Chrysler Repair: Power Window motor/mechanism: 99 T&C, dodge grand caravan, dodge repair

Question
QUESTION: I have 1 1999 Chrysler T&C. The passenger window cannot go down and then back up without stopping, waiting a little bit allows it to move some more. I think there is a relay going bad. I have the service manual, and have removed the lower steering column cover and the metal knee blocker reinforcement, and can see the junction block. I would like to swap PTCs 8 and 9 to see if a different PTC corrects the behavior, but I am having a difficult time getting the little plastic cover off the PTCs so I can remove them. I don't see instructions for how to do this in the manual. The post at http://en.allexperts.com/q/Dodge-Repair-809/1999-Dodge-Grand-Caravan-1.htm implies that they are not serviceable, but I have seen many references to replacing them, so there should be a way to get them out.

ANSWER: Hi Keith,
I haven't worked with PTC's so can't give you advice on their removal. However you could monitor the output of each of those at the pins of the upper right 36-pin plug. PTC 8 is on pin 17 while PTC 9 is on pin 34. You could put your voltmeter on those pins while you operate the window switch to observe if either of them opens momentarily while in use. I suspect that is the normal behavior of these solid-state fuses, and that the load on the window motor may be due to friction in the lift mechanism.  I don't see any relays in the circuit for the power windows. Please let me know what you learn.
Roland

---------- FOLLOW-UP ----------

QUESTION: Hello Roland -
I did the voltage check. The voltage was constant, with a minimal drop as I operated the windows. The passenger window voltage still showed 11.5 volts (engine not running) when it stopped, and stayed constant as I applied the switch to try to get it to move again. So it appears that the PTC is not the problem. As this problem seems to happen more in cold weather, is it more likely the window motor is overheating due to friction as you suggest, or that the window motor itself is failing?
Thanks,
Keith

Answer
Hi Keith,
Only by removing the door trim panel will you be able to assess what is going on inside.
FRONT DOOR TRIM PANEL
REMOVAL
Using a trim stick (C-4755), pry courtesy lamp from door trim.
Disconnect wire connector from courtesy lamp.
If equipped, remove screws attaching door assist handle to inner door panel.
If equipped, remove screw attaching door pull cup to inner door panel.
If equipped, remove screws attaching trim panel to door from below map pocket.
If equipped, remove window crank.
Using a trim stick, remove screw cover from switch panel.
Remove screws attaching switch panel to door trim.
Remove power accessary switch from door trim Front Door Switch Panel
Disconnect power switch from wire connector.
If equipped, using a small, flat bladed pry tool, remove memory seat/mirror switch and disconnect wire connector Memory Seat/Mirror Switch
If equipped, remove screw holding door trim to door panel from behind inside latch release handle.
Disengage clips attaching door trim to door frame around perimeter of panel Front Door Trim Panel
Lift trim panel upward to disengage flange from inner belt molding at top of door.
Tilt top of trim panel away from door to gain access to latch linkage.
Disengage clip attaching linkage rod to inside latch release handle Inside Door Handle Linkage
Separate linkage rod from latch handle.
Remove front door trim panel from vehicle
INSTALLATION
Hold top of trim panel away from door to gain access to latch linkage.
Place linkage rod in position on latch handle.
Engage clip to hold linkage rod to inside latch release handle.
Place front door trim panel in position on door.
Install trim panel into inner belt molding at top of door.
Install clips to attach door trim to door frame around perimeter of panel.
If equipped, install screw to attach door trim to door panel behind inside latch release handle.
If equipped, connect power switch into wire connector.
Place power accessary switch in position on door trim.
Connect wire connector into memory seat/mirror switch and install switch into trim panel.
Install screws to attach accessary switch panel to door trim.
Install screw cover into switch panel.
If equipped, install window crank.
If equipped, install screws to attach trim panel to door inside map pocket.
If equipped, install screw to attach door pull cup to inner door panel.
If equipped, install screws to attach door assist handle to inner door panel.
Connect wire connector into courtesy lamp.
Install lamp in door trim.

Roland