.
NOTE: The connector pin letters shown for the accelerator pedal wiring in these troubleshooting steps are examples of representative sensors. The connector pin assignments can vary with the equipment manufacturer, but the base troubleshooting logic will still apply.
Component Location The idle validation switch is located on the accelerator pedal assembly.
Shop Talk This fault code is usually caused by a loose connection, uncalibrated accelerator pedal, or miswired IVS. A bad ground on pin A of the IVS can also cause this fault.