Auto Down Operation

With auto down operation the ignition switch must be in the ON position and with the power window master switch in the down position. Current flowing to the master switch flows to the master switch to the power window motor to the master switch to ground, causing the motor to rotate towards the down side.

Then the solenoid in the master switch is activated and it locks the auto switch being pushed, causing the motor to continue to rotate in auto down operation. When the window has completely descended, the current flows between the master switch and increases. As a result, the solenoid stops operating, the auto switch turns off and flows from the master switch to is cut off, stopping the motor so that auto stop occurs.