The power door latch system contains the following components:

The remote control door lock receiver (RCDLR), driver door module (DDM) and body control module (BCM) control the output functions of the driver power door latch. These output functions allow the RCDLR and BCM to command the driver power door latch motor to Unlatch.

When the RCDLR receives an input from either the driver exterior door handle switch or driver interior door handle switch, it checks the Lock/Unlock status of the driver door. If the status of the driver door is Unlock, the RCDLR applies the ground for the driver power door latch.

At the same time that the RCDLR is receiving its input, the DDM is also receiving the same input. When the DDM receives its input from the door handle switch, it checks the window indexing status of the driver door. If the window is below the index point, it sends a serial data message to the BCM to apply voltage for the driver power door latch. If the window is above the index point, it will first index the window, then send a serial data message to the BCM to apply voltage for the driver power door latch. For a better description of window indexing, refer to Power Windows Description and Operation .

The remote control door lock receiver (RCDLR), passenger door module (PDM) and body control module (BCM) control the output functions of the passenger power door latch. These output functions allow the RCDLR and BCM to command the passenger power door latch motor to Unlatch.

When the RCDLR receives an input from either the passenger exterior door handle switch or passenger interior door handle switch, it checks the Lock/Unlock status of the passenger door. If the status of the passenger door is Unlock, the RCDLR applies the ground for the passenger power door latch.

At the same time that the RCDLR is receiving its input, the PDM is also receiving the same input. When the PDM receives its input from the door handle switch, it checks the window indexing status of the passenger door. If the window is below the index point, it sends a serial data message to the BCM to apply voltage for the passenger power door latch. If the window is above the index point, it will first index the window, then send a serial data message to the BCM to apply voltage for the passenger power door latch. For a better description of window indexing, refer to Power Windows Description and Operation .