Windows Express Feature

Driver Door Module (DDM) and Passenger Door Module PDM) have express up feature. This allows windows to be fully close by momentarily pressing appropriate window switch to second detent of window down position. Each front door window motor has a sensor mounted to it. These window sensors detect differences in their respective window motors electrical pulses, to determine if there is an obstruction of window glass. If a sensors detects that a passenger, or other obstacle, has become trapped between a window and window frame, it sends this information, through 2 communication circuits, to an associated door module. Door module then takes appropriate action and, either disables express up function, or reverses direction of window travel.

Each door module and corresponding sensor are wired to each other by 4 separate circuits to control express up function. Each front door module supplies battery voltage, through window sensor battery voltage circuit. Ground is supplied through window sensor low reference circuit, to sensor. Each door module communicates with sensor through 2 other separate and unique communication circuits. Communication circuits are, window sensor high speed communications circuit, which is a one-way communications line from sensor to associated module. Window sensor normal speed communications circuit, which is a 2-way communications line that carries information both ways, from sensor to associated module, and module to sensor. These communication lines are used for State-Of-Health (SOH) messages. Window switch command status, and communicate actual position of window glass in relationship to distance traveled by window.

If a any door module looses power for any reason, such as disconnecting battery, window motor must be reprogrammed, once power has been restored to door modules. Express up is available only on driver and passenger front door switch. Express down is available on all power window switches.