Manual Operation (Driver's Window)
WARNING: This page is about a different car, the 2003 Lexus IS 300 and 2002 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.
When the power window master switch is operated to UP position with the ignition on, the current flows from the D FR P/W fuse to the power window master switch TERMINAL 1 to TERMINAL 8 to the front LH power window motor TERMINAL 1 to TERMINAL 2 to the power window master switch TERMINAL 20 to TERMINAL 9 to GROUND, and the motor rotates to close the window.
When the power window master switch is operated DOWN position with the ignition on, the current flows from the D FR P/W fuse to the power window master switch TERMINAL 1 to TERMINAL 20 to the front LH power window motor TERMINAL 2 to TERMINAL 1 to the power window master switch TERMINAL 8 to TERMINAL 9 to GROUND, and the motor rotates to open the window.