2003 DAEWOO MATIZ airbag off

8B–4 SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)
DAEWOO M-150 BL2
If there is a failure of the sensing and diagnostic module
or the external circuits, the SIR warning lamp in the in-
strument cluster turns ON.
As a system check, the SIR warning lamp also turns ON
when the ignition is first switched to the ON position.
Correct Functioning
The system is working properly if:

The SIR warning lamp turns OFF after approximately
four seconds.
Faulty Functioning
The system is not working properly, meaning one of the
SIR components or the wiring connector is faulty, if:

The SIR warning lamp fails to turn ON when the
ignition is first switched ON.

The SIR warning lamp remains ON.
D110B009A
CLOCK SPRING
The clock spring:

Is on the steering column.

Contains a coil that is the electrical contact between
the steering column wiring harness and the driver
side airbag module.

Is part of the circuit for the horn.
Notice: Turning the steering wheel more than three and
one-quarter turns may damage the clock spring.
Turning the steering wheel:

In one direction tightens the coil.

In the opposite direction loosens the coil.

More than three and one-quarter turns may damage
the clock spring.
Caution: Disassembling the clock spring can cause
injury and vehicle damage.The clock spring should never be disassembled.
The clock spring must be replaced if the airbags have
been deployed.
D110B008A
WIRING HARNESS/CONNECTORS
The connector for the sensing and diagnostic module
(SDM) has a built-in shorting bar that will turn ON the
warning lamp if there is a poor connection at the SDM.
As an anti-deployment mechanism, additional shorting
bars are in the

Connector for the clock spring at the lower steering
column.

Passenger airbag module connector.

SDM connector.
When these connectors are separated, the shorting
bars will short circuit any current which is applied, pre-
venting the current from reaching the airbag modules.
SIR SYSTEM
The supplemental inflatable restraints (SIR) system is a
safety device used in conjunction with the seat belts.
The airbag does not replace the function of the seat belt.
The driver and the passengers must always fasten their
seat belts and adjust them for a proper fit.
The SIR is designed to protect the driver and the front
seat passenger in the event of a significant frontal im-
pact to the vehicle. The airbags deploy if the force is ap-
plied from a direction within 30 degrees of the vehicle’s
centerline and above 25 km/h (15 mph) speed.
The SIR consists of a

Driver airbag module.

Passenger airbag module.

SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B–5
DAEWOO M-150 BL2

Sensing and diagnostic module.

Steering column clock spring.

Wiring harness.

SIR malfunction warning lamp.
D110B001
GENERAL PRECAUTIONS
The supplemental inflatable restraints (SIR) warning
lamp must illuminate when the ignition is switched ON,
and then turn OFF after approximately 4 seconds.
There is a fault in the airbag system if

The warning lamp does not turn OFF.

The warning lamp illuminates while the vehicle is in
operation.If the warning lamp indicates there is a fault in the airbag
system, assume that the SIR system may not be
functional.
Caution: Failure to follow all service procedures in
the correct sequence can cause the airbag system to
deploy unexpectedly and possibly cause a serious
injury.
Only trained personnel at franchised Daewoo dealers
and authorized Daewoo service dealerships may service
the airbag system.
Never attempt to disassemble, repair, or reuse the

Airbag modules.

Clock spring.

Sensing and diagnostic module.

Wiring harness.
When making SIR repairs,

Inspect any SIR part before it is installed.

Use only new parts.

Do not install used SIR parts from other vehicles.

Do not install any part that has been dropped or that
has dents, cracks, or other defects.
AIRBAG DEPLOYMENT CONDITION
Airbag is designed to deploy under 30 left/right angle
barrier and above 25 km/h (15 mph) speed.
Concrete Barrier Deployment Condition
In case of the 0 frontal concrete battier, airbag may
deploy above 25 km/h (15 mph) speed.

8B–10 SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)
DAEWOO M-150 BL2
SYSTEM CHECK
D1AB301B
Caution: Use only the scan tool to check the airbag
modules and the sensing and diagnostic module
(SDM). Never measure the resistance of an airbag
module with an ohmmeter. An ohmmeter’s battery
can deploy the airbag and cause injury.
Caution: Before testing, disconnect the negative
battery cable. Wait 1 minute for the SDM capacitor
to discharge. The capacitor supplies reserve power
to deploy the airbags, even if the battery is discon-
nected. Unintentional deployment of the airbags
can cause injury.Caution: Do not attempt to repair the supplemental
inflatable restraints (SIR) wiring harness. An SIR re-
pair can create a high-resistance connection which
can keep the airbags from deploying when needed,
resulting in injury.
Circuit Description
When the ignition switch is turned ON, the SDM is able
to send serial data from the terminal 9 of the SDM to the
terminal J (13) of the assembly line diagnostic link.
Diagnostic System Check
Step Action Value(s) Yes No



1



1. Turn the ignition ON.
2. Check the warning lamp.
Does the warning lamp turn off after 4 seconds?

–


System OK


Go to Step 2






2






1. Connect the scan tool cable to the DLC.
2. Connect the scan tool power cable to the cigar
lighter socket.
3. Select the airbag main menu on the scan tool.
4. Select “Fail Code View & Clear “ from the
displayed menu of the diagnostic test codes
(DTC).
Are there any active fault codes?




–






Go to the DTC
table for the
fault indicated





Go to Step 3

8B–60 SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)
DAEWOO M-150 BL2
D1AB301B
DIAGNOSTIC TROUBLE CODE (DTC) 25
WARNING LAMP FAILURE
Circuit Description
When the ignition switch is turned ON, the sensing and
diagnostic module (SDM) will perform tests to diagnose
any malfunctions within itself.
After passing these tests, the SDM will check the warn-
ing lamp circuit. The SDM constantly measures the volt-
age at the warning lamp output in order to determine if
the lamp is ON or OFF at the correct time.
DTC 25 Will Set When

The lamp is ON when it should be OFF.

The lamp is OFF when it should be ON.
Diagnostic Aids
When the warning lamp operates correctly, the warning
lamp turns ON for approximately four seconds after the
ignition is first switched ON, and then The warning lamp
turns OFF.When the warning lamp operates incorrectly, the warn-
ing lamp continues to blink four times per second,
demonstrating that the SDM is faulty and must be re-
placed.
Test Description
Caution: Before testing, disconnect the negative
battery cable. Wait 1 minute for the SDM capacitor
to discharge. The capacitor supplies reserve power
to deploy the airbags, even if the battery is discon-
nected. Unintentional deployment of the airbags
can cause injury.
Caution: If the short is in the supplemental inflatable
restraints (SIR) wiring harness, do not attempt to re-
pair it. The repair might create a high-resistance
connection which can keep the airbags from deploy-
ing when needed, resulting in injury. Replace the
SIR wiring harness if it is damaged.

9E–12 INSTRUMENTATION/DRIVER INFORMATION
DAEWOO M-150 BL2
D19B515A
Installation Procedure
1. Connect the electrical connector and the speedom-
eter cable.
2. Install the instrument cluster assembly to instrument
panel with screws.
3. Install the instrument cluster trim panel to the instru-
ment panel. Refer to “Instrument Cluster Trim Pan-
el” in this section.
4. Connect the negative battery cable.
D109B516
INSTRUMENT PANEL
(Left–Hand Drive Shown, Right–Hand
Drive Similar)
Removal Procedure
1. Disconnect the negative battery cable.
2. Remove the driver’s airbag module from the steer-
ing wheel. Refer to Section 8B, Supplemental Inflat-
able Restraints (SIR) (For the vehicle equipped with
the airbag).
3. Remove the steering wheel from the steering col-
umn. Refer to Section 6E, Steering Wheel and Col-
umn.
4. Remove the steering column trim cover. Refer to
Section 6E, Steering Wheel and Column.
5. Remove the signal lamp switch and the wiper
switch. Refer to Section 6E, Steering Wheel and
Column.
6. Pry off the A–pillar trim panels. Refer to Section 9G,
Interior Trim.
7. Remove the instrument cluster trim panel from the
instrument panel.

Remove the screws (1)

Using a flathead screwdriver, remove the instru-
ment cluster trim panel (2).
Notice: To prevent the instrument panel damage, cover
the flathead screwdriver with a soft cloth.
D109B517
8. Remove the hood latch release lever from the in-
strument panel. Refer to Section 9R, Body Front
End.
9. Remove the glove box assembly from the instru-
ment panel. Refer to “Glove Box” in this section.
10. Remove the passenger’s airbag module from the in-
strument panel. Refer to Section 8B, Supplemental
Inflatable Restraints (SIR) (For vehicle equipped
with the airbag).
11. Put aside the floor console after removing the
screws (1).