Circuit Operation

CIRCUIT OPERATION
In the run position, the ignition switch connects circuit A2 from fuse 3 in the Power Distribution Center (PDC) to circuit A22. Circuit A22 powers circuit F21 through the circuit breaker in cavity 8 of the fuse block. Circuit F21 supplies battery voltage to the left and right power window switches.

Circuit Z1 provides ground for the system through the left power window switch.

The left power window switch contains switches for the left and right windows. The right power window switch on the passengers side of the vehicle only operates the right window.

Left Power Window
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.

Right Power Window
The right power window can be operated by either the right power window switch on the driver's side or the switch on the passenger side. The switch on the passengers side of the vehicle is wired in series between the driver's side switch and the motor.