Windows: Description and Operation

Circuit Description

A Permanent magnetic motor operates each of the power windows. Each motor raises or lowers the glass when voltage is supplied to it. The direction the motor turns depends on the polarity of the supply voltage. The power window main switch controls all the power window motors. Each window switch controls only one of the power window motors.

If the window lock switch in the power window main switch is depressed, the 1ear power windows and the right front power window cannot be controlled by their own window switches, however, they can still be controlled by the power window main switch.

Power Window Main Switch Operation
Battery voltage is applied at all times to both the coil and contacts of the power window relay. The coil of the relay is supplied battery voltage through fuse 16. Battery voltage is then supplied to the power window main switch through the closed relay contacts.

When any of the switches in the power window main switch are operated, battery voltage is applied to the power window motor. The power window motor is grounded through the opposite contact in the power window main switch. The power window motor runs to drive the window.

Window Switch Operation
When the power window relay coil is energized, battery voltage is supplied to the passenger window switches as long as the lock switch in the power window main switch is OFF (not depressed). When the passenger's window switch is operated, battery voltage is applied to one terminal of the power window motor and the other terminal is grounded through the opposite contact in the window switch and the main switch. The power window motor runs to drive the window.