Ford Focus manuals

Ford Focus Service Manual: Seat Cushion - Front

Ford Focus Service Manual / Body / Seating / Seats / Seat Cushion - Front

Special Tool(s)

Vehicle Communication Module (VCM) and Integrated Diagnostic System (IDS)
software with appropriate hardware, or equivalent scan tool

Disassembly

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.

NOTICE: To prevent system failure, it is necessary to carry out the Occupant Classification System (OCS) system reset when a front passenger seat cushion is disassembled, a new trim cover installed or an OCS system service kit is installed. A scan tool is used to carry out the OCS system reset command.

NOTE:

Occupant Classification System (OCS) system components, seat cushion foam pad, bladder with pressure sensor and Occupant Classification System Module (OCSM) , 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 OCSM must be installed as an assembly.

NOTE:

To identify between a production OCS system and an OCS system service kit, inspect the OCSM electrical connector.

A production OCS system allows the disconnection of the OCSM electrical connector.

An OCS system service kit has the electrical connector glued to the module, it cannot and should not be disconnected or altered.

NOTE:

For component identification and locations, refer to Seat — Exploded View, Front in this section.

All seats

  1. Remove the seat backrest. For additional information, refer to Seat Backrest — Front in this section.
  1. Remove the seat cushion cover. For additional information, refer to Seat Cushion Cover — Front in this section.

Passenger seat

  1. For disassembly of the passenger seat OCS system components (foam pad, OCS , OCSM and wire harness), refer to Occupant Classification Sensor in Section  501-20B.
  1. If 2-door passenger seat, detach the seat track release cable.
    • Detach the cable jacket from the clamp on the seat track.
    • Disconnect the cable from the seat track release mechanism.

Driver seat

  1. Remove the foam pad.
    • If equipped, disconnect the heater mat electrical connector and detach the wiring harness.
  1. Remove the seat position sensor. For additional information, refer to Section  501-20B.

All seats

  1. If equipped, disconnect and remove the heated seat relay.
  1. Disconnect and detach the safety belt buckle and pretensioner electrical connector.
  1. Remove the bolt and safety belt buckle and pretensioner.
    • For installation, align the anti-rotation pin.
    • To install, tighten to 40 Nm (30 lb-ft).
  1. Detach all remaining retainers and remove the wiring harness from the seat track.
    • Note the retainer locations and harness routing for correct installation.
  1. To assemble, reverse the disassembly procedure.
  1. Install the seat. If a passenger seat has been serviced, do not prove out the Supplemental Restraint System (SRS) at this time.

    For additional information, refer to Seat — Front in this section.

Passenger seat

  1. 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 carrying out the System Reset. 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.

    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.

    NOTICE: To prevent system failure, the following precautions must be taken before carrying out the Occupant Classification System (OCS) system reset:

    • Make sure the voltage to the Occupant Classification System Module (OCSM) is above 8 volts and less than 18 volts.
    • Make sure the OCS system is not at a temperature below 6°C (42°F) or above 36°C (97°F) when initiating the OCS system reset process. If the vehicle has been exposed to extreme cold or hot temperatures, the vehicle must be exposed and kept at a temperature within the limits, 6°C to 36°C (42°F to 97°F) for a minimum of 30 minutes.
    • Make sure nothing is present on the passenger seat before carrying out the OCS system reset and nothing is placed on the seat during the process.
    • Make sure a minimum 8-second time period has passed after cycling the ignition switch ON before the carrying out the OCS system reset process.

    Carry out the OCS system reset.
  1. If the first system reset attempt was unsuccessful, carry out a thorough visual inspection of the following and repair any concerns found.
    • OCS system connector and wiring for damage
    • Pressure sensor hose for kinks and/or damage
    • Seat-related wiring harness and body wiring harness terminals and connectors for damage
  1. NOTE:

    The ignition must be cycled after the OCS system reset.

    Carry out a second OCS system reset. If the second attempt is unsuccessful, install a new OCS system service kit. For additional information, refer to Occupant Classification System in Section  501-20B.

  1. Prove out the SRS as follows: Turn the ignition key from ON to OFF. Wait 10 seconds, then turn the key back to ON and monitor the air bag warning indicator with the air bag modules installed. The air bag warning indicator will light continuously for approximately 6 seconds and then turn off. If an air bag SRS fault is detected, the air bag warning indicator will:
    - fail to light.
    - remain lit continuously. - flash.
    The flashing might not occur until approximately 30 seconds after the ignition switch has been turned from the OFF to the ON position. This is the time required for the Restraints Control Module (RCM) to complete the testing of the SRS . If the air bag warning indicator is inoperative and a SRS fault exists, a chime will sound in a pattern of 5 sets of 5 beeps. If this occurs, the air bag warning indicator and any SRS fault discovered must be diagnosed and repaired. Clear all continuous DTCs from the RCM and OCSM using a scan tool.
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