Grand Caravan V6-3.8L VIN L (2007)
Power Sliding Door Module: Description and Operation
Operation
OPERATION
The power sliding door control module serves as the main computer for the power sliding door system. All power door functions are processed through
the power sliding door control module and/or the vehicles Body Control Module (BCM). At the start of a power open command, a signal is sent to the
BCM and then to the power sliding door control module via the Programmable Communication Interface (PCI) data bus circuit. This signal, generated
by any of the power door command switches, tells the power sliding door control module to activate a power latch release, engage the clutch assembly
and drive the door into the full open position. If an obstacle is felt during this power open cycle, the module will reverse direction and close the door.
This process is also enabled during a power close cycle. This process will repeat three times, and if a fourth obstacle is detected, the door will go into full
manual mode. Once the full open position is obtained, a hold open latch assembly mounted full open switch tells the power sliding door control module
that the door has reached the full open position. If the power sliding door system develops any problems the power sliding door control module will store
and recall Diagnostic Trouble Codes (DTC). The use of a diagnostic scan tool, such as the DRBIII(R) is required to read and troubleshoot these trouble
codes.
