The Chrysler Minivan Fan Club Forums banner

1 - 4 of 4 Posts

·
Registered
Joined
·
1 Posts
Discussion Starter · #1 ·
We have a 2008 Town and Country Limited. It has the power rear hatch that opens and closes itself. However, recently after someone forced it open when it was opening itself, it has developed a problem that when auto opening, as soon as it gets to the top it drops a couple inches, then auto closes. Our warranty JUST expired. Any suggestions?
 

·
Banned
Joined
·
547 Posts
good luck

the liftgate has so many things going on at once that it needs to go to a dealer to be scanned for errors.
they do not make it easy to test what is going on

try pulling the power liftgate fuse. Maybe it will reset.
========================

OPERATION

Battery voltage is supplied to the power liftgate system through a fuse located in the Totally Integrated Power Module (TIPM) assembly. The power liftgate open/close command can be initiated by either one press of the power liftgate overhead console switch, one press of the power liftgate D-Pillar switch or two presses of the key fob power liftgate button. The overhead console and D-Pillar switches are hardwired to the power liftgate control module, where as the key fob signal is sent out on the Controller Area Network (CAN) Data Bus circuit. This signal is detected by the power liftgate control module. The power liftgate control module then interprets the information to confirm safety requirements are met before applying power to the power liftgate motor to start a power cycle.

During a power liftgate open or close cycle, if the power liftgate control module detects sufficient resistance to liftgate travel, such as an obstruction in the liftgate's path, the control module will immediately stop liftgate movement and reverse the direction of travel to the full open or closed position.

The power liftgate control module has the ability to relearn. After 8 miles have been recorded on the odometer, anytime the liftgate is fully opened and fully closed using the automatic system, the module will learn from its cycle. If a replacement power liftgate component is installed or a liftgate adjustment is made, the module will relearn the effort and time required to open or close the liftgate. This learn cycle can be performed with a Diagnostic Scan Tool or with a complete cycle of the liftgate, using any of the command switches.

=========================================
POWER LIFTGATE LEARN CYCLE

Any time a power liftgate component is removed, replaced or a liftgate adjustment is performed, a learn cycle must be performed. This learn cycle enables the power liftgate control module to learn or relearn information (travel limits, resistance to door travel, etc.) which allows it to perform properly and safely. To perform a learn cycle do the following:



  1. Obtain an appropriate scan tool.
  2. Connect the scan tool to the vehicle and check for any power liftgate system stored trouble codes, correct and erase any stored codes.
  3. Close liftgate.
  4. Using the scan tool, select the Power Liftgate Module (PLGM) Menu, More Options, System Tests and select the Open Door Test.
  5. Using a scan tool check "routine status" for a pass or fail message. If the Open Door Test did not pass, the scan tool will display the reason to aid in system diagnosis or rerunning the Open Door Test routine.
  6. Using the scan tool, select Power Liftgate Module (PLGM) Menu, More Options, System Tests and select the Close Door Test.
  7. Using a scan tool check "routine status" for a pass or fail message. If the Close Door Test did not pass, the scan tool will display the reason to aid in system diagnosis or rerunning the Close Door Test routine.
  8. Follow the instructions on the scan tool to complete the test.
  9. The liftgate learn cycle is complete.
NOTE: If the power liftgate will not complete a full cycle a problem exists with the power liftgate system. In order to obtain conclusive testing of the power liftgate system, the Controller Area Network (CAN) data bus, and all of the electronic modules that provide inputs to, or receive outputs from the power liftgate system components must be checked. Any diagnosis of the power liftgate system should begin with, the use of a scan tool and the appropriate diagnostic service information.
 
1 - 4 of 4 Posts
Top