Express Down Window Operation

The Express Down Window function is a convenience feature that allows the LH front window to be fully opened by holding the LH Front Window Switch "DN" for more than 0.3 seconds then releasing it. If the LH Front Window Switch is held "DN" for less than 0.3 seconds, the window will only move down a small distance.

When the Ignition Switch is in "RUN," the Power Window Control Module receives power at term "A." When the LH Front Switch is held "DN" for more than 0.3 seconds and released, the Timer and Control Unit detects this at the Down Input terminal. The Relay Control switch closes, completing the coil circuit through the LH Front "UP" Switch in the Master Switch Assembly to ground. The relay contacts close and the LH Front Power Window Motor receives battery voltage. The other terminal of the motor is grounded through the Master Switch Assembly LH front "UP" contact. When the window is fully down, the motor stall current will be detected at the current sense input of the Timer and Control Unit. The Relay Control Switch will be opened, de-energizing the coil and disconnecting power to the motor. The motor will also be stopped 20±10 seconds after the LH Front "DN" Switch is pushed.

If the LH Front "UP" or "DN" Switch is pushed while operating in the Express Down mode, the Timer and Control Unit will detect this at the Up-Stop Input terminal and open the Relay Control switch. CKT 164 at the other LH front power window terminal is now not grounded through the Master Switch Assembly. The window will stop moving down and will move up if the LH Front "UP" Switch is held. If the Power Input at term "A," of the Power Window Control Module is lost, the power window will still operate but without the Express Down feature.