Passive Restraints
The passive restraints available for this vehicle include the following:
- Dual Front Airbags - Multistage driver and front passenger airbags 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 airbags.
- Side Curtain Airbags - Side curtain airbags are standard equipment for this vehicle when it is also equipped with dual front airbags. 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 (3) - 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 (1) - 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 (5) - 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 (2) - 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 Belt Tensioner (6) - 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 (8) - 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 airbags, up to three on each side of the vehicle. One pressure-type sensor (4) 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 (7) 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. Refer to 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.