2003 DAEWOO MATIZ Service Repair Manual

8B–38 SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)
DAEWOO M-150 BL2
D1AB302B
DIAGNOSTIC TROUBLE CODE (DTC) 13
PASSENGER 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
passenger 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 13 Will Set When

The combined resistance of the passenger preten-
sioner module, the harness wiring, and the connector
contacts is above a specified value, as in an open cir-
cuit.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–39
DAEWOO M-150 BL2
DTC 13 – Passenger 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
passenger seat belt pretensioner module.
Is the connector disconnected?


–



Go to Step 2



Go to Step 3

2



1. Reconnect the passenger 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
passenger 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 passenger seat belt
pretensioner module.
3. Connect an ohmmeter to the terminals on the
SDM side of the wiring harness connector for the
passenger seat belt pretensioner module.

Refer to ‘‘Diagnostic Illustration 19’’ 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 13 still show as a current fault?


–



Go to Step 5



System OK


5



1. Replace the passenger 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–40 SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)
DAEWOO M-150 BL2
D1AB302B
DIAGNOSTIC TROUBLE CODE (DTC) 14
PASSENGER 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
passenger 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 14 Will Set When

The combined resistance of the passenger preten-
sioner module, the harness wiring, and the connector
contacts is below a specified value, as in a short cir-
cuit between the wires to the passenger airbag mod-
ule.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 could deploy the airbag and
cause injury.

SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B–41
DAEWOO M-150 BL2
DTC 14 – Passenger 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 passenger seat
belt pretensioner module on the SDM side of the
connector.

Refer to ‘‘Diagnostic Illustration 19’’ 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 14 still show as a current fault?



–




Go to Step 3




System OK



3



1. Replace the passenger 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–42 SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)
DAEWOO M-150 BL2
D1AB302B
DIAGNOSTIC TROUBLE CODE (DTC) 15
PASSENGER PRETENSIONER CIRCUIT, SHORT TO GROUND
Circuit Description
When the ignition switch is turned ON, the sensing and
diagnostic module (SDM) will diagnose any malfunc-
tions within itself.
After passing these tests, the SDM will check the
passenger pretensioner circuit. The SDM allows a very
small amount of current to flow through the circuit. The
SDM monitors the voltage during this check.
DTC 15 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–43
DAEWOO M-150 BL2
DTC 15 Passenger 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
passenger 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 passenger seat belt
pretensioner 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
passenger seat belt pretensioner module.

Refer to ‘‘Diagnostic Illustration 20’’ 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 15 still show as a current fault?


–



Go to Step 5



System OK



5



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

–



Go to
Diagnostic
System Check


–

8B–44 SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)
DAEWOO M-150 BL2
D1AB302B
DIAGNOSTIC TROUBLE CODE (DTC) 16
PASSENGER 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
passenger pretensioner circuit. The SDM allows a very
small amount of current to flow through the circuit. The
SDM monitors the voltage during this check.
DTC 16 Will Set When

The firing circuit is shorted to the voltage.Test Description
Caution: Before testing, disconnect the negative
battery cable. Wait 1 minute for the SDM capacitor
to discharge. The capacitor supplies the reserve
power to deploy the airbags, even if the battery is
disconnected. Unintentional deployment of the air-
bags can cause injury.

SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B–45
DAEWOO M-150 BL2
DTC 16 – Passenger 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 passenger 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
passenger 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 passenger seat belt
pretensioner 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 passenger seat belt
pretensioner module.

Refer to ‘‘Diagnostic Illustration 21’’ 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 16 still show as a current fault?


–



Go to Step 5



System OK



5



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

–



Go to
Diagnostic
System Check


–