Kia Forte: Restraint

Kia Forte 2019-2020 (BD) Service Manual / Restraint

General safety information and caution
Precautions
General Precautions

Please read the following precautions carefully before performing the airbag system service.

Observe the instructions described in this manual, or the airbags could accidentally deploy and cause damage or injuries.

Except when performing electrical inspections, always turn the ignition switch OFF and disconnect the negative cable from the battery, and wait for at least three minutes before beginning to work.

  

The contents in the memory are not erased even if the ignition switch is turned OFF or the battery cables are disconnected from the battery.

Use the replacement parts which are manufactured to the same standards as the original parts and quality.

Do not install used SRS parts from another vehicle. Use only new parts when making SRS repairs.

Carefully inspect any SRS part before installing it. Do not install any part that shows signs of being dropped or improperly handled, such as dents, cracks or deformation.

Before removing any of the SRSCM parts (including the disconnection of the connectors), always disconnect the SRSCM connector.

Airbag Handling and Storage

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

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

Store the removed airbag with the pad facing up.

Keep the airbag assembly free from any oil, grease, detergent or water to prevent damage.

Store the removed airbag on secure, flat surface away from any high heat source (exceeding 85 °C/185 °F).

Never perform electrical inspections to the airbags, such as measuring resistance.

Keep away from the airbag assembly during removal, inspection, or replacement.

Refer to the scrapping procedures for disposal of the damaged airbag.

Be careful not to bump or impact the SRS unit or the side impact sensors or front impact sensors whenever the ignition switch is ON. Turn off the ignition and wait for at least three minutes before beginning to work.

During installation or replacement, be careful not to bump (by impact wrench, hammer, etc.) the area around the SRS unit and the side impact sensor and the front impact sensors. The airbags could accidentally deploy and cause damage or injury.

Replace the front airbag module, SRSCM, and FIS when the front airbag is deployed. Replace the airbag wiring when the airbag wiring gets damaged. Replace the side airbag module, the curtain airbag module, SRSCM, and SIS when the side airbag is deployed. Replace the airbag when the airbag wiring gets damaged.

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

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

Switch OFF the ignition, disconnect the negative battery cable and wait for at least three minutes before beginning installation or replacement of the SRS unit.

Be sure that the SRS unit, the front impact sensor and side impact sensors are installed securely with the mounting bolts.

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

Store the SRS unit, the front impact sensor and the side impact sensors in a cool (15 - 25 °C/ 59 - 77 °F) and dry (30 - 80 % relative humidity, no moisture) area.

Wiring Precautions

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

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

Be sure to install the harness wires so that they are not pinched, or interfering with other parts.

Make sure all SRS ground locations are clean, and grounds are securely fastened for optimum metal-to-metal contact. Poor grounding can cause intermittent problems that are difficult to diagnose.

Precautions for Electrical Inspections

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

Do not insert the probe of the tester into the terminal side of the connector, and do not tamper with the connector.

Use a u-shaped probe. Do not insert the probe forcibly.

Use specified service connectors for troubleshooting.

Using improper tools could cause an error in inspection due to poor metal contact.

Spring-Loaded Lock Connector

Some SRS system connectors have a spring-loaded lock.

Airbag Connector

Disconnecting

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

Pull the connector halves apart. Be sure to pull on the sleeve and not on the connector half.

Connecting

Hold both connector halves and press firmly until the projection (C) of the sleeve-side connector clicks to lock.

Abbreviation

Abbreviation
Explanation
DAB
Driver Airbag
PAB
Passenger Airbag
SAB
Side Airbag
CAB
Curtain Airbag
SRSCM
Supplemental Restraint System Control Module
FIS
Front Impact Sensor
P-SIS
Pressure Side Impact Sensor
G-SIS
Gravity Side Impact Sensor

Service data
Specification

Item
Resistance (Ω)
Driver Airbag (DAB)
1.7 - 2.3
Passenger Airbag (PAB)
1.7 - 2.3
Side Airbag (SAB)
1.8 - 2.4
Curtain Airbag (CAB)
1.7 - 2.3
Seat Belt Pretensioner (BPT)
1.7 - 2.3
Seat Belt Buckle Switch (BS)
1.7 - 2.3
Emergency Fastening Device (EFD)
1.7 - 2.3

Tightening torque
Tightening Torques

Item
N·m
kgf·m
lb·ft
lb·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
-
SRS control module (SRSCM) nut
6.96 - 7.25
0.71 - 0.74
5.13 - 5.35
-
Front impact sensor (FIS) bolt
8.8 - 9.8
0.9 - 1.0
6.5 - 7.2
-
Gravity side impact sensor (G-SIS) bolt
8.8 - 9.8
0.9 - 1.0
6.5 - 7.2
-

Special service tools
Special Service Tools

Tool Name / Number
Illustration
Description
Deployment tool
0957A-34100A

Used for deploying 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
0957A-38200

Simulator to check the resistance of airbag wiring harness
Dummy adapter
0957A-2W200

Used with the dummy (0957A-38200)
when checking the resistance of SAB
Dummy adapter
0957A-2G000

Used with the dummy (0957A-38200)
when checking the resistance of DAB, PAB, CAB, BPT

DAB : Driver Airbag

PAB : Passenger Airbag

SAB : Side Airbag

CAB : Curtain Airbag

BPT : Seat Belt Pretensioner

Description and operation
Warning Lamp Activation
Warning Lamp Behavior after Ignition On

As soon as the operating voltage is applied to the SRSCM ignition input, the SRSCM activates the warning lamp for the LED lamp check.

The lamp shall turn on for 6 seconds during the initialization phase and off afterward.

To alert the driver, the warning lamp shall turn on for 6 seconds and off for one second then on continuously after the operating voltage is applied if any active fault exists.

1.

Active fault or historical fault counter is greater or equal to 10.

2.

Normal or historical fault counter is less than 10.

3.

When the ignition is switched ON during variant coding (EOL) mode, the airbag warning lamp will illuminate and blink at intervals of 1 second until the coding is completed.

In case the variant coding is completed properly, the airbag warning lamp will turn on for 6 seconds, and then off. Otherwise, the airbag warning lamp will continuously blink at intervals of 1 second.

(1)

In case the variant coding is completed properly.

(2)

In case the variant coding is not completed.

When there is active fault in airbag system or SRSCM internal fault, the variant coding (EOL) cannot be completed. In this case, perform variant coding (EOL) procedure again after troubleshooting with the KDS.

SRSCM Independent Warning Lamp Activation

There are certain fault conditions in which the SRSCM cannot function and thus cannot control the operation of the standard warning lamp. In these cases, the standard warning lamp is directly activated by appropriate circuitry that operates independently of the SRSCM. These cases are:

1.

Loss of battery supply to the SRSCM : warning lamp turned on continuously.

2.

Loss of internal operating voltage : warning lamp turned on continuously.

3.

Loss of Microprocessor operation : warning lamp turned on continuously.

4.

SRSCM not connected : warning lamp turned on continuously.

Repair procedures
Component Replacement After Deployment
  

Before any SRS repairs, use the KDS to check for DTCs. Refer to the Diagnostic Trouble Code list for repairing related DTCs.

When the front airbag(s) deployed after a collision, replace the following items.

SRSCM

Deployed airbag(s)

Seat belt pretensioner(s)

Front impact sensors

Inspect the clock spring for heat damage.

For any damage found, replace the clock spring.

When the side/curtain airbag(s) deployed after a collision, replace the following items.

SRSCM

Deployed airbag(s)

Side impact sensor(s) for the deployed side(s)

After the vehicle is completely repaired, confirm the SRS airbag system is OK.

Turn the ignition switch ON; the SRS indicator should light on for about six seconds and then off.

Components and components location
Components Location

1. Driver Airbag (DAB)
2. Clock Spring
3. Pressure Side Impact Sensor (P-SIS)
4. Side Airbag (SAB)
5. Passenger Airbag (PAB)
6. Front Impact Sensor (FIS)
7. Curtain Airbag (CAB)
8. Supplemental Restraint System Control Module (SRSCM)
9. Airbag Warning Lamp
10. Gravity Side Impact Sensor (G-SIS)

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