Occupant Classification Sensor (OCS)

WARNING: This page is about a different car, the 2005 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: It is necessary to rezero the occupant classification sensor (OCS) system when a front passenger seat cushion is disassembled, a new trim cover installed 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.

CAUTION: Make sure the seat is completely assembled before rezeroing.

CAUTION: The following precautions must be taken before rezeroing the OCS system:

Make sure the OCS system components are connected and no faults are present.
Make sure the OCS system is not at a temperature below 0°C (32°F) or above 45°C (113°F) when initiating the rezeroing 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, 0°C to 45°C (32°F to 113°F) for a minimum of 30 minutes.
Make sure nothing is present on the passenger seat before rezeroing and nothing is placed on the seat during the rezeroing process.
Make sure a minimum 8-second time period has passed after cycling the ignition switch ON before the rezeroing process.

NOTE: For best results in rezeroing, the OCS system should be at or near room temperature, 10°C to 29°C (50°F to 85°F).

NOTE: If the first attempt to rezero the OCS system is unsuccessful, a second attempt must be made.

The seat OCS system is found only on the front passenger seat. The OCS system components (seat wiring harness, seat cushion frame, seat cushion foam pad, bladder with pressure sensor and electronic control unit [ECU]) are calibrated to each other and are serviced as an assembly. 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 frame, seat cushion foam pad, bladder with pressure sensor, seat wiring harness and ECU) must be installed as an assembly. For additional information, REFER to SUPPLEMENTAL RESTRAINT SYSTEM .