Principles of Operation

WARNING: This page is about a different car, the 2005 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.

The left front window switch may be used to raise or lower all windows, or each individual side window may be controlled by the control switch located on each door panel.

The instrument control module (ICM) controls power to the power window system by activating or deactivating the delayed accessory relay.

The one-touch down feature will completely lower the driver side window when the master control is fully depressed, then released. The one-touch down feature is integrated into the LF window control switch.

There are 2 modes of LF window down operation: manual mode and auto mode. The manual mode is selected by pressing the LF window control switch to the 1st (DOWN) position. In manual mode, the window will move downward only while the switch is depressed. When the LF window control switch is pressed to the 2nd DOWN position, it enters auto mode and the window will open completely with a momentary press of the switch.

When the one-touch down feature has been activated, it will stay on until one of the following conditions is met:

The LF window control switch is pushed to the UP position.
The LF window control switch is released (OFF position) and then moved to the DOWN position (1st detent) or ONE-TOUCH DOWN (OTD) position (2nd detent).
7 seconds have elapsed since OTD was initiated.

Window operation is enabled whenever the delayed accessory is active and the LF window control switch is pressed to the UP or DOWN position. The switch provides delayed accessory power to one side of the motor and ground to the other side. The one-touch down feature is not active when the LF window control switch is in the UP position.

Passenger windows may be raised or lowered using the LF window control switch or the appropriate passenger window control switch. Passenger window control switches receive power when the delayed accessory relay is active and the LF remote lock-out switch is in the UNLOCK position. When in the LOCK-OUT position, the passenger windows are deactivated.

The delayed accessory relay provides power for the operation of the power windows and the power roof opening panel. The delayed accessory relay is active whenever the ignition switch is in the RUN or the ACC position, or when the ignition switch is changed from RUN or ACC to the OFF/LOCK position and the LF and RF doors are closed.

The ICM will deactivate the delayed accessory feature when:

The LF door is ajar and the ignition switch is in the OFF/LOCK or KEY-OUT position.
The RF door is ajar and the ignition switch is in the OFF/LOCK or KEY-OUT position.
10 minutes have elapsed since the ignition switch was changed from ACC or RUN to the OFF/LOCK position.