AIRBAG SYSTEM SYSTEM DESCRIPTION


  1. GENERAL


    1. Acceleration sensors and pressure sensors used for the airbag system are installed to various parts on the vehicle and calculate the acceleration rate and pressure of each part during a collision.

    2. Depending on the situation, the airbag sensor assembly sends a deployment signal to SRS parts based on the information from each sensor.

  2. DEPLOYMENT CONDITION


    1. FRONTAL COLLISION

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      1. Frontal collision signals are produced based on the information from the airbag sensor assembly and front airbag sensors.

        Tech Tips

        In the case of a frontal collision, the SRS deployment signal may be output after receiving an ON signal from the acceleration sensor built into the airbag sensor assembly even without a signal from the front airbag sensors.

      2. Frontal collision signals are used to deploy the SRS parts.

        SRS Part Pretensioner Deployment Judgment Pretensioner and Airbag Deployment Judgment
        LHD RHD LHD RHD
        Horn Button Assembly Driver Side Squib X X ○ ○
        Driver Side Squib 2nd Step X X ○*3 ○*3
        Instrument Panel Passenger Airbag Assembly Front Passenger Side Squib X X ○*1*2 ○*1*2
        Front Passenger Side Squib 2nd Step X X ○*1*2 ○*1*2
        Lower No. 1 Instrument Panel Airbag Assembly X X ○ ○
        Front Seat Cushion Airbag Assembly LH - X - ○*2*4
        Front Seat Cushion Airbag Assembly RH X - ○*1*2*4 -
        Front Seat Airbag Assembly LH X X ○ ○
        Front Seat Airbag Assembly RH X X ○ ○
        Rear Seat Airbag Assembly LH X X ○ ○
        Rear Seat Airbag Assembly RH X X ○ ○
        Curtain Shield Airbag Assembly LH X X ○ ○
        Curtain Shield Airbag Assembly RH X X ○ ○
        Front Seat Outer Belt Assembly LH ○ ○ ○ ○
        Front Seat Outer Belt Assembly RH Front Pretensioner Squib RH ○*1 ○ ○*1 ○
        Selectable Force Limiter Squib RH (w/ Occupant Classification System) ○*1 - ○*1 -
        Rear No. 1 Seat Outer Belt Assembly LH ○ ○ ○ ○
        Rear No. 1 Seat Outer Belt Assembly RH ○ ○ ○ ○

        • ○: Deployable

        • X: Not Deployable

        • *1: Deployment depends on front passenger seat condition. (w/ Occupant Classification System)

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        • *2: Deployment depends on airbag cut off switch cylinder sub-assembly condition. (w/ Airbag Cut Off Switch)

        • *3: Deployment depends on of driver seat belt condition and seat position.

        • *4: Deployment depends on front passenger seat belt condition.

    2. SIDE COLLISION (Pattern 1)

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      1. Side collision (Pattern 1) signals are produced based on the information from the airbag sensor assembly, door side airbag sensor and side airbag sensor assembly*.


        • *: w/ Airbag Cut Off Switch

      2. Side collision (Pattern 1) signals are used to deploy the SRS parts.

        SRS Part Side Collision (Pattern 1) Detected
        LH Side Collision RH Side Collision
        Horn Button Assembly Driver Side Squib X X
        Driver Side Squib 2nd Step X X
        Instrument Panel Passenger Airbag Assembly Front Passenger Side Squib X X
        Front Passenger Side Squib 2nd Step X X
        Lower No. 1 Instrument Panel Airbag Assembly X X
        Front Seat Cushion Airbag Assembly LH (for RHD) X X
        Front Seat Cushion Airbag Assembly RH (for LHD) X X
        Front Seat Airbag Assembly LH ○ X
        Front Seat Airbag Assembly RH X ○
        Rear Seat Airbag Assembly LH ○ X
        Rear Seat Airbag Assembly RH X ○
        Curtain Shield Airbag Assembly LH ○ X
        Curtain Shield Airbag Assembly RH X ○
        Front Seat Outer Belt Assembly LH ○ X
        Front Seat Outer Belt Assembly RH Front Pretensioner Squib RH X ○
        Selectable Force Limiter Squib RH (w/ Occupant Classification System) X ○
        Rear No. 1 Seat Outer Belt Assembly LH ○ X
        Rear No. 1 Seat Outer Belt Assembly RH X ○

        • ○: Deployable

        • X: Not Deployable

    3. SIDE COLLISION (Pattern 2)

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      1. Side collision (Pattern 2) signals are produced based on the information from the airbag sensor assembly and rear airbag sensor.

      2. Side collision (Pattern 2) signals are used to deploy the SRS parts.

        SRS Part Side Collision (Pattern 2) Detected
        LH Side Collision RH Side Collision
        Horn Button Assembly Driver Side Squib X X
        Driver Side Squib 2nd Step X X
        Instrument Panel Passenger Airbag Assembly Front Passenger Side Squib X X
        Front Passenger Side Squib 2nd Step X X
        Lower No. 1 Instrument Panel Airbag Assembly X X
        Front Seat Cushion Airbag Assembly LH (for RHD) X X
        Front Seat Cushion Airbag Assembly RH (for LHD) X X
        Front Seat Airbag Assembly LH X X
        Front Seat Airbag Assembly RH X X
        Rear Seat Airbag Assembly LH ○ X
        Rear Seat Airbag Assembly RH X ○
        Curtain Shield Airbag Assembly LH ○ X
        Curtain Shield Airbag Assembly RH X ○
        Front Seat Outer Belt Assembly LH X X
        Front Seat Outer Belt Assembly RH Front Pretensioner Squib RH X X
        Selectable Force Limiter Squib RH (w/ Occupant Classification System) X X
        Rear No. 1 Seat Outer Belt Assembly LH ○ X
        Rear No. 1 Seat Outer Belt Assembly RH X ○

        • ○: Deployable

        • X: Not Deployable

    4. ROLLOVER (w/ Occupant Classification System)

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      *1 Airbag Sensor Assembly
      *2 to SRS Parts
      *3 Deployment Signals

      1. A circuit to detect vehicle rollover is built into the airbag sensor assembly.

      2. When the conditions for vehicle rollover are met, the airbag sensor assembly deploys the SRS parts.

        SRS Part Rollover Detected
        Horn Button Assembly Driver Side Squib X
        Driver Side Squib 2nd Step X
        Instrument Panel Passenger Airbag Assembly Front Passenger Side Squib X
        Front Passenger Side Squib 2nd Step X
        Lower No. 1 Instrument Panel Airbag Assembly X
        Front Seat Cushion Airbag Assembly LH (for RHD) X
        Front Seat Cushion Airbag Assembly RH (for LHD) X
        Front Seat Airbag Assembly LH X
        Front Seat Airbag Assembly RH X
        Rear Seat Airbag Assembly LH X
        Rear Seat Airbag Assembly RH X
        Curtain Shield Airbag Assembly LH ○
        Curtain Shield Airbag Assembly RH ○
        Front Seat Outer Belt Assembly LH ○
        Front Seat Outer Belt Assembly RH Front Pretensioner Squib RH ○
        Selectable Force Limiter Squib RH (w/ Occupant Classification System) ○
        Rear No. 1 Seat Outer Belt Assembly LH ○
        Rear No. 1 Seat Outer Belt Assembly RH ○

        • ○: Deployable

        • X: Not Deployable