Restraints - Description
DESCRIPTION
An occupant restraint system is standard factory-installed safety equipment on this vehicle. Available occupant restraints for this vehicle include both active and passive types. Active restraints are those which require the vehicle occupants to take some action to employ, such as fastening and adjusting a seat belt; while passive restraints require no action by the vehicle occupants to be employed.
ACTIVE RESTRAINTS
The active restraints for this vehicle include:
- Child Restraint Anchors - All standard cab vehicles are equipped with two, fixed-position, child seat upper tether anchors that are integral to the upper cab back panel reinforcement and concealed behind individual trim cover and bezel units that are integral to the cab back trim panel. All vehicles with rear seats are equipped with three child seat upper tether anchor straps that are secured to the upper cab back panel reinforcement, behind the upright rear seat back. Two lower anchors are also provided for each rear outboard seating position on quad or crew cabs. Mega cabs have lower anchors provided for all three rear seating positions. These lower anchors are accessed from the front of the seat where the seat back meets the seat cushion. Child seat upper tether and lower anchors for the front seat are unavailable on quad or crew cab and mega cab vehicles. Likewise, lower anchors for the front seat are not available on standard cab vehicles.
- Front Seat Belts - Both outboard front seating positions are equipped with three-point seat belt systems employing a lower B-pillar mounted inertia latch-type Emergency Locking Retractor (ELR), a height-adjustable upper B-pillar mounted turning loop, a fixed lower seat belt anchor secured to the lower B-pillar (standard cab) or floor panel adjacent to the B-pillar (quad or crew cab), and a traveling end-release seat belt buckle secured to the inboard seat track. Except for the driver side front seat, the retractors for all vehicles are also switchable from an ELR to an Automatic Locking Retractor (ALR) for compatibility with child seats. The front seat belt buckle for the driver side of all vehicles includes an integral seat belt switch that detects whether its seat belt has been fastened. The center front seating position for standard cabs is also equipped with a three-point seat belt employing a floor panel mounted inertia latch-type ELR, a routing bracket and bezel near the top of the cab back panel, and two fixed end-release buckles secured to the center seat cushion frame. One of the center buckles is specially keyed to serve as the center seat belt lower anchor. The center front seating position for quad or crew cab vehicles with a split bench front seat is equipped with a fixed lap belt and an end-release buckle secured to the center seat cushion frame.
- Rear Seat Belts - On all vehicles equipped with rear seats, each rear seating position is equipped with a three-point seat belt system. Each outboard rear seating position seat belt employs a lower C-pillar mounted inertia latch-type Emergency Locking Retractor (ELR), a fixed position upper C-pillar mounted turning loop, and a fixed lower seat belt anchor secured to the lower C-pillar. The quad or crew cab rear seat center seating position has a rear floor panel mounted inertia latch-type ELR and a routing bracket and bezel on the top of the cab back panel, while the mega cab rear seat center position retractor and a routing bracket and bezel are mounted to the rear seat back panel. A fixed end-release buckle unit for the quad or crew cab right outboard seating position is integral to the right side of the center retractor mounting bracket on the rear floor panel. The end-release buckle units for the quad or crew cab center and left outboard seating positions are individually secured to the rear floor panel on vehicles with the standard equipment rear bench seat, or secured with the rear seat mounting hardware on vehicles with the optional split rear bench seat. The fixed end-release buckle units for all mega cab rear seating positions are secured to the seat cushion frame mounting hardware. The rear seat retractors for all vehicles are also switchable from an ELR to an Automatic Locking Retractor (ALR) for compatibility with child seats.
PASSIVE RESTRAINTS
The passive restraints available for this vehicle include the following:
- Dual Front Air bags - Multistage driver and front passenger air bags are used in this vehicle. This airbag system consists of passive, inflatable, Supplemental Restraint System (SRS) components and vehicles with this equipment can be readily identified by the SRS - AIRBAG logo molded into the driver airbag trim cover in the center of the steering wheel and also into the passenger airbag door on the top of the instrument panel trim cover above the upper glove box or storage bin opening. Vehicles with the airbag system can also be identified by the airbag indicator, which will illuminate in the ElectroMechanical Instrument Cluster (EMIC) (also known as the Cab Compartment Node/CCN) from four to six seconds as a bulb test each time the ignition switch is turned to the ON position. A pyrotechnic-type seat belt tensioner is also integral to the front outboard seat belt retractors to work in conjunction with the dual front air bags.
- Seat Air bags - Front seat-mounted seat (pelvic and thorax) air bags are optional equipment in this vehicle. This airbag system consists of passive, inflatable, SRS components and vehicles with this equipment can be readily identified by a sewn tag with the SRS - AIRBAG logo located on the outboard side of the front seat back trim cover.
- Side Curtain Air bags - Side curtain air bags are standard equipment for this vehicle when it is also equipped with dual front air bags. This airbag system consists of passive, inflatable, SRS components and vehicles with this equipment can be readily identified by a molded identification trim button with the SRS - AIRBAG logo located at the top of each B-pillar trim (all models) and C-pillar trim (quad or crew cab and mega cab only) near the headliner.
The SRS includes the following major components, which are described in further detail elsewhere in this service information:
- Airbag Indicator - The airbag indicator is integral to the ElectroMechanical Instrument Cluster (EMIC) (also known as the Cab Compartment Node/CCN), which is located on the instrument panel in front of the driver.
- Clockspring - The clockspring is located near the top of the steering column, directly beneath the steering wheel.
- Driver Airbag - The driver airbag is located in the center of the steering wheel horn pad, beneath the driver airbag trim cover.
- Driver Knee Blocker - The driver knee blocker is a structural unit secured to the back side of and integral to the instrument panel steering column opening cover.
- Front Impact Sensor - Two front impact sensors are used, one left side and one right side. One sensor is located on the back side of each end of the lower radiator support cross member on each side of the cooling module and below the inboard side of each front lamp unit.
- Occupant Restraint Controller - The Occupant Restraint Controller (ORC) is located on a mounting bracket on the floor panel transmission tunnel below the center section of the front seat, or under the center floor console, as the vehicle is equipped.
- Passenger Airbag - The passenger airbag is located in the instrument panel, beneath the passenger airbag door integral to the top of the instrument panel trim cover just forward of the upper glove box or storage bin on the passenger side of the vehicle.
- Passenger Knee Blocker - The passenger knee blocker is a structural reinforcement that is integral to and concealed within the lower glove box door.
- Seat Airbag - On vehicles so equipped, a seat (pelvic and thorax) airbag unit is secured to each outboard front seat back frame, where it is concealed beneath the seat back trim cover and foam.
- Seat Belt Tensioner - A seat belt tensioner is integral to both front outboard seat belt retractor units. The seat belt retractor tensioner units are secured to the right and left inner B-pillars and concealed beneath the lower B-pillar trim.
- Side Curtain Airbag - A side curtain airbag is secured to each inside roof side rail above the headliner, and extends from the A-pillar to near the cab back.
- Side Impact Sensor - Up to six side impact sensors are used on vehicles with side curtain air bags, up to three on each side of the vehicle. One pressure-type sensor is located on each right and left front door module carrier behind the front door trim panel on some vehicles. In addition, an acceleration-type sensor is located on each inner B-pillar behind the lower B-pillar trim on all models, while quad or crew cab and mega cab models also have one acceleration-type sensor on each inner C-pillar behind the lower C-pillar trim.
The ORC and the EMIC each contain a microprocessor and programming that allow them to communicate with each other using the Controller Area Network (CAN) data bus. This method of communication is used by the ORC for control of the airbag indicator in the EMIC. Communication - Description.
Hard wired circuitry connects the SRS components to each other through the electrical system of the vehicle. These hard wired circuits are integral to several wire harnesses, which are routed throughout the vehicle and retained by many different methods. These circuits may be connected to each other, to the vehicle electrical system, and to the SRS components through the use of a combination of soldered splices, splice block connectors, and many different types of wire harness terminal connectors and insulators. Refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, further details on wire harness routing and retention, as well as pin-out and location views for the various wire harness connectors, splices and grounds.