Town & Country V6-4.0L (2008)
Power Sliding Door Switch: Description and Operation
Power Sliding Door B Pillar Switch
Description
DESCRIPTION
The B-pillar switches are located on the interior of the vehicle, on the B-pillar trim panels. These switches serve as an open and close command switch
for the appropriate power sliding door.
Operation
OPERATION
The B-pillar switch is located on the lower B-pillar trim panel and allows the rear occupants to power open or close the sliding doors. The B-pillar
switch is an R-Mux switch that has a resistance of 3.6K ohms and 16K ohms depending on switch position. When pressed the B-pillar switch will have a
nominal resistance of 3.9K.
The B-pillar switches are hardwired to the Totally Integrated Power Module (TIPM). The Power Sliding Door Control Module (PSDM) receives the
message for operation status via the Controller Area Network (CAN) data bus. If all the necessary conditions are met the PSDM will then perform the
requested operation. The B-pillar switch lockout feature must be disabled and the sliding door must be unlocked in order for the B-pillar switch to
function.
The hard wired circuits for the B-pillar sliding door switches may be diagnosed using conventional diagnostic tools and procedures. However,
conventional diagnostic methods will not prove conclusive in the diagnosis of the electronic controls and communication between other modules and
devices that provide some features of the power sliding door system. The most reliable, efficient, and accurate means to diagnose the B-pillar switches or
the electronic controls and communication related to the power sliding door system operation requires the use of a diagnostic scan tool.
