Hyundai Elantra: Airbag Module / Driver Airbag (DAB) Module and Clock Spring

Hyundai Elantra (CN7) 2021-2024 Service Manual / Restraint / Airbag Module / Driver Airbag (DAB) Module and Clock Spring

Description and operation

Description

•	Driver Airbag (DAB) DAB is installed in the steering wheel, and electrically connected to the SRSCM via clock spring. It is deployed during frontal impact to protect the driver.

•

Clock Spring

Clock spring delivers actuation signal, generated by the sensors installed in the front and right/left sides of a vehicle, to the inflator (gas generator) of the driver air bag module via internal cable.

It also delivers actuation signal of the steering wheel remote control switch and horn to relevant systems via internal cable.

•	Never attempt to measure the circuit resistance of the airbag module (squib) even if you are using the specified tester. If the circuit resistance is measured with a tester, accidental airbag deployment will result in serious personal injury.

Components and components location

Components

[Normal type]

1. Driver Airbag (DAB)
2. Steering Wheel

3. Clock spring assembly

[N Line]

1. Driver Airbag (DAB)
2. Steering Wheel

3. Clock spring assembly

Repair procedures

Inspection

Driver Airbag (DAB)

•	Never attempt to measure the circuit resistance of the airbag module (squib) even if you are using a specified tester. If the circuit resistance is measured with a tester, accidental airbag deployment will result in serious personal injury.

1.	Check the airbag module for denting, cracking or deformation.

2.	Check hooks and connectors for damage, terminals for deformities, and harness for binds.

3.	Check airbag inflator case for dents, cracks or deformities. [Normal type] [N Line]

Clock Spring

1.	If any improper parts are found during inspection, replace the clock spring with a new one.

2.	Check connectors and protective tube for damage, and terminals for deformities.

Removal

Set the front tires straight-ahead.

•	If the steering wheel is not aligned to the center position, it may cause the disconnection and/or bending of the internal cable by improper steering wheel rotation.

Disconnect the negative (-) battery terminal.

•	Disconnect the battery negative cable, and wait for at least three minutes before beginning work.

Remove the driver airbag module.

–	Put a flat tool into a guide hole located in the left/right of steering wheel and press a DAB fastening pin (A).

[Normal type]

[N Line]

•	After inserting the tool, press the DAB fixed pin in the direction of the arrow as illustration below.

4.	Remove the airbag module from the steering wheel after disconnecting the module connector (A) and horn connector (B). [Normal type] [N Line]

5.	Remove the steering wheel. (Refer to Steering System - "Steering Column and Shaft")

6.	Loosen the steering wheel column shroud panel. (Refer to Body (Interior and Exterior) - "Steering Wheel Column Shroud Panel")

7.	Press the lock pin and then separate the connectors (A).

8.	Loosen the clamp mounting screw (A) and then remove the multifunction switch assembly (B).

Installation

Set the front tires straight-ahead.

•	If the steering wheel is not aligned to the center position, it may cause the disconnection and/or bending of the internal cable by improper steering wheel rotation.

Check if the battery (-) cable is disconnected.

•	Disconnect the battery negative cable, and wait for at least three minutes before beginning work.

Factory setting for the clock spring is neutral.

–	If white cable is visible through the product's 10 O' Clock Neutral Check Window, then the spring is at neutral.

–	If white cable is not visible through the product's 10 O' Clock Neutral Check Window, then manually adjust the setting to neutral.

Neutral Check Window : Normal	Neutral Check Window : Fault

White cable is visible through 10 O' Clock Neutral Check Window	White cable is not visible through 10 O' Clock Neutral Check Window

Clock spring manual neutral setting procedure.

(1)	Press the Auto Lock at 6 O' Clock and turn clockwise 3 rotations.

(2)	Press the Auto Lock at 6 O' Clock and turn counter-clockwise 3 rotations.

(3)	If white cable is visible through the 5 O' Clock Neutral Check Window, then the spring is set to neutral.

5.	Connect the clock spring wiring harness connector and horn wiring harness connector in the clock spring.

6.	Insert steering column shroud and install the mounting screw.

7.	Install the steering wheel. (Refer to Steering System - "Steering Wheel")

8.	Install the airbag module.

9.	Reconnect the battery negative (-) terminal.

10.

After installing the airbag, confirm proper airbag system and horn operation.

•	Turn the ignition switch ON the airbag warning lamp should be turned on for about 6 seconds and then go off.

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Rear center seat belt

When using the rear center seat belt, the buckle with the “CENTER” mark must be used.

WARNING

Make sure that the seatback is locked in place when using the rear center seat belt.

If not, the seatback may move when there is a sudden stop or collision, which could result in serious injury.