Grand Caravan AWD V6-3.8L VIN L (2001)
Door Module: Description and Operation
SLIDING DOOR CONTROL MODULE
Vehicles equipped with a power sliding door utilize a sliding door control module. The sliding door control module is located behind the sliding
door trim panel in the center of the door, just above the sliding door motor. This module controls the operation of the door through the
Programmable Communication Interface (PCI) J1850 data bus circuit and the Body Control Module. The sliding door control module contains
software technology which enables it to detect resistance to door travel and to reverse door travel in order to avoid damage to the door or to avoid
possible personal injury if the obstruction is a person. This feature functions in both the opening and closing cycles. If the power sliding door
system develops any problems the control module will store and recall Diagnostic Trouble Codes (DTC). The use of a diagnostic scan tool, such
as the DRB III is required to read and troubleshoot these trouble codes. The sliding door control module can be reflashed if necessary. Refer to the
latest Technical Service Bulletin (TSB) Information for any updates.
The power door control module is a replaceable component and cannot be repaired, if found to be faulty it must be replaced. Consult your
Mopar(TM) parts catalog for a specific part number.
The power sliding door control module serves as the main computer for the power sliding side door system. All power door functions are
processed through the power 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 door control module via the J1850 data bus circuit. This signal, generated by any of the power
door command switches, tells the power 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 control module that the door has
reached the full open position. If the power sliding door system develops any problems the control module will store and recall Diagnostic Trouble
Codes (DTC). The use of a diagnostic scan tool, such as the DRB III is required to read and troubleshoot these trouble codes.
