What is an idle validation switch?
What is an idle validation switch?
Idle validation switch (IVS): The idle validation sensor supplies a 5VDC signal to the ECM when the accelerator pedal is not in the idle position.
What does the idle validation switch ( IVs ) do?
The Idle Validation Switch (IVS) provides 0 or 12 Volts to the ECM as a signal to verify the pedal idle position.
What to do if throttle pedal has no idle validation switch?
If the throttle pedal has an idle validation switch installed, verify TPS count. Refer to “66.2.4 Determine Throttle Position Sensor Counts / Idle Validation Switch Status” . If the throttle pedal has no idle validation switch installed, update customer calibration using a programming station.
Are there any non-contact idle validation sensors?
The new sensors listed below contain “non-contact” hall-effect idle validation sensors. This replaces the open/closed IVS switches in the old sensors . As a result of this new design, the normal resistance measurements performed for the potentiometer and idle validation switch on the previous “contact’ sensor are no longer applicable.
What happens when the accelerator pedal is not in idle?
Ł B+ when the pedal is depressed The IVS receives a 12 V ignition voltage at Pin F from the ignition fuse in the power distribution box. When the pedal is not in the idle position (throttle applied), the IVS supplies a 12 V signal to the ECM. The ECM compares APS/IVS inputs to verify when the pedal is in the idle position.
The Idle Validation Switch (IVS) provides 0 or 12 Volts to the ECM as a signal to verify the pedal idle position.
If the throttle pedal has an idle validation switch installed, verify TPS count. Refer to “66.2.4 Determine Throttle Position Sensor Counts / Idle Validation Switch Status” . If the throttle pedal has no idle validation switch installed, update customer calibration using a programming station.
The new sensors listed below contain “non-contact” hall-effect idle validation sensors. This replaces the open/closed IVS switches in the old sensors . As a result of this new design, the normal resistance measurements performed for the potentiometer and idle validation switch on the previous “contact’ sensor are no longer applicable.
What to do if the IVs code is grounded?
If the IVS code is grounded (FMI 6), check the IVS switch. Refer to “66.2.2 Check the Idle Validation Switch” . Visually check to determine which throttle pedal has been installed that utilizes the IVS function. If the throttle pedal has an idle validation switch installed, verify TPS count.
