FRONT SEAT CUSHION - OCS
REMOVAL
A non-calibrated Occupant Classification Module
(OCM) is the only component of the Occupant Clas-
sification System (OCS) that is available for separate
service replacement, as outlined in the procedures
that follow. The OCS components of the passenger
side front seat cushion including the cushion frame,
springs, pad, occupant detection bladder, pressure
sensor, seat cushion foam and the OCM are a factory-
calibrated and assembled unit. Once this unit is con-
nected
to
a
vehicle
electrically,
the
calibration
settings are uploaded from the OCM and stored in
the memory of the Airbag Control Module (ACM). If
only the OCM is subsequently replaced, the new,
non-calibrated OCM learns the proper calibration
settings from the ACM after it is connected to the
vehicle electrically.
If any of the remaining OCS components of the
passenger side front seat cushion require replace-
ment, they are serviced only as a factory-calibrated,
assembled, and tamper-evident service replacement
package. This package includes the assembled frame,
springs, pad, bladder, sensor, foam, wiring and a cal-
ibrated OCM. When installing this package, always
replace all of the existing components with the new
components as a unit. Do not attempt to separate or
disconnect any of the new OCS components con-
tained in the service replacement package from each
other, and do not attempt to reuse any of the
replaced components in this or any other vehicle.
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-
ger side front seat cushion unit with another com-
plete service replacement package.
WARNING:
TO
AVOID
PERSONAL
INJURY
OR
DEATH, ON VEHICLES EQUIPPED WITH AIRBAGS,
DISABLE THE SUPPLEMENTAL RESTRAINT SYS-
TEM
BEFORE
ATTEMPTING
ANY
STEERING
WHEEL, STEERING COLUMN, AIRBAG, OCCUPANT
CLASSIFICATION
SYSTEM,
SEAT
BELT
TEN-
SIONER,
IMPACT
SENSOR,
OR
INSTRUMENT
PANEL COMPONENT DIAGNOSIS OR SERVICE.
DISCONNECT AND ISOLATE THE BATTERY NEGA-
TIVE (GROUND) CABLE, THEN WAIT TWO MINUTES
FOR THE SYSTEM CAPACITOR TO DISCHARGE
BEFORE PERFORMING FURTHER DIAGNOSIS OR
SERVICE. THIS IS THE ONLY SURE WAY TO DIS-
ABLE THE SUPPLEMENTAL RESTRAINT SYSTEM.
FAILURE TO TAKE THE PROPER PRECAUTIONS
COULD RESULT IN ACCIDENTAL AIRBAG DEPLOY-
MENT.
WARNING:
TO
AVOID
PERSONAL
INJURY
OR
DEATH ON VEHICLES EQUIPPED WITH THE OCCU-
PANT CLASSIFICATION SYSTEM (OCS), ONLY THE
OCCUPANT CLASSIFICATION MODULE (OCM) AND
THE SEAT CUSHION TRIM MAY BE SERVICED SEP-
ARATELY. ALL OTHER COMPONENTS OF THE PAS-
SENGER SIDE FRONT SEAT CUSHION ASSEMBLY
MUST BE SERVICED ONLY AS A COMPLETE FAC-
TORY-CALIBRATED, ASSEMBLED AND TAMPER-EV-
IDENT SERVICE REPLACEMENT PACKAGE. THIS
PACKAGE INCLUDES THE FRAME, SPRINGS, PAD,
BLADDER, SENSOR, FOAM, WIRING AND A CALI-
BRATED OCM. WHEN INSTALLING THIS PACKAGE
ALWAYS REPLACE ALL OF THE EXISTING COMPO-
NENTS WITH THE NEW COMPONENTS AS A UNIT.
DO NOT ATTEMPT TO SEPARATE OR DISCONNECT
ANY OF THE NEW OCS COMPONENTS IN THE SER-
VICE
REPLACEMENT
PACKAGE
FROM
EACH
OTHER, AND DO NOT ATTEMPT TO REUSE ANY OF
THE REPLACED COMPONENTS IN THIS OR ANY
OTHER VEHICLE. FAILURE TO TAKE THE PROPER
PRECAUTIONS COULD RESULT IN FAILURE OF
THE PASSENGER AIRBAG TO DEPLOY WHEN
REQUIRED, OR IN PASSENGER AIRBAG DEPLOY-
MENT WHEN NOT REQUIRED.
(1) Remove seat cushion side covers, and leave
connector connected, if equipped. (Refer to 23 -
BODY/SEATS/FRONT
SEAT
CUSHION
SIDE
COVER - REMOVAL)
(2) Remove seat track front and rear covers if
equipped. (Refer to 23 - BODY/SEATS/SEAT TRACK
REAR COVER - REMOVAL) and (Refer to 23 -
BODY/SEATS/SEAT
TRACK
FRONT
COVER
-
REMOVAL)
(3) If equipped, open storage bin to access front
pan bolts.
(4) Remove bolts attaching seat cushion pan to
seat track.
(5) Disconnect wire connectors, if equipment.
(6) Remove seat cushion from seat.
(7) Disengage J-strap retainers holding seat cover
to cushion.
(8) Remove seat cushion pan from cover and pad.
INSTALLATION
A non-calibrated Occupant Classification Module
(OCM) is the only component of the Occupant Clas-
sification System (OCS) that is available for separate
service replacement, as outlined in the procedures
that follow. The OCS components of the passenger
side front seat cushion including the cushion frame,
springs, pad, occupant detection bladder, pressure
sensor, seat cushion foam and the OCM are a factory-
calibrated and assembled unit. Once this unit is con-
nected
to
a
vehicle
electrically,
the
calibration
RS
SEATS
23 - 143