Chrysler Town, Dodge Caravan. Manual — part 121
CONDITION
POSSIBLE CAUSES
CORRECTION
Failure of sliding door control or
body control module
Disconnect then reconnect battery to reset
module, function door, if no function exists
check for loose wire connections, see Body
Diagnostic Manual for detailed procedures
Failure of striker
Striker misaligned or loose
Striker damaged
Replace striker if necessary
Cables worn and stretched
Replace cables as necessary
Binding or sticking of components
Establish location of binding and replace
necessary components
Key fob, B-pillar or
overhead console switch
does not power operate
door
Blown Fuse
Check fuse and replace
Battery voltage low
Charge or replace battery
Failure of latch assembly
Check for foreign matter preventing the
operation of latch assembly
Check wire connection
Pawl and/or ratchet switch inoperative
Replace latch if necessary
Wiring problems (system or
vehicle)
Troubleshoot using electrical schematics.
Refer to wiring diagrams
Failure of body control module
Check electrical connections
Refer to the body diagnostic manual for
additional checks
Replace BCM if necessary
Failure of key fob
Replace key fob battery
Replace key fob if necessary
Failure of sliding door control
module
Disconnect then reconnect battery to reset
module, function door, if no function exists
check for loose wire connections, see Body
Diagnostic Manual for detailed procedures
Failure of door motor assembly
Check for foreign matter preventing the
operation of gear motor assembly
Check wire connections
Gear motor clutch does not engage, replace
assembly
Full open switch inoperative, replace hold
open latch assembly
Replace motor assembly. if necessary
Door does not stay open
Failure of hold open latch assembly
Check wire/cable connections
Replace hold open latch, if necessary
Failure of hold open latch striker
Replace hold open latch striker, if necessary
8N - 26
POWER SLIDING DOOR SYSTEM
RS
POWER SLIDING DOOR SYSTEM (Continued)
CONDITION
POSSIBLE CAUSES
CORRECTION
High inside/outside opening
effort
Failure of latch assembly
Check wire connections and for blown fuse
Check cable connections
Check for foreign matter preventing the
operation of latch assembly
Troubleshoot using body diagnostic manual
Replace latch assembly, if necessary
Failure of inside/outside handle
assembly
Go to that
9
POSSIBLE CAUSE
9
and review
9
CORRECTIONS
9
Binding or sticking of components
Establish location of binding and replace
necessary components
Door continues to cinch
closed during power mode
Failure of latch assembly
Check wire connections and for blown fuse
Check for foreign matter preventing the
operation of latch assembly
Troubleshoot using body diagnostic manual
Replace latch assembly, if necessary
Failure of sliding door control or
body control module
Disconnect then reconnect battery to reset
module, function door, if no function exists
check for loose wire connections, see Body
Diagnostic Manual for detailed procedures
Wiring problems (system or
vehicle)
Troubleshoot using electrical schematics.
Refer to wiring diagrams
Door continues to open
during power mode
(runaway motor)
Failure of sliding door control or
body control module
Disconnect then reconnect battery to reset
module, function door, if no function exists
check for loose wire connections, see Body
Diagnostic Manual for detailed procedures
Failure of hold open latch assembly
Check wire/cable connections
Replace hold open latch, if necessary
Failure of drive assembly
Remove lower drive unit and check for no
drive condition
Wiring problems (system or
vehicle)
Troubleshoot using electrical schematics.
Refer to wiring diagrams
Door opens very slowly
Failure of door motor assembly
Check wire/cable connections
Replace motor assembly, if necessary
Binding or sticking of components
Establish location of binding and replace
necessary components
Squeaks, Noises and rattles
Foreign material in door
compartment
Remove foreign material
Loose components
Check and tighten loose components
Poor door track lubrication
Lubricate the front portions of the side door
tracks with
9
Door Ease
T9
or equivalent
RS
POWER SLIDING DOOR SYSTEM
8N - 27
POWER SLIDING DOOR SYSTEM (Continued)
STANDARD PROCEDURE
STANDARD PROCEDURE - POWER DOOR
LEARN CYCLE
Any time a power side door component is removed,
replaced, door adjustment is performed or diagnostic
trouble codes are addressed and erased, a learn cycle
must be performed. This learn cycle enables the
power side door control module to learn or relearn its
critical information (travel limits, resistance to door
travel, etc.) which allows it to perform properly and
safely. It also tells the technician that the system is
performing properly and is able to be returned to ser-
vice. To perform a power door learn cycle do the fol-
lowing:
(1) Obtain a DRB III
t scan tool.
Connect the DRB III
t to the vehicle and check for
any power side door system stored diagnostic trouble
codes, erase any stored codes. Operate the system
and check to see if any trouble codes return. If any
diagnostic trouble codes return, diagnose, correct and
erase the codes before performing the learn cycle. If a
DRB III
t scan tool is not available, the learn cycle
can be performed by opening and closing the power
side door using any of the normal open/close com-
mand switches. Be certain to cycle the side door
through a complete open and close cycle or the pro-
cedure will not be complete.
(2) Using the DRB III
t, Go into Test Routine
Menu and select a power open command.
(3) Select a power close command.
(4) The power side door learn cycle is complete.
NOTE: If the power side door will not complete a
full cycle, a problem exists with the power side
door system. Refer to Power Side Door Diagnosis
and Testing.
STANDARD PROCEDURE - PUSH-PIN
GROMMET REPLACEMENT
Vehicles equipped with a power sliding door utilize
push-pin grommets. These push-pin grommets are
used to hold and isolate the power sliding door motor
to and from the door inner panel. This secures the
door motor assembly to the inner panel and keeps
the audible motor vibrations to a minimum. If a
push-pin grommet shows signs of wear, it must be
replaced. Follow the procedure below if replacement
is necessary.
(1) Remove the door motor from the door inner
panel. (Refer to 8 - ELECTRICAL/POWER DOORS/
MOTOR - REMOVAL).
(2) Using a trim panel tool (special tool #C-4755)
or equivalent, remove the push-pin grommets from
the inner panel by pulling them straight out (Fig. 4).
(3) Install the replacement push-pin grommets in
the inner panel and install the door motor(Refer to 8
- ELECTRICAL/POWER DOORS/MOTOR - INSTAL-
LATION).
STANDARD PROCEDURE - SLIDING DOOR
ADJUSTMENT
In order for the power sliding door system to func-
tion
properly
the
door
must
move
freely
and
smoothly. The power sliding door system can accom-
modate for some minor changes in the effort required
to move the door. However, in extreme conditions the
door may need to be mechanically adjusted for proper
fit. (Refer to 23 - BODY/DOORS - SLIDING/SLID-
ING DOOR - ADJUSTMENTS).
If a problem exists with the power sliding door and
it is suspected to be extreme effort, check for proper
door alignment and adjustment first, then check the
door tracks and drive unit for free manual operation.
Use a known good vehicle for side door comparison
data. Refer to the Side Door Adjustment procedure in
the Body section of the service manual for detailed
instructions.
Fig. 4 Side Door Motor push-pin grommets
1 - Push-Pin Grommets
2 - Side Door Inner Panel
8N - 28
POWER SLIDING DOOR SYSTEM
RS
POWER SLIDING DOOR SYSTEM (Continued)
SPECIFICATIONS
SPECIFICATIONS TABLE
TORQUE SPECIFICATIONS
DESCRIPTION
N·m
In. Lbs.
Door Latch
12
100
Lower Drive Unit
Allen Head
9
80
Lower Drive Unit
Screw
3
28
Lower Track Nuts
8
70
LATCH
DESCRIPTION
Vehicles equipped with a power side door or doors
utilize a power latch. One power latch is used for
each power door. The latch is located on the trailing
edge of the side door assembly (Fig. 5). This power
latch assembly is comprised of many different compo-
nents which have the ability to perform the power
cinch, release, lock, unlock and safety related opera-
tions. These components are the door latch, lock/un-
lock
actuator,
cinch/release
actuator
and
child
lockout, pawl, ratchet and handle switches. The pawl
and ratchet switches are used to indicate the primary
and secondary latched positions. The cinch latch also
provides a connection point for the interior handle,
exterior handle and hold open latch cables.
The power latch is a replaceable component. Con-
sult your Mopar parts catalog for specific part num-
bers.
OPERATION
The power latch performs the same operation as a
full manual door latch as well as power cinch,
release, lock and unlock operations. The power latch
mounted actuator cinches the door closed and latches
it in its primary latched position. During a power
close cycle, the power cinch actuator will not operate
until the side door has reached its secondary latch
position (determined by pawl and ratchet switches).
During a power open cycle, the power release actua-
tor will stop once the side door has moved from pri-
mary latch position.
The power latch uses inputs from the lock/unlock
actuator, power side door control module and child
lockout, pawl, ratchet and handle switches to provide
safe power cinch and release operations. Refer to
Power Side Door Operation for additional informa-
tion.
REMOVAL
(1) Disconnect and isolate the negative battery
cable.
(2) Remove the appropriate side door trim panel.
Refer to the Body section for the procedure.
(3) Remove the weather shield if necessary. Refer
to the Body section for the procedure.
(4) Open the side door all the way and remove the
door latch retaining bolts (Fig. 6).
(5) Partially close the door and pull the latch
assembly out of the side door inner panel.
(6) Disconnect all electrical connectors leading to
the latch assembly.
(7) Disconnect the inside and outside handle cables
from the latch assembly. Refer to the Body Section of
the service manual for the procedure.
(8) Disconnect the hold open latch cable from the
latch assembly. Refer to the Body Section of the ser-
vice manual for the procedure.
(9) Disconnect lock actuator link rod from the
latch assembly.
(10) Remove the latch assembly from the vehicle.
INSTALLATION
(1) Position the latch assembly in the vehicle. Be
certain all latch mounted components are installed
on the replacement latch assembly. If not, transfer
components from the old latch to the new latch
assembly.
Fig. 5 Removing/Installing Power Latch in Sliding
Door
1 - Power Latch Assembly
RS
POWER SLIDING DOOR SYSTEM
8N - 29
POWER SLIDING DOOR SYSTEM (Continued)
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