Express Down Window Operation

When a DN switch is held for more than 0.3 seconds the timer and control unit, within the express down window module, detects this at the down input terminal. The relay control switch closes completing the relay coil ground circuit through the UP contact in the door switch assembly, energizing the relay. The relay contacts close applying voltage at the express down window module terminal A to terminal D, through CKT 965 or 966 to the window motor. See WIRING DIAGRAMS  . The motor runs to drive the window down.

When the window is fully down the motor stall current is detected at the current sense input of the timer and control unit. The relay control switch is opened, de-energizing the relay and disconnecting power to the window motor. If the motor stall current has not been detected 10-30 seconds after the down input was detected, the timer and control unit will open the relay control switch, de-energizing the relay and disconnecting power to the window motor.

The express down feature can be halted if either the DN or UP Switch is pressed. If the DN Switch is pressed voltage is applied to terminal B of the express down window module and is detected by the timer and control unit at the down input terminal. The timer and control unit opens the relay control switch, de-energizing the relay and disconnecting power to the window motor. The window will stop moving down.

If the UP Switch is pressed voltage is applied to terminal C of the express down window module and is detected by the timer and control unit at the up-stop input terminal. The timer and control unit opens the relay control switch, de-energizing the relay and disconnecting power to the window motor. The window will stop moving down and will start moving up if the UP switch is held. If the power input at terminal A of the express down window module is lost the power window will still operate but without the express down feature.