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Home >> Ford >> 2001 >> Mustang Base, 2D Convertible, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 925 (Supplemental Inflatable Restraint System) >> Removal And Installation >> Occupant Classification Sensor >> Removal

Occupant Classification Sensor: Removal

WARNING: This page is about a different car, the 2005 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.
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: To reduce the risk of personal injury, do not use any memory saver devices.
WARNING: Do not separate components.
CAUTION: It is necessary to rezero the OCS system when a front passenger seat cushion is disassembled, a new trim cover installed, or an OCS service kit is installed. A scan 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: 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, electronic control unit and seat wiring harness) must be installed as an assembly.
NOTE: To identify between a production OCS system and a service OCS system (OCS service kit) inspect the electronic control unit (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 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 SRS must be fully operational and free of faults before releasing the vehicle to the customer.
NOTE: Repair is made by installing a new part only. If the new part does not correct the condition, install the original part and perform the diagnostic procedure again.

    All seats 

  1. Position the seat to access all the seat track-to-floor pan bolts.
  2. Depower the supplemental restraint system (SRS). For additional information, refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
  3. Remove the passenger seat. For additional information, refer to SEAT -- FRONT .
  4. Remove the seat backrest. For additional information, refer to SEAT BACKREST -- FRONT .
  5. Release the seat trim cover and foam pad.
    • Release the 5 J-clips and one pin-type retainer in the RH front corner.
      Fig 1: Releasing Seat Trim Cover And Foam Pad
      G03987451Courtesy of FORD MOTOR CO.
    6. 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.
  6. Separate the trim cover from the foam pad.
    • Release the hook and loop fasteners and remove the hog rings.
      Fig 2: Releasing Hook And Loop Fasteners
      G03987452Courtesy of FORD MOTOR CO.
    7. NOTE: Production pressure sensor shown, service kit pressure sensor similar.
    Fig 3: Removing Pressure Sensor From Bracket
    G03986979Courtesy of FORD MOTOR CO.
  7. Bend to release the retaining tab and remove the pressure sensor from the bracket.
  8. Release the wire routing clip and the electrical connector retainer from the bracket.
    Fig 4: Releasing Wire Routing Clip And Electrical Connector Retainer From Bracket
    G03987454Courtesy of FORD MOTOR CO.
    9. NOTE: Note position of wire routing for installation.
    Fig 5: Disconnecting Safety Belt Buckle Switch Electrical Connector
    G03987455Courtesy of FORD MOTOR CO.
  9. Disconnect the safety belt buckle switch electrical connector and release the connector retainer from the seat cushion pan.

    10. Seats with a production occupant classification sensor (OCS) 

  10. Release the 2 pin-type retainers and remove the 4 nuts and the seat track assembly.
    Fig 6: Removing Seat Track Assembly Nuts
    G03987456Courtesy of FORD MOTOR CO.

    11. Seats with a service kit OCS 

  11. Position aside the OCS bladder and foam pad assembly and remove the 4 nuts (2 rear shown) and the seat track assembly.
    Fig 7: Removing Seat Track Assembly Nuts
    G03987457Courtesy of FORD MOTOR CO.

    12. All seats 

    NOTE: Production electronic control unit (ECU) shown, service kit ECU similar.
    Fig 8: Removing Rivets Of ECU
    G03986978Courtesy of FORD MOTOR CO.
  12. Remove the rivets and separate the ECU from the seat cushion pan bracket.
    13. NOTE: Note position of hose routing for installation.
  13. Remove the OCS from the seat cushion pan.
    • Feed the hose, pressure sensor, wire harness, electrical connector and ECU through the opening in the seat cushion pan assembly.
      Fig 9: Removing The OCS From The Seat Cushion Pan
      G03986980Courtesy of FORD MOTOR CO.
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