Restraints (Except Troubleshooting): Overview Kia Sorento I рестайлинг

DESCRIPTION

The supplemental restraint system (SRS) is designed to supplement the seat belt to help reduce the risk or severity of injury to the driver and passenger by activating and deploying the driver, passenger, curtain airbag and belt pretensioner in certain frontal or side collisions.

The SRS (Airbag) consists of a driver side airbag module located in the center of the steering wheel, which contains the folded cushion and an inflator unit; a passenger side airbag module located in the passenger side crash pad contains the folded cushion assembled with inflator unit; curtain airbag modules located inside of the headliner which contains folded cushions and inflator units. The impact sensing function of the SRSCM is carried out by electronic accelerometer that continuously measure the vehicle's acceleration and delivers a corresponding signal through amplifying and filtering circuitry to the microprocessor.

The primary purpose of the SRSCM (Supplemental Restraints System Control Module) is to discriminate between an event that warrants restraint system deployment and an event that does not. The SRSCM must decide whether to deploy the restraint system or not. After determining that pretensioners and/or airbag deployment is required, the SRSCM must supply sufficient power to the pretensioners and airbag igniters to initiate deployment.

The SRSCM determines that an impact may require deployment of the pretensioners and airbags from data obtained from impact sensors and other components in conjunction with a safing function. The SRSCM will not be ready to detect a crash or to activate the restraint system devices until the signals in the SRSCM circuitry stabilize. It is possible that the SRSCM could activate the safety restraint devices in approximately 2 seconds but is guaranteed to fully function after prove-out is completed.

The SRSCM must perform a diagnostic routine and light a system readiness indicator at key-on. The system must perform a continuous diagnostic routine and provide fault annunciation through a warning lamp indicator in the event of fault detection. A serial diagnostic communication interface will be used to facilitate servicing of the restraint control system.

Scheme 1

1. Remove the ignition key from the vehicle.
2. Disconnect the battery negative cable and wait for at least three minutes before beginning work.
3. Disconnect the DAB, PAB, KAB, CAB and BPT connectors.
4. Remove the console lid cover. Refer to «BODY (INTERIOR AND EXTERIOR)»(ref-278816) .
5. Disconnect the SRSCM harness connector after pulling the connector locking lever.
6. Remove the SRSCM mounting bolt (1EA) and nuts (2EA) from the SRSCM, then remove the SRSCM.

Driver Airbag (DAB) is installed in steering wheel and electrically connected to SRSCM via clockspring. It protects the driver from danger by deploying a bag when frontal crash occurs. The SRSCM determines deployment of Driver Airbag (DAB).

Scheme 2

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Scheme 8

1. Disconnect the battery negative cable and wait for at least three minutes before beginning work.
2. Remove the airbag module mounting bolts (2EA).
3. Disconnect the horn connector (A).
4. Release the connector locking pin, then disconnect the driver airbag module connector (B). CAUTION: The removed airbag module should be stored in a clean, dry place with the pad cover face up.
5. Remove the steering wheel with SST (SST No. 09561-11001) after unfastening the mounting nut.
6. Remove the steering wheel column cover after unscrewing 3 screws.
7. Unscrew the clock spring tightening screws (4EA).
8. Disconnect the clock spring wiring harness and the horn wiring harness connector from the clock spring.

The passenger Airbag (PAB) is installed inside the crash pad and protects the front passenger in the event of a frontal crash. The SRSCM determines if and when to deploy the PAB.

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Scheme 11

1. Disconnect the battery negative cable and wait for at least three minutes before beginning work.
2. Remove the glove box. Refer to «BODY (INTERIOR AND EXTERIOR)»(ref-278816) .
3. Remove the PAB mounting bolts (2EA).
4. Disconnect the PAB module connector.
5. Remove the crash pad. Refer to «BODY (INTERIOR AND EXTERIOR)»(ref-278816) . NOTE: If the crash pad is damaged when the PAB is deployed, replace the damaged crash pad and PAB together.
6. Remove the heater duct from the crash pad.
7. Remove the mounting nuts (6EA) from the crash pad. Then remove the passenger airbag. CAUTION: The removed airbag module should be stored in a clean and dry place with the pad cover face up.

Scheme 12

1. Remove the ignition key from the vehicle.
2. Disconnect the battery negative cable from battery and wait for at least three minutes before beginning work.
3. Place a Passenger Airbag (PAB) on the crash pad and tighten the Passenger Airbag (PAB) mounting nuts. Tightening torque: 0.9-1.4 kgf.m (8.8-13.7 N.m, 6.5-10.1 lb. ft)
4. Install the heater duct to the crash pad.
5. Install the crash pad. Refer to «BODY (INTERIOR AND EXTERIOR)»(ref-278816) .
6. Tighten the PAB mounting bolt. Tightening torque: 1.9-2.7 kgf.m (18.6-26.5 N.m, 13.7-19.5 lb.ft)
7. Connect the Passenger Airbag (PAB) harness connector to the SRS main harness connector.
8. Reinstall the glove box. Refer to «BODY (INTERIOR AND EXTERIOR)»(ref-278816) .
9. Reconnect the battery negative cable.
10. After installing the Passenger Airbag (PAB), confirm proper system operation: Turn the ignition switch ON; the SRS indicator light should be turned on for about six seconds and then go off.

Curtain airbags are installed inside the headliner (LH and RH) and protect the driver and passenger from danger when side crash occurs. The SRSCM determines deployment of curtain airbag by using side impact sensor (SIS) signal.

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Scheme 14

1. Disconnect the battery negative cable and wait for at least three minutes before beginning work.
2. Remove the following parts. Refer to «BODY (INTERIOR AND EXTERIOR)»(ref-278816) . Side trim, Roof trim
3. Disconnect the Curtain Airbag harness connector.
4. After loosening the mounting bolts (6EA) and nut (1EA) remove the curtain airbag.

The Knee Airbag (KAB) is installed inside the crash pad lower panel and protects the driver in the event of a frontal crash. The SRSCM determines if and when to deploy the KAB.

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Scheme 16

1. Disconnect the battery negative cable and wait for at least 3 minutes before beginning work.
2. Remove the following parts. Refer to «BODY (INTERIOR AND EXTERIOR)»(ref-278816) . Crash pad lower panel
3. Disconnect the Knee Airbag harness connector.
4. After loosening the mounting nuts (4EA) remove the knee airbag.

The Seat Belt Pretensioners (BPT) are installed inside Center Pillar (LH & RH). When a vehicle crashes with a certain degree of frontal impact, the pretensioner seat belt helps to reduce the severity of injury to the front seat occupants by retracting the seat belt webbing. This prevents the front occupants from thrusting forward and hitting the steering wheel or the instrument panel when the vehicle crashes.

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1. Disconnect the battery negative cable, and wait for at least three minutes before beginning work.
2. Remove the lower anchor bolt.
3. Remove the following parts. Refer to «BODY (INTERIOR AND EXTERIOR)»(ref-278816) . Door scuff trim, Center pillar trim
4. Remove the upper anchor bolt.
5. Disconnect the Seat Belt Pretensioner connector.
6. Loosen the Seat Belt Pretensioner mounting screw and remove the Seat Belt Pretensioner.

The front impact sensor (FIS) is installed in the side member. They are remote sensors that detect acceleration due to a collision at its mounting location. The primary purpose of the Front Impact Sensor (FIS) is to provide an indication of a collision. The Front Impact Sensor (FIS) sends acceleration data to the SRSCM.

The Side Impact Sensor (SIS) system consists of two front SIS which are installed in the center pillar (LH and RH) They are remote sensors that detect acceleration due to collision at their mounting locations. The primary purpose of the Side Impact Sensor (SIS) is to provide an indication of a collision. The Side Impact Sensor (SIS) sends acceleration data to the SRSCM.

The buckle status shall modify the SRSCM deployment. If the Buckle Status is Unbuckled, the corresponding pretensioner will be deactivated.

Scheme 20

In contrast to the initial one-stage airbag systems, newer restraint systems involve complex logic to select, or alternatively suppress, various levels of safety system deployment. Inherent to an Advanced Restraint System is the ability to discern information regarding passenger occupancy. It is intended that these inputs be provided through the OC system. The objective of such safety system is to reduce the risk and level of injuries by automatically adapting the airbag(s) and seat belt pretensioner to the driving status of the vehicle, its occupants, and the crash severity. The current OC system covered in this specification continually senses and classifies the front passenger side seat.

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