Power Windows Without Express Functions

The driver power window switch contains switches that controls the functions of the driver window motor and also allows the driver to remotely control the functions of the passenger, left rear and right rear power window motors

Battery voltage is supplied to the driver power window switch through the accessory voltage supply circuit. The driver power window switch also receives a constant ground source. The power window motor control circuits are connected to ground through the normally closed up and down contacts of the driver power window switch. When the driver power switch is placed in the down position, the power window motor down control circuit is switched to 12 volts and is applied to the down side of the driver power window motor. Since the other side of the driver power motor is connected to ground through the normally closed contacts of the up switch, the driver window travels down. By placing the driver power window switch in the up position, the polarity of the driver power window motor is reversed and the window travels up.

Battery voltage is supplied to the front passenger power window switch through the accessory voltage supply circuit. Ground for the passenger power window motor is supplied through normally closed up and down contacts of both the front passenger power window switch and the driver power window switch. When the front passenger power window switch is placed in the down position, the power window motor down control circuit is switched to 12 volts and is applied to the down side of the front passenger power window motor. Since the other side of the front passenger power motor is connected to ground through the normally closed up contacts of both the front passenger and driver power window switches, the window travels down. By placing the front passenger power window switch in the up position, the polarity of the power window motor is reversed and the window travels up.

The rear power window switches receive battery voltage through the window lockout control circuit if the window lockout function is disabled. Ground for the rear passenger power window motors is supplied through normally closed up and down contacts of both the rear passenger power window switches and the driver power window switch. When the either rear passenger power window switch is placed in the down position, the power window motor down control circuit is switched to 12 volts and is applied to the down side of the rear passenger power window motor. Since the other side of the rear passenger power motor is connected to ground through the normally closed up contacts of both the rear passenger and driver power window switches, the window travels down. By placing the rear passenger power window switch in the up position, the polarity of the power window motor is reversed and the window travels up.