Seats: Description and Operation

SEATS

Front Seats
The front bucket and 40/20/40 seats are available with the following:
- Manual seats
- Power seats
- Manual lumbar
- Side air bag
- Safety belt buckle pretensioner

The power seat has the following features:
- Horizontal, vertical, and front and rear tilt adjustments

Side Air Bag
Driver and passenger side air bags are attached to the seat backrest frame. For diagnostic information, or if the side air bag has been deployed, refer to Air Bag Systems.

Front seat backrest trim covers installed on seats with side air bags cannot be repaired. Install new front seat backrest trim covers. Cleaning is permissible.

If a side air bag deployment took place, a new seat back pad, trim cover and side air bag module must be installed. Install a new seat backrest frame, if necessary.

Safety Belt Buckle and Pretensioner Assembly - Front
The driver and front outboard passenger safety belt buckle pretensioner assemblies are secured to the front seat track assembly. This allows the front safety belt buckle end to move with the front seat.

The safety belt buckle pretensioner is a pyrotechnic device that removes excess webbing from the safety belt system. The safety belt buckle pretensioner assembly uses the same crash sensor system as the air bag supplemental restraint system (SRS). When the safety belt buckle pretensioner assembly deploys, the buckle moves downward, pulling excess webbing from the lap and shoulder safety belts.

If the safety belt buckle pretensioner assembly is deployed, a new assembly must be installed.

Occupant Classification Sensor

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 diagnostic tool is used to trigger the active command to carry out rezeroing of the OCS system.
- Make sure the seat is completely assembled before rezeroing.
- 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 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).
- If the first attempt to rezero the OCS system is unsuccessful, a attempt must be made.

The seat occupant classification sensor system is found only on the front passenger seat. The OCS system components (seat cushion foam pad, bladder, bladder with pressure sensor and electronic control unit) are calibrated to each other and are serviced as an assembly. OCS system components are not to be installed separately. If installing a new OCS system, OCS system component or seat cushion foam pad, a new OCS system service kit (seat cushion foam pad, bladder, bladder with pressure sensor and electronic control unit) must be installed as an assembly.

Rear Seats

Fold Down Seat

WARNING: If the rear seat backrest is not securely latched, passengers or objects could be thrown and injury could occur in the event of a sudden stop or collision.

The fold down rear seat backrests are a split (60/40) design and operate independently of each other.