Power Windows -- Left

Circuit F21 supplies voltage to the left power window switch for raising and lowering the windows. When the switch for the left window is put in the DOWN position, the switch supplies voltage to the left power window motor on circuit Q21. The ground path from the motor is on circuit Q11 back through the switch to ground on circuit Z1.

When the left power window switch is put in the UP position, circuit Q11 supplies voltage to the power window motor. The ground path from the motor is on circuit Q21 back through switch to ground on circuit Z1.