Ford Fusion Manuals

Ford Fusion: Supplemental Restraint System / Occupant Classification System (OCS) Sensor. Removal and Installation

Ford Fusion 2013–2020 Service Manual / Body and Paint / Body and Paint / Supplemental Restraint System / Occupant Classification System (OCS) Sensor. Removal and Installation

Removal

NOTICE: To prevent system failure, carry out the OCS reset when a front passenger seat cushion is disassembled, a new trim cover is installed or an OCS service kit is installed. Use a scan tool to carry out the OCS reset command.

NOTICE: The cushion heater mat on a front outboard passenger seat is not serviced separately. If a new cushion heater mat is needed on the front passenger seat, install an OCS service kit equipped with a heater mat. Failure to follow this instruction may result in incorrect operation of the OCS.

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

NOTE: Removal steps in this procedure may contain installation details.

  1. Remove the front seat cushion cover.
    Refer to: Front Seat Cushion Cover (501-10A Front Seats, Removal and Installation).
  1. NOTICE: Using excessive force when bending the bracket can damage the OCS sensor housing.

    NOTE: Follow the unique instructions or graphic for this step in installation.

    Disconnect the electrical connector, bend the bracket tab away and slide the OCS sensor off the bracket.
Ford Fusion. Occupant Classification System (OCS) Sensor. Removal and Installation
  1. If equipped with heated seats.
    Disconnect and position the heated seat wire harness aside.
Ford Fusion. Occupant Classification System (OCS) Sensor. Removal and Installation
  1. If equipped with original equipment (OE) OCS.
    Remove the cushion foam and cover as an assembly.
Ford Fusion. Occupant Classification System (OCS) Sensor. Removal and Installation
  1. NOTE: Original equipment (OE) OCS shown, service kit similar.

    Remove the pin-type retainers.
Ford Fusion. Occupant Classification System (OCS) Sensor. Removal and Installation
  1. NOTE: Note the location of the OCS hose and heater mat pigtail (if equipped) as it passes through the seat springs for proper installation.

    Route out the OCS hose, sensor and heater mat pigtail (if equipped) from between the seat cushion support wires.
Ford Fusion. Occupant Classification System (OCS) Sensor. Removal and Installation

Installation

  1. NOTICE: Inspect the OCS bladder, seat cushion pan and support assembly for any foreign objects before installing the OCS to the seat cushion pan. Remove any foreign objects. Failure to follow these instructions may result in incorrect operation of the OCS and may cause system failure.

    To install, reverse the removal procedure.
    Bend the OCS sensor bracket tab back.
Ford Fusion. Occupant Classification System (OCS) Sensor. Removal and Installation
  1. Install the passenger seat cushion cover. Do not prove out the SRS at this time.
    Refer to: Front Seat Cushion Cover (501-10A Front Seats, Removal and Installation).
  1. Ford Fusion. Occupant Classification System (OCS) Sensor. Removal and Installation  WARNING: Occupant Classification System (OCS) parts are calibrated as an assembly and must only be replaced in the configuration they are sold. Never separate parts of an assembly. Failure to follow this instruction may result in incorrect operation of the OCS and increases the risk of serious personal injury or death in a crash.

    Ford Fusion. Occupant Classification System (OCS) Sensor. Removal and Installation  WARNING: Make sure the front passenger seat repair is complete, the seat and all attached components (head restraint, seat side shield, etc.) are correctly assembled, and the seat is correctly installed to the vehicle before using System Reset to rezero the seat weight. Failure to follow these instructions may result in incorrect operation of the occupant classification system (OCS) and increases the risk of serious personal injury or death in a crash.

    NOTICE: To prevent system failure, take the following precautions before carrying out the OCS reset.

    • Make sure the voltage to the OCSM is greater than 8 volts and less than 18 volts.
    • Make sure the OCS is not below 42.8 °F ( 6 °C) or above 96.7 °F ( 36 °C) when initiating the OCS reset process. If the vehicle has been exposed to extreme cold or hot temperatures, the vehicle must be exposed and kept at a temperature between 42.8 °F ( 6 °C) to 96.7 °F ( 36 °C) for a minimum of 30 minutes.
    • Make sure nothing is present on the passenger seat before and during the OCS reset process.
    • Prior to carrying out the OCS reset, make sure a minimum of 8 seconds has elapsed after cycling the ignition switch on.
    Using a diagnostic scan tool, carry out the OCS reset. Cycle the ignition switch after the OCS reset.
  1. If the first system reset attempt was successful, proceed to prove out the SRS.
  1. If the first system reset attempt was not successful, carry out a thorough visual inspection of the OCS connector and wiring for damage, pressure sensor hose for kinks and or damage, and seat-related wiring harness and body wiring harness terminals and connectors for damage. Repair any concerns found and proceed to the next step.
  1. Carry out a second OCS reset. Cycle the ignition switch after the OCS reset. If the second attempt is unsuccessful, install a new OCS service kit.
    Refer to: Occupant Classification System (OCS) Sensor (501-20B Supplemental Restraint System, Removal and Installation).
  1. Prove out the SRS by turning the ignition from ON to OFF. Wait 10 seconds, then turn the ignition back to ON and monitor the airbag warning indicator with the airbags installed. The airbag warning indicator illuminates continuously for approximately 6 seconds and then turns off. If a SRS fault is present, the airbag warning indicator will fail to light, remain lit continuously, or flash.
  1. The flashing might not occur until approximately 30 seconds after the ignition has been turned from OFF to ON. This is the time required for the RCM to complete the testing of the SRS. If the airbag warning indicator is inoperative and a SRS fault exists, a chime sounds in a pattern of 5 sets of 5 beeps. If this occurs, diagnose and repair the airbag warning indicator and any SRS faults.
  1. Clear all continuous Diagnostic Trouble Codes (DTCs) from the RCM and OCSM using a diagnostic scan tool.

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