The key-off power window function controls the power window main relay operation based on the door lock control system.
When the ignition switch is turned from the ON position to the ACC or LOCK position, the integration relay detects the change, activates the timer circuit and keeps the power window main relay on for about 45 seconds.
When the integration relay detects the door opening based on the signal from the courtesy switch, the relay turns off the power window main relay.
Some models have a timer circuit in the power window master switch that controls the key-off power window function.