2005 CHRYSLER CARAVAN child restraint

anchor. The OCM then monitors the return voltage
from each of the sensors. The bladder pressure sen-
sor input allows the OCM to determine whether the
passenger front seat is occupied and the relative size
of the occupant by providing a weight-sensing refer-
ence to the load on the seat cushion. The belt tension
sensor provides an additional logic input to the OCM
microprocessor that allows it to distinguish between
the lower seat belt cinch loads of a belted occupant
and the higher loads associated with a belted child
seat.
Pre-programmed decision algorithms and OCS cal-
ibration allow the OCM microprocessor to determine
when the seat cushion load as signaled by the blad-
der pressure sensor and the seat belt cinch load as
signaled by the belt tension sensor indicate that pas-
senger airbag protection is appropriate. When the
programmed conditions are met, the OCM sends the
proper electronic occupant classification messages
over the PCI data bus to the Occupant Restraint
Controller (ORC), and the ORC enables or disables
the deployment circuits for the passenger front sup-
plemental restraints. The ORC also provides a con-
trol output for the Passenger Airbag Disabled (PAD)
indicator in the instrument panel center stack, based
upon the electronic occupant classification messages
it receives from the OCM.
The OCM microprocessor continuously monitors all
of the OCS electrical circuits and components to
determine the system readiness. If the OCM detects
a monitored system fault, it sets an active and stored
Diagnostic Trouble Code (DTC) and sends the appro-
priate electronic messages to the ORC over the PCI
data bus. Then the ORC sets a DTC and sends mes-
sages to control the airbag indicator operation
accordingly. An active fault only remains for the
duration of the fault, or in some cases for the dura-
tion of the current ignition switch cycle, while a
stored fault causes a DTC to be stored in memory by
the OCM and the ORC. For some DTC's, if a fault
does not recur for a number of ignition cycles, the
OCM will automatically erase the stored DTC. For
other internal faults, the stored DTC is latched for-
ever.
The OCM receives battery current from an IPM
high side driver (Run/Start). The OCM receives
ground through a ground circuit of the body wire
harness, which it shares with the ORC. These con-
nections allow the OCM to be operational whenever
the ignition switch is in the Start or ON positions.
To diagnose and test the OCS, use a scan tool and
the appropriate diagnostic information.
REMOVAL
Once any of the original factory-installed compo-
nents except the Occupant Classification Module(OCM) have been replaced with the service replace-
ment package components, the OCM can only be ser-
viced by replacing the entire passenger front seat
cushion unit with another complete service replace-
ment package (Refer to 23 - BODY/SEATS/SEAT
CUSHION - FRONT - REMOVAL).
WARNING: Never replace both the Occupant
Restraint Controller (ORC) and the Occupant Clas-
sification Module (OCM) at the same time. If both
require replacement, replace one, then perform the
Airbag System test (Refer to 8 - ELECTRICAL/RE-
STRAINTS - DIAGNOSIS AND TESTING - AIRBAG
SYSTEM) before replacing the other. Both the ORC
and the OCM store Occupant Classification System
(OCS) calibration data, which they transfer to one
another when one of them is replaced. If both are
replaced at the same time, an irreversible fault will
be set in both modules and the OCS may malfunc-
tion and result in personal injury or death.
(1) Disconnect and isolate the battery negative
cable.
(2)
WARNING: Wait two minutes for the airbag system
reserve capacitor to discharge before beginning
any airbag system or component service. Failure to
do so may result in accidental airbag deployment,
personal injury or death.
(3) Reach under the front edge of the passenger
side front seat cushion to access and remove the lock
pin from the connector lock tower on the Occupant
Classification Module (OCM) (Fig. 36).
(4) Disconnect the passenger front seat wire har-
ness connector for the OCM.
(5) Remove the two screws that secure the OCM to
the OCM bracket.
(6) Remove the OCM from under the passenger
front seat.
INSTALLATION
WARNING: To avoid personal injury or death on
vehicles equipped with the Occupant Classification
System (OCS), only the Occupant Classification
Module (OCM) and the seat cushion trim may be
serviced separately. All other components of the
passenger front seat cushion must be serviced only
as a complete factory-calibrated, assembled and
tamper-evident service replacement package.
Once any of the original factory-installed compo-
nents except the OCM have been replaced with the
service replacement package components, the OCM
can only be serviced by replacing the entire passen-
8O - 26 RESTRAINTSRS
OCCUPANT CLASSIFICATION MODULE (Continued)

(28) Install two right side nuts at instrument
panel center stack support to floor.
(29) Install two left side nuts at instrument panel
center stack support to floor.
(30) Connect the two wiring connectors to lower
instrument panel cubby bin at bottom of center stack
and install six screws.
(31) Align left side upper A-pillar trim over retain-
ing slots and firmly snap into place.
(32) Install four nuts at brake pedal support
bracket to instrument panel.
(33) Align left A-pillar lower extension trim over
retaining slots and firmly snap into place.
(34) Install knee blocker and retaining screws.
(35) Install Data Link Connector (DLC) into bot-
tom of knee blocker.
(36) Align parking brake lever and snap into place
on knee blocker reinforcement.
(37) Install lower steering column cover and four
retaining screws
(38) Align left cowl panel over retaining slots and
firmly snap into place.
(39) Align left front door sill plate over retaining
slots and firmly snap into place.
(40) Install center console bin between front seats.
WARNING: Do not connect the battery negative
cable (Refer to 8 - ELECTRICAL/RESTRAINTS -
DIAGNOSIS AND TESTING - AIRBAG SYSTEM). Per-
sonal injury or death may result if the system test
is not performed first.
(41) Close hood.
(42) Verify system and vehicle operation.
PASSENGER AIRBAG
DISABLED INDICATOR
DESCRIPTION
Vehicles equipped with the Occupant Classification
System (OCS) include a Passenger Airbag Disabled
(PAD) indicator (Fig. 40) which is located in the
instrument panel center stack, above the radio. The
PAD indicator is present only in vehicles equipped
with the OCS.The PAD indicator consists of a molded plastic
housing with an integral connector at the back. An
amber Light Emitting Diode (LED) behind the lens
causes the ªPASS AIR BAG OFFº text and icon to
appear silhouetted against an amber field through
the translucent lens when the indicator is illumi-
nated from behind by the LED. The PAD indicator is
available for separate service replacement.
OPERATION
In vehicles equipped with the Occupant Classifica-
tion System (OCS), the Passenger Airbag Disabled
(PAD) indicator gives an indication when the passen-
ger airbag and seat belt tensioner deployment cir-
cuits are disabled by the Occupant Restraint
Controller (ORC). The PAD indicator is controlled by
a transistor within the ORC through a hard wired
output based upon ORC programming and electronic
occupant classification messages received by the ORC
over the Programmable Communications Interface
(PCI) data bus from the Occupant Classification
Module (OCM). The PAD indicator Light Emitting
Diode (LED) is completely controlled by the ORC.
The LED receives a battery current input on the
fused ignition switch output (RUN/START) circuit.
Therefore, the LED will always be OFF when the
ignition switch is in any position except ON or
START. The LED only illuminates when it is pro-
vided a path to ground by the ORC transistor. The
ORC will turn on the PAD indicator for the following
reasons:
²Bulb Test- Each time the ignition switch is
turned to the ON position the PAD indicator is illu-
minated for about six seconds.
²Child Seat Detected Occupant Classifica-
tion Message- Each time the ORC receives a mes-
sage from the OCM indicating a child seat has been
detected in the passenger front seat, the passenger
airbag and seat belt tensioner deployment circuits
are deactivated and the PAD indicator will be illumi-
nated. The indicator remains illuminated until the
ORC receives an occupant classification message
indicating that:
²The passenger front seat is empty.
²The seat is occupied by a load equal to or
greater than a fifth percentile female.
²OR,Until the ignition switch is turned to the
OFF position, whichever of these three occurs first.
²Load Less Than Fifth Percentile Female
Occupant Classification Message- Each time the
ORC receives a message from the OCM indicating
that a load less than a fifth percentile female has
been detected in the passenger front seat, the pas-
senger airbag and seat belt tensioner deployment cir-
cuits are deactivated and the PAD indicator will be
illuminated. The indicator remains illuminated until:
Fig. 40 PASSENGER AIRBAG DISABLED (PAD)
INDICATOR
RSRESTRAINTS8O-33
PASSENGER AIRBAG (Continued)

SEAT BACK COVER/FOAM - THIRD ROW -
FOLD-IN-FLOOR
REMOVAL............................155
INSTALLATION........................156
SEAT BACK FRAME - THIRD ROW - FOLD-IN-
FLOOR
REMOVAL............................156
INSTALLATION........................157
SEAT BELT CENTER LAP BELT - FOLD-IN-
FLOOR
REMOVAL............................157
INSTALLATION........................157
SEAT BACK PANEL - THIRD ROW -FOLD-IN-
FLOOR
REMOVAL............................158
INSTALLATION........................158SEAT BACKSTOW STRAP - THIRD ROW -
FOLD-IN-FLOOR
REMOVAL............................158
INSTALLATION........................158
SEAT CUSHION COVER/FOAM - THIRD ROW -
FOLD-IN-FLOOR
REMOVAL............................159
INSTALLATION........................159
SIDE SHIELD CUP HOLDER - FOLD-IN-FLOOR
REMOVAL............................160
INSTALLATION........................160
SEAT RECLINER/FOLD FORWARD
MECHANISM -THIRD ROW -FOLD-IN-FLOOR
REMOVAL............................160
INSTALLATION........................160
CHILD SEAT MODULE, BENCH
SEAT
REMOVAL
(1) Close child restraint seat.
(2) Remove seat back cover. (Refer to 23 - BODY/
SEATS/SEAT BACK COVER - REMOVAL).
(3) Remove screws attaching child restraint seat
module hinges to seat back frame lower rail (Fig. 1).
(4) Return seat back to upright position.
(5) Disengage push in fasteners attaching upper
bolster to child restraint seat module (Fig. 2).
(6) Remove screws attaching top of module to seat
back frame upper rail (Fig. 3).
(7) Remove child restraint seat module from seat
back (Fig. 4).
Fig. 1 CHILD RESTRAINT SEAT LOWER HINGE
1 - CHILD RESTRAINT SEAT MODULE
2 - LOWER HINGE
Fig. 2 CHILD RESTRAINT SEAT UPPER BOLSTER
1 - UPPER BOLSTER
2 - CHILD RESTRAINT SEAT MODULE
3 - PUSH-IN FASTENER
Fig. 3 CHILD RESTRAINT SEAT UPPER SCREWS
1 - UPPER BOLSTER
2 - CHILD RESTRAINT SEAT MODULE
23 - 104 SEATSRS

INSTALLATION
INSTALLATION
(1) Place child restraint seat module in position on
seat back (Fig. 4).
(2) Position seat back hinge interlock lever over
the top of the outboard child restraint seat hinge
(Fig. 5).
(3) Install screws attaching child restraint seat
module hinges to seat back frame lower rail (Fig. 1).
(4) Install screws attaching top of module to seat
back frame upper rail (Fig. 3). Tighten nuts to 7 N´m
(62 in. lbs.) torque.
(5) Install push in fasteners attaching upper bol-
ster to child restraint seat module (Fig. 2).(6) Return seat back to folded position.
(7) Install seat back cover. (Refer to 23 - BODY/
SEATS/SEAT BACK COVER - INSTALLATION).
(8) Check belt for smooth operation and verify
interlock operation. Recliner should not operate with
child seat deployed.
SYNCHRONIZING CABLE ADJUSTMENT
NOTE: Bench seats equipped with child restraint
seats have an interlock feature that will not allow
the seat back to fold forward with the child seat
open.
If the seat back hinges do not release at the same
time the synchronizing cable must be adjusted.
(1) Remove seat from vehicle. Refer to Owner's
Manual for proper procedures.
(2) Disengage cable from the recline mechanism by
pulling the cable end toward the front of the seat
(Fig. 6).
(3) Pull U-shaped locking tab on self-adjusting
mehcanism to disengage auto-adjust feature.
(4) Reattach self-adjusting mechanism, pulling
against spring load to tighten cable.
(5) Press locking tab onto the adjusting mecha-
nism to lock into place.
Fig. 4 CHILD RESTRAINT SEAT MODULE
1 - 1ST REAR SEAT BACK
2 - CHILD RESTRAINT SEAT MODULE
3 - SEAT BACK HINGE INTERLOCK LEVER
Fig. 5 INTERLOCK LEVER
1 - CHILD RESTRAINT SEAT HINGE
2 - SEAT BACK HINGE INTERLOCK LEVER
3 - 1ST REAR SEAT BACK
4 - SEAT BACK FRAME RAIL
RSSEATS23 - 105
CHILD SEAT MODULE, BENCH SEAT (Continued)

QUAD CHILD SEAT
REMOVAL
(1) Remove the seat. Refer to Owner's Manual for
proper procedures.
(2) Remove seat back cover (Fig. 7).
(3) Remove fasteners attaching quad child seat to
the seat (Fig. 8).
(4) Remove quad child seat from the seat.
INSTALLATION
(1) Place quad child seat in position.
(2) Install fasteners and tighten to 13.5 N´m (10 ft.
lbs.)
(3) Install seat back cover.
(4) Install seat in vehicle.
HEADREST
REMOVAL
(1) Lift head restraint to top of travel.
(2) Depress lock button on side of sleeve at top of
seat back (Fig. 9).
(3) Pull head restraint from top of seat back.
INSTALLATION
(1) Place head restraint in position.
(2) Depress lock button on side of sleeve at top of
seat back.
(3) Push heat restraint down into position.
Fig. 6 SYNCHRONIZING CABLE
1 - CABLE END
2 - LOCKING TAB
3 - SETBACK HINGE
Fig. 7 SEAT BACK COVER
1 - SEAT BACK COVER
Fig. 8 CHILD RESTRAINT SEAT BACK
1 - FASTENERS
2 - J-STRAPS
3 - FASTENERS
23 - 106 SEATSRS
CHILD SEAT MODULE, BENCH SEAT (Continued)

INSTALLATION
(1) Place prop rod into position.
(2) Install lower attaching screw (Fig. 78).
(3) Install prop rod top screw (Fig. 77).
(4) Install lower front shield (Fig. 76).
BUCKET SEAT BACK - QUAD
BUCKET
REMOVAL
NOTE: Quad seats equipped with child restraint
seats have an interlock feature that will not allow
the seat back to fold forward with the child seat
open.
(1) Remove the headrests. (Refer to 23 - BODY/
SEATS/HEADREST - REMOVAL)
(2) Remove the armrests, if equipped. (Refer to 23
- BODY/SEATS/ARMREST - REMOVAL)
(3) Remove the seat back hinge covers. (Refer to
23 - BODY/SEATS/SEAT BACK HINGE COVERS -
QUAD BUCKET, 50/50 SPLIT, BENCH - REMOVAL)
(4) Disconnect the child seat synchronizer cable, if
equipped. (Fig. 79)
(5) Remove the seat back frame bolts and remove
the seat back. (Fig. 80)
Fig. 77 PROP ROD TOP SCREW
1 - ATTACHING SCREW
Fig. 78 PROP RODS
1 - ATTACHING PIN
2 - ATTACHING SCREW
Fig. 79 QUAD SEAT SYNCHRONIZER CABLE
1 - CABLE END CONNECTOR
2 - SYNCHRONIZER CABLE
3 - SEATBACK HINGE
23 - 140 SEATSRS
SEAT PROP ROD - SECOND ROW - FOLD-IN-FLOOR (Continued)

INSTALLATION
(1) On three pass seats place seat back panel in
position on seat and install the push-in fasteners
(Fig. 87).
(2) On two pass seats engage the two upper hooks
of the panel, place the panel into position and install
the push-in fasteners (Fig. 88).
(3) On third row bench seats install grocery bag
holder. (Refer to 23 - BODY/SEATS/PLASTIC GRO-
CERY BAG RETAINER - INSTALLATION)
SEAT CUSHION COVER - QUAD
BUCKET, 50/50 SPLIT, BENCH
REMOVAL
BENCH SEAT & 50/50 SPLIT
(1) Remove seat from vehicle. Refer to Owner's
Manual for proper procedures.
(2) Remove seat back. (Refer to 23 - BODY/SEATS/
BENCH SEAT BACK - REMOVAL)
(3) Remove seat risers. (Refer to 23 - BODY/
SEATS/BENCH SEAT RISER - 50/50 SPLIT -
REMOVAL) and (Refer to 23 - BODY/SEATS/BENCH
SEAT RISER - FIRST ROW - REMOVAL) and (Refer
to 23 - BODY/SEATS/BENCH SEAT RISER - SEC-
OND ROW - REMOVAL)
(4) Disconnect the cushion cover J-straps.
(5) Remove seat cushion cover from seat cushion.
QUAD BUCKET
(1) Remove seat from vehicle. Refer to Owner's
Manual for proper procedures.
(2) Remove seat back.(Refer to 23 - BODY/SEATS/
BUCKET SEAT BACK - QUAD BUCKET -
REMOVAL)
(3) Remove seat risers. (Refer to 23 - BODY/
SEATS/QUAD BUCKET SEAT RISER - REMOVAL)
(4) Disconnect the cushion cover J-straps.
(5) Remove seat cushion cover from seat cushion.
INSTALLATION
BENCH SEAT & 50/50 SPLIT
(1) Position the seat cushion cover on the cushion.
(2) Engage the J-strap retainers.
(3) Steam wrinkles from seat cushion, if necessary.
(4) Install seat risers. (Refer to 23 - BODY/SEATS/
BENCH SEAT RISER - 50/50 SPLIT - INSTALLA-
TION) and (Refer to 23 - BODY/SEATS/BENCH
SEAT RISER - SECOND ROW - INSTALLATION)
and (Refer to 23 - BODY/SEATS/BENCH SEAT
RISER - THIRD ROW - INSTALLATION)
(5) Install seat back. (Refer to 23 - BODY/SEATS/
BENCH SEAT BACK - INSTALLATION)
(6) Install seat into vehicle.
QUAD BUCKET
(1) Position the seat cushion cover on the cushion.
(2) Engage the J-strap retainers.
(3) Steam wrinkles from seat cushion, if necessary.
(4) Install seat risers. (Refer to 23 - BODY/SEATS/
QUAD BUCKET SEAT RISER - INSTALLATION)
(5) Install seat back. (Refer to 23 - BODY/SEATS/
BUCKET SEAT BACK - QUAD BUCKET - INSTAL-
LATION)
(6) Install seat into vehicle.
Fig. 87 THREE - PASS BENCH SEAT BACK PANEL
1 - SEAT BACK REAR PANEL
2 - FIRST REAR CHILD RESTRAINT SEAT
Fig. 88 TWO - PASSENGER BENCH SEAT BACK
PANEL
1 - SEAT BACK REAR PANEL
2 - SEAT BACK
23 - 144 SEATSRS
BENCH SEAT BACK PANEL (Continued)

SEAT BACK HINGE COVERS -
QUAD BUCKET, 50/50 SPLIT,
BENCH
REMOVAL
(1) Remove seat from vehicle. Refer to Owner's
Manual for proper procedures.
(2) Remove screws attaching upper hinge cover to
seat back hinge (Fig. 91).
(3) Remove upper cover from seat back hinge.
(4) Remove screws attaching lower cover to seat
back hinge.
(5) Remove lower cover from hinge.
INSTALLATION
(1) Place lower cover in position on hinge.
(2) Install screws attaching lower cover to seat
back hinge (Fig. 91). Tighten screws to 2.3 N´m (20
in. lbs.) torque.
(3) Place upper cover in position on seat back
hinge.
(4) Install screws attaching upper hinge cover to
seat back hinge. Tighten screws to 2.3 N´m (20 in.
lbs.) torque.
(5) Install seat in vehicle.
BENCH SEAT BACK HINGE
REMOVAL
NOTE: Bench seats equipped with child restraint
seats have an interlock feature that will not allowthe seat back to fold forward with the child seat
open.
(1) Remove the bench seat back upper and lower
hinge covers. (Refer to 23 - BODY/SEATS/SEAT
BACK HINGE COVERS - 50/50 SPLIT, BENCH -
REMOVAL)
(2) Remove the seat back. (Refer to 23 - BODY/
SEATS/BENCH SEAT BACK - REMOVAL)
(3) Remove bolts attaching seat back hinge to seat
cushion frame (Fig. 92).
(4) Remove seat back hinge from seat.
INSTALLATION
INSTALLATION
NOTE: Bench seats equipped with child restraint
seats have an interlock feature that will not allow
the seat back to fold forward with the child seat
open.
(1) Place hinge in position on seat.
(2) Engage synchronizing cable end into (clip on
left side) hinge latch release arm.
(3) Engage synchronizing cable housing into seat
back hinge.
(4) Place seat back hinge in position on seat.
(5) Install bolts attaching seat back hinge to seat
cushion frame. Tighten bolts to 48 N´m (35 ft. lbs.)
torque.
(6) Install shoulder bolts attaching seat back hinge
to seat back frame (Fig. 92). Tighten bolts to 34 N´m
(25 ft. lbs.) torque.(Refer to 23 - BODY/SEATS/
BENCH SEAT BACK - INSTALLATION)
Fig. 91 BENCH SEAT BACK HINGE COVERS -
TYPICAL
1 - UPPER COVER SCREWS
2 - LOWER COVER
3 - LOWER COVER SCREWS
4 - UPPER COVER
Fig. 92 BENCH SEAT BACK HINGE
1 - SEATBACK FRAME SHOULDER BOLTS
2 - SEAT CUSHION FRAME BOLTS
3 - SEATBACK HINGE
23 - 146 SEATSRS