Kia Optima DL3 Quiz

Restraints

In this manual: Restraints
General Information — 8Advanced Driver Assistance System (ADAS) — 21Maintenance — 27Engine Mechanical System — 45Engine Electrical System — 11Emission Control System — 11Engine Control System/Fuel System — 25Automatic Transmission — 20Drive Shaft and Axle — 7Suspension System — 22Steering — 7Restraints — 11Brake System — 22Body (Interior and Exterior) — 116Body Electrical System — 90Heating, Ventilation, and Air Conditioning — 32
24steps
~144min
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General Information

General

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 front passenger by activating and deploying the driver, passenger, side airbags and seat belt pretensioners in certain frontal or side collisions.

The SRS (airbag) consists of: the driver airbag module with folded airbag and inflator unit located in the center of the steering wheel, the passenger airbag module with folded airbag and inflator unit located in the passenger-side instrument panel cover, the side airbag modules with folded airbags and inflator units located in the front seats, and the curtain airbag modules with folded airbags and inflators located inside the roof trim. The impact detection function of the SRSCM is performed by an electronic accelerometer that continuously measures vehicle acceleration and sends a corresponding signal through the amplification and filtering circuits of the microprocessor.

SRSCM (SRS Control Module)

The SRSCM detects a frontal collision with the frontal impact sensor and a side collision with the side impact sensor to determine airbag module deployment.

  1. DC/DC Converter: The DC/DC converter in the power supply includes a transformer step-up/step-down converter and supplies ignition voltage to the front airbag 2 ignition circuits and internal operating voltage to the SRSCM. If the internal operating voltage falls below the critical value, it will reset.

  2. Backup Power Supply: The SRSCM has a separate backup power supply that provides instant deployment energy in low voltage conditions or when power supply is interrupted due to a frontal collision.

  3. Self-Diagnosis: The SRSCM continuously monitors the current operating status of the SRS and detects system malfunctions when the vehicle power is on. System errors can be checked using diagnostic trouble codes with the KDS.

  4. Airbag Warning Lamp Illumination: When a malfunction is detected, the module sends a signal to the SRSCM warning lamp located in the instrument panel. The MIL will indicate an SRS driver error. When the ignition is turned on, the SRS lamp will illuminate for approximately six seconds.

  5. Diagnostic Trouble Code Recording: When a malfunction occurs in the SRSCM system, the DTC corresponding to the malfunction is stored. DTCs can only be cleared using the KDS. However, if an internal malfunction code is recorded or a collision is recorded, the malfunction code(s) cannot be cleared.

  6. Self-Diagnosis Connector: Data stored in the SRSCM memory is sent to the KDS or other external output devices through the connector located below the driver-side airbag.

  7. After airbag deployment, the SRSCM must be replaced. It must never be reused.

  8. Side airbag deployment is determined by the SRSCM detecting the satellite side impact sensor signal.

  9. After the repair procedure, check that the SRSCM operates normally.

Tightening Torque

Tightening torque

Item N·m kgf·m lbf·ft lbf·in
Passenger Airbag (PAB) Bolt 3,9 - 5,8 0,4 - 0,6 2,8 - 4,3 34,7 - 52,0
Side Airbag (SAB) Nut 5,8 - 7,8 0,6 - 0,8 4,3 - 5,7 52,0 - 69,4
Curtain airbag (CAB) bolt 7,8 - 11,7 0,8 - 1,2 5,7 - 8,6 -
Curtain airbag (CAB) nut 3,9 - 5,8 0,4 - 0,6 2,8 - 4,3 34,7 - 52,0
SRS control module (SRSCM) bolt 10,8 - 13,7 1,1 - 1,4 8,0 - 10,1 -
SRS control module (SRSCM) nut 6,9 - 7,8 0,7 - 0,8 5,1 - 5,7 60,8 - 69,4
Frontal Impact Sensor (FIS) Bolt 8,8 - 10,8 0,9 - 1,0 6,5 - 7,2
Gravity Side Impact Sensor (P-SIS) 2,0 - 2,9 0,2 - 0,3 1,4 - 2,2 17,4 - 26,0
Gravity Side Impact Sensor (G-SIS) 6,9 - 7,8 0,7 - 0,8 5,1 - 5,7 60,8 - 69,4
Seatbelt Retractor and Pretensioner 39,2 - 53,9 4,0 - 5,5 28,9 - 39,8 -

Special Service Tools

Special Service Tools

Tool Name/Number Illustration Description
Deployment Tool
0957A-34100A
Used to deploy the airbag
Deployment Adapter
0K57A-3U100A
Used with the deployment tool (0957A-34100A) when deploying DAB, PAB, CAB, BPT
Deployment Adapter
0957A-2W100
Used with the deployment tool (0957A-34100A) when deploying SAB
Dummy Unit
0957A-38200
Airbag Wiring Harness Resistance Check Simulator
Dummy Adapter
0957A-2W200
Used with the dummy (0957A-38200)
when checking SAB resistance
Dummy Adapter
0957A-2G000
Used with the dummy (0957A-38200)
when checking DAB, PAB, CAB, BPT resistance

DAB: Driver Airbag

PAB: Passenger Airbag

SAB: Side Airbag

CAB: Curtain Airbag

BPT: Seat Belt Pretensioner

General Safety Information and Precautions

Precautions

General Precautions

Carefully read the following precautions before servicing the airbag system.

Follow the instructions in this manual, otherwise the airbags may deploy unintentionally and cause damage or injury.

  • Except when inspecting the electrical system, always turn the ignition OFF and disconnect the negative battery cable, then wait at least three minutes before starting work.

  • Use replacement parts manufactured to the same standards as genuine parts and of good quality.

    Do not install used SRS parts from another vehicle. Use only new parts when repairing the SRS.

  • Carefully inspect any SRS component before installation. Do not install any part that shows signs of being dropped or mishandled, such as dents, cracks or deformation.

  • Before removing any SRSCM component (including disconnecting connectors), always disconnect the SRSCM connector.

Airbag Control and Storage

Do not disassemble the airbags; they have no serviceable parts. Once an airbag has deployed, it cannot be repaired or reused.

For temporary storage of the airbag during service, observe the following precautions.

  • Store the removed airbag with the pad facing up.

  • Do not allow oil, grease, cleaning agents, or water to contact the airbag module to prevent damage.

  • Store the removed airbag on a solid, flat surface away from heat sources (above 85 C/185 F).

  • Never perform electrical tests on airbags, such as measuring resistance.

  • Do not stand in front of the airbag module during removal, inspection, or replacement.

  • Refer to the disposal procedures for a deployed or damaged airbag.

  • Be careful not to strike the SRS unit or side impact sensors or frontal impact sensors. Whenever the ignition switch is in the ON position, wait at least three minutes after turning the ignition off before starting work.

  • During installation or replacement, be careful not to strike the area around the SRS unit and the side impact sensors and front impact sensors with a wrench, hammer, etc. The airbags may deploy unintentionally and cause damage or injury.

  • Replace the front airbag module, SRSCM, FIS if the front airbag has deployed. Replace the airbag wiring if damaged. Replace the side airbag module, curtain airbag module, SRSCM, SIS if the side airbag has deployed. Replace the airbag wiring if the airbag wiring is damaged.

  • After a collision in which the airbags or side airbags did not deploy, inspect the SRS unit and side impact sensors for damage or deformation. If damaged, replace the SRS unit, front impact sensor, and/or side impact sensors.

  • Do not disassemble the SRS unit, front impact sensor, or side impact sensors.

  • Turn the ignition off, disconnect the negative battery cable and wait at least three minutes before starting installation or replacement of the SRS unit.

  • Make sure the SRS unit, front impact sensor, and side impact sensors are securely fastened with the mounting bolts.

  • Do not spill water or oil on the SRS unit, front impact sensor, or side impact sensors, and protect them from dust.

  • Store the SRS unit, frontal impact sensor and side impact sensors in a cool (15 ~ 25 C/59 ~ 77 F) and dry (relative humidity 30 ~ 80 %, non-condensing) area.

Connection Precautions

SRS wiring can be identified by its special yellow outer covering. Follow the instructions described in this section.

  • Never attempt to modify, splice, or repair SRS wiring. If there is an open circuit or damage to the SRS wiring, replace the harness.

  • Make sure the harness wires are routed so that they are not pinched or interfere with other parts.

  • Make sure all SRS ground points are clean and the grounds are securely fastened for optimal metal-to-metal contact. Poor grounding can cause intermittent problems that are difficult to diagnose.

Electrical Precautions and Inspection

  • When using electrical test equipment, insert the tester probe from the wire side of the connector.

    Do not insert the tester probe into the terminal side of the connector, and do not touch the connector terminals.

  • Use a U-shaped probe. Do not force the probe into the connector.

  • Use the specified service connectors for troubleshooting.

    Using improper tools may cause an inspection error due to poor metal-to-metal contact.

Spring-Loaded Lock Connector

Some SRS connectors have a spring lock.

Airbag Connector

Disconnection

To unlock the lock, pull the spring-loaded bushing (A) and slider (B) while holding the opposite half of the connector.

Separate the connector halves. Be sure to pull on the sleeve, not on the connector half.

Connection

While holding both halves of the connector, press until the projection (C) on the coupling side clicks into place to lock the connector.

Airbag Module Disposal Procedure

Airbag Module Disposal Procedure

  • When scrapping a vehicle equipped with airbags and other restraint devices such as seat belt pretensioners, the airbags must be deployed beforehand.

  • Airbag deployment must be performed by an experienced technician.

  • Deployed airbags cannot be reused and must not be installed in any other vehicle.

Tools and equipment required to deploy the airbag module

Illustration Tool Name Notes
Gloves
Safety glasses
Ear plugs
2 tires with wheel rim (Top/Bottom)
3 tires without wheel rim (Middle)
Rope strap / ratchet strap (Use to connect the airbag module equipment and tires in accordance with the deployment instructions)
12 V battery

Deployed in the vehicle

  1. Turn the ignition off and disconnect the negative battery terminal.

  2. Make sure each airbag module is securely fastened.

  3. To prepare for airbag system deployment, see the following:

    1. Inside the vehicle, disconnect the airbag connector to be deployed.

    2. Connect the deployment adapter to the airbag/pretensioner.

      • For the driver airbag module, remove the connector and connect the deployment adapter. Reconnect the module to the steering wheel.

  4. The technician must stand at least 7 meters away from the vehicle.

  5. Connect the external battery after connecting the deployment tool (0957A-34100A) from the deployment adapter.

    1. Battery (12 V)

    2. Deployment Tool (0957A-34100A)

    3. Deployment Adapter

      • Driver's Airbag (0K57A-3U100A)

      • Passenger's Airbag (0K57A-3U100A)

      • Curtain Airbag (0K57A-3U100A)

      • Knee Airbag (0957A-3F100)

      • Side Airbag (0957A-2W100)

      • Seat Belt Pretensioner (0K57A-3U100A)

      • Anchor Pretensioner (0K57A-3U100A)

  6. Activate the airbag deployment tool switch to deploy the airbag system.

    1. When properly connected to the battery (12 V), the POWER ON button (1) will illuminate.

    2. Press and hold READY (2) until the READY indicator (2) illuminates. Then press DEPLOY (3) to deploy the system.

  7. Place the deployed airbags in a strong plastic bag, seal it securely, and discard the bag.

Vehicle Placement Outdoors

  1. Place the rope (A) on the floor to form a cross, and place the wheel tire (B) on top of it.

  2. Install the deployment adapter (0K57A-3U100A) to the airbag module/pretensioner.

  3. Secure the airbag module/pretensioner (A) to the wheel.

    [Airbag Module]

    [Pretensioner]

  4. First place three used tires (A), then place the wheel tire (B) on top of the stack.

  5. Secure the tire with a ratchet strap (C).

  6. Connect to the battery. Connect the airbag deployment tool (0957A-34100A) to the deployment adapter (0K57A-3U100A).

  7. When the POWER ON indicator (A) on the airbag deployment tool illuminates, press READY (B), then DEPLOY (C), to deploy the airbag.

  8. Place the deployed airbags in a strong plastic bag, seal it securely, and discard the bag.

Test yourself

A quick Kia Optima DL3 quiz: every answer comes with an explanation and a link to the manual page.