Occupant Classification Sensor - Service Kit: Removal

Fig 1: Removing & Installing Occupant Classification Sensor - Service Kit (1 Of 2)

Courtesy of FORD MOTOR CO.

Fig 2: Removing & Installing Occupant Classification Sensor - Service Kit (2 Of 2)

Courtesy of FORD MOTOR CO.

WARNING: Always wear safety glasses when repairing an air bag supplemental restraint system (SRS) vehicle and when handling an air bag module. This will reduce the risk of injury in the event of an accidental deployment.

WARNING: Never probe the connectors on the air bag module. Doing so can result in air bag deployment, which can result in personal injury.

WARNING: The safety belt pretensioner is a pyrotechnic device. Always wear safety glasses when repairing an air bag equipped vehicle and when handling a safety belt buckle pretensioner or safety belt retractor pretensioner. Never probe a pretensioner electrical connector. Doing so could result in pretensioner or air bag deployment and could result in personal injury.

WARNING: To reduce the risk of personal injury, do not use any memory saver devices.

CAUTION: There are three occupant classification sensor (OCS) system service kits available for this vehicle (base seat, heated seat and climate controlled seat). Always make sure the correct OCS service kit is installed.

CAUTION: It is necessary to rezero the OCS system when a front passenger seat cushion is disassembled, a new trim cover installed, a seat side shield removed, or an OCS service kit is installed. A diagnostic tool is used to trigger the active command to carry out rezeroing of the OCS system.

NOTE: If a seat equipped with a supplemental restraint system (SRS) component is being serviced, the SRS must be depowered.

NOTE: The air bag warning lamp illuminates when the RCM fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a supplemental restraint system (SRS) fault.

NOTE: The heated seat element on the front passenger seat cushion is not serviceable separately. If a new heated seat element is needed on the front passenger seat cushion a new occupant classification sensor (OCS) service kit, equipped with a heated seat element, must be installed.

NOTE: Occupant classification sensor (OCS) system components (seat cushion foam pad, bladder with pressure sensor and electronic control unit) are calibrated to each other and are serviced as an assembly. The OCS system components are not to be installed separately. If a new OCS system, OCS system component or seat cushion foam pad are needed, a new OCS system service kit (seat cushion foam pad, bladder with pressure sensor and electronic control unit) must be installed as an assembly.

NOTE: To identify between a production OCS system and a service OCS system (OCS service kit) inspect the ECU electrical connector. A production OCS system allows the disconnect of the ECU electrical connector. A service OCS system (OCS service kit) has the ECU electrical connector glued to the ECU, it cannot and should not be disconnected or altered.

NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

NOTE: Repair is made only by installing a new assembly. If the new assembly does not correct the condition, install the original equipment and carry out the diagnostic procedure again.

Manual seats

Depower the supplemental restraint system (SRS). Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .

Power seats

Remove the passenger seat and depower the system. For additional information, refer to SEATING .
Release the recliner handle cover tab and remove the cover.
Remove the 3 screws and the RH side shield.
Disconnect the power seat switch electrical connector.
Remove the 3 screws and the LH side shield.

Seats with side air bags

Separate the side air bag module electrical connector and wire harness pin-type retainers from the seat riser and cushion pan.

Power seats

Separate the climate control duct and disconnect the backrest thermal electric device electrical connector (if equipped).

Fig 3: Locating Backrest Electrical Connector And Backrest Climate Controlled Seat Duct
Courtesy of FORD MOTOR CO.
Disconnect the 2 backrest heated seat element electrical connectors (if equipped).
Remove the 4 backrest-to-seat track bolts.
Remove the seat backrest assembly.

All seats

Disconnect and release any remaining electrical connectors and pin-type retainers necessary to remove the seat cushion pan from the seat track (if equipped).
Remove the 4 cushion-to-seat track bolts.
Remove the seat cushion assembly.
Release the seat cushion trim cover J-clips from the seat cushion pan.
- If equipped, disconnect the seat cushion heated seat element electrical connector.
Fig 4: Releasing Seat Cushion Trim Cover J-Clips From Seat Cushion Pan
Courtesy of FORD MOTOR CO.

CAUTION: Use care when separating the seat upholstery from the hook and loop strip, or the hook and loop strip can be torn from the seat cushion foam pad.

Fig 5: Removing Hog Rings

Courtesy of FORD MOTOR CO.

If installing a new OCS service kit or installing a new seat cushion trim cover, remove the hog rings and separate the trim cover from the foam pad.
- After removing the hog rings, place a hand between the trim cover and foam pad and carefully separate the hook and loop strips.

NOTE: The OCS service kit connector connects to the seat wiring harness.

Fig 6: Removing Retainers From Their Wiring Harness

Courtesy of FORD MOTOR CO.

Disconnect the OCS service kit connector and remove any retainers from their wiring harness.

CAUTION: Care must be taken to prevent damage to the seat cushion pan when removing the rivets.

Remove the 2 OCS electronic control unit (ECU) rivets.
Remove the OCS ECU from the bracket.
Remove the OCS.
- Feed the OCS components (hose, transducer, wire harness, electronic control unit (ECU) and connectors) through the seat cushion pan opening and remove as an assembly with the bladder.
Fig 7: Removing OCS
Courtesy of FORD MOTOR CO.