2003 DAEWOO MATIZ Service Repair Manual

8B–30 SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)
DAEWOO M-150 BL2
D1AB302B
DIAGNOSTIC TROUBLE CODE (DTC) 09
DRIVER PRETENSIONER CIRCUIT, RESISTANCE TOO HIGH
Open Circuit
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
driver pretensioner circuit. The SDM allows a very small
amount of current to flow through the circuit. The SDM
monitors the circuit resistance during this check.
DTC 09 Will Set When

The combined resistance of the driver pretensioner
module, the harness wiring, and the connector con-
tacts is above a specified value, as in an open circuit.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: Never measure the resistance of an airbag
module. If the anti-deployment shorting bar on the
module-side of the connector is not working prop-
erly, the meter’s battery can deploy the airbag and
cause injury.

SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B–31
DAEWOO M-150 BL2
DTC 09 – Driver Pretensioner Circuit, Resistance Too High
Step Action Value(s) Yes No




1




1. Disconnect the negative battery cable.
2. Wait 1 minute for the SDM capacitor to discharge.
3. Examine the wiring and the connector at the
driver seat belt pretensioner module.
Is the connector disconnected?


–



Go to Step 2



Go to Step 3

2



1. Reconnect the driver seat belt pretensioner
module connector.
2. Reconnect the negative battery cable.
Is the repair complete?


–



Go to
Diagnostic
System Check



–










3











1. Disconnect the electrical connector for the driver
seat belt pretensioner module.
2. Disconnect the electrical connector at the SDM.

The shorting bar at the disconnected SDM
connector will create a complete circuit be-
tween the wires from the driver seat belt pre-
tensioner module.
3. Connect an ohmmeter to the terminals on the
SDM side of the wiring harness connector for the
driver seat belt pretensioner module.

Refer to ‘‘Diagnostic Illustration 16’’ in this
section.
Does the ohmmeter show the specified value?










≈ 0











Go to Step 4










Go to Step 6




4




1. Replace the SDM.
2. Reconnect the negative battery cable.
3. Set the scan tool for CODE ERASE.
4. Do the diagnostic system check.
Does the code 09 still show as a current fault?


–



Go to Step 5



System OK



5



1. Replace the driver seat belt pretensioner module.
2. Reconnect the negative battery cable.
Is the repair complete?

–



Go to
Diagnostic
System Check

–



6



1. Replace the supplemental inflatable restraints
(SIR) wiring harness.
2. Reconnect the negative battery cable.
Is the repair complete?

–



Go to
Diagnostic
System Check


–

8B–32 SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)
DAEWOO M-150 BL2
D1AB302B
DIAGNOSTIC TROUBLE CODE (DTC) 10
DRIVER PRETENSIONER CIRCUIT, RESISTANCE TOO LOW
Short Circuit
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 driver
pretensioner circuit. The SDM allows a very small
amount of current to flow through the pretensioner cir-
cuit. The SDM monitors the circuit resistance during this
check.
DTC 10 Will Set When

The combined resistance of the driver pretensioner
the harness wiring, and the connector contacts is be-
low a specified value, as with a short circuit between
the wires to the driver airbag module.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: Never measure the resistance of an airbag
module with an ohmmeter. An ohmmeter’s battery
can deploy the airbag and cause injury.

SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B–33
DAEWOO M-150 BL2
DTC 10 – Driver Pretensioner Circuit, Resistance Too Low
Step Action Value(s) Yes No






1






1. Disconnect the negative battery cable.
2. Connect an ohmmeter to the terminals of the
wiring harness connector for the driver seat belt
pretensioner module on the SDM side of the
connector.

Refer to ‘‘Diagnostic Illustration 16’’ in this
section.
Does the ohmmeter show the specified value?




∞





Go to Step 2





Go to Step 4




2





1. Replace the SDM.
2. Reconnect the negative battery cable.
3. Set the scan tool to CODE ERASE.
4. Do the diagnostic system check.
Does the code 10 still show as a current fault?



–




Go to Step 3




System OK

3

1. Replace the driver seat belt pretensioner module.
2. Reconnect the negative battery cable.
Is the repair complete?
–


Go to
Diagnostic
System Check
–

4



1. Replace the supplemental inflatable restraints
(SIR) wiring harness.
2. Reconnect the negative battery cable.
Is the repair complete?


–



Go to
Diagnostic
System Check



–

8B–34 SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)
DAEWOO M-150 BL2
D1AB302B
DIAGNOSTIC TROUBLE CODE (DTC) 11
DRIVER PRETENSIONER CIRCUIT, SHORT TO GROUND
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 driver
pretensioner circuit. The SDM allows a very small
amount of current to flow through the driver pretensioner
circuit. The SDM monitors the voltage during this check.
DTC 11 Will Set When

The firing circuit is shorted to ground.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.

SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B–35
DAEWOO M-150 BL2
DTC 11 Driver Pretensioner Circuit, Short To Ground
Step Action Value(s) Yes No




1




1. Disconnect the negative battery cable.
2. Wait 1 minute for the SDM capacitor to discharge.
3. Visually inspect the supplemental inflatable
restraints (SIR) wiring harness.
Is there any visible damage to the SIR harness?


–



Go to Step 2



Go to Step 3



2



1. Replace the SIR wiring harness.
2. Reconnect the negative battery cable.
Is the repair complete?

–



Go to
Diagnostic
System Check

–











3











1. Disconnect the electrical connector from the
driver seat belt pretensioner module.
2. Disconnect the electrical connector at the SDM.

The shorting bar at the disconnected SDM
connector will create a complete circuit be-
tween the wires from the driver seat belt pre-
tensioner module.
3. Use an ohmmeter to check the continuity
between ground and one of the terminals at the
SDM side of the wiring harness connector for the
driver seat belt pretensioner module.

Refer to ‘‘Diagnostic Illustration 17’’ in this
section.
Is the resistance less than the specified value?









∞










Go to Step 2










Go to Step 4




4




1. Replace the SDM.
2. Reconnect the negative battery cable.
3. Set the scan tool to CODE ERASE.
4. Do the diagnostic system check.
Does the code 11 still show as a current fault?


–



Go to Step 5



System OK

5


1. Replace the driver seat belt pretensioner module.
2. Reconnect the negative battery cable.
Is the repair complete?

–


Go to
Diagnostic
System Check

–

8B–36 SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)
DAEWOO M-150 BL2
D1AB302B
DIAGNOSTIC TROUBLE CODE (DTC) 12
DRIVER PRETENSIONER CIRCUIT, SHORT TO BATTERY VOLTAGE
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 driver
pretensioner circuit. The SDM allows a very small
amount of current to flow through the circuit. The SDM
monitors voltage during this check.
DTC 12 Will Set When

The firing circuit is shorted to voltage.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.

SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B–37
DAEWOO M-150 BL2
DTC 12 – Driver Pretensioner Circuit, Short To Battery Voltage
Step Action Value(s) Yes No







1







1. Disconnect the battery negative cable.
2. Wait 1 minute for the SDM capacitor to discharge.

The capacitor supplies reserve power to deploy
the driver seat belt pretensioner even if the
battery has been disconnected.
3. Visually inspect the supplemental inflatable
restraints (SIR) wiring harness.
Is there any visible damage to the SIR wiring
harness?





–






Go to Step 2






Go to Step 3



2



1. Replace the SIR wiring harness.
2. Reconnect the negative battery cable.
Is the repair complete?

–



Go to
Diagnostic
System Check

–











3











1. Disconnect the electrical connector for the driver
seat belt pretensioner module.
2. Disconnect the electrical connector at the SDM.

The shorting bar at the disconnected SDM
connector will create a complete circuit be-
tween the wires from the driver seat belt pre-
tensioner module.
3. Use a multimeter to check the voltage at one of
the terminals on the SDM side of the SIR wiring
harness connector for the driver seat belt
pretensioner module.

Refer to ‘‘Diagnostic Illustration 18’’ in this
section.
Is the voltage greater than the specified value?









0 v










Go to Step 2










Go to Step 4




4




1. Replace the SDM.
2. Reconnect the negative battery cable.
3. Set the scan tool to CODE ERASE.
4.Do the diagnostic system check.
Does the code 12 still show as a current fault?


–



Go to Step 5



System OK



5



1. Replace the driver seat belt pretensioner module.
2. Reconnect the negative battery cable.
Is the repair complete?

–



Go to
Diagnostic
System Check

–