Power Window Key-Off Timer Circuit
WARNING: This page is about a different car, the 1996 Honda Accord. However, it is still accessible from the selected car via links, so may be relevant.
When the ignition switch is "on" (II) and for 10 minutes after it is switched to "lock" (0) and as long as both front doors remain closed, the integrated control unit provides voltage to the coil of the power window relay. The contacts of the power window relay close and voltage is applied to the master power window switch and all the window switches in the doors.