2003 DAEWOO MATIZ Ignition

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

SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B–11
DAEWOO M-150 BL2
Diagnostic System Check (Cont’d)
Step Action Value(s) Yes No

3

1. Check fuse F2.
Is the fuse F2 blown?
–

Go to Step 4

Go to Step 5
4 1. Replace fuse F2.
Is the repair complete? – System OK –



5




1. Disconnect the electrical connector C208.
2. Check for a short to ground between fuse F2 and
terminal 2 of connector C208.
Is wiring harness shorted to ground?


–



Go to Step 6



Go to Step 7

6

Repair a short to ground between fuse F2 and
terminal 2 of connector C208.
Is the repair complete?
–

System OK

–

7



1. Disconnect the SDM electrical connector.
2. Check for a short to ground between terminal 2
and terminal 5 of SDM connector.
Is wiring harness shorted to ground?


–



Go to Step 15



Go to Step 8

8



Use an ohmmeter to check for continuity between
terminal A (4) of the DLC and ground G201.
Does the ohmmeter show the specified value?


≈0



Go to Step 9


Go to Step 10

9

Repair the open DLC ground circuit.
Is the repair complete?
–

System OK

–



10



1. Turn the ignition ON.
2. Check the voltage at the cigar lighter positive
terminal.
Does the voltmeter show the specified value?

11–14V


Go to Step 12


Go to Step 11

11


Repair the power supply for the cigar lighter socket.
Is the repair complete?
–

System OK

–



12



Check for a short to ground of open circuit between
terminal J (13) of the DLC and terminal 4 of
connector 208.
Is wiring harness shorted to ground or open?

–


Go to Step 13


Go to Step 14

13



Repair a short to ground or open circuit between
terminal J (13) of the DLC and terminal 4 of
connector C208.
Is the repair complete?


–



System OK



–



14




Check for a short to ground or open between
terminal 4 of connector C208 and terminal 9 of the
SDM connector.
Is wiring harness shorted to ground or open?



–



Go to Step 15



Go to Step 16
15 Replace the SDM waring harness.
Is the repair complete?
–

System OK

–
16

Replace the SDM.
Is the repair complete?

–

System OK

–

8B–12 SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)
DAEWOO M-150 BL2
FAULT CODES
Fault Codes Fault Contents
01

Driver Firing Circuit, Resistance Too High
02 Driver Firing Circuit, Resistance Too Low
03 Driver Firing Circuit, Short to Ground
04 Driver Firing Circuit, Short to Battery Ground 05 Passenger Firing Circuit, Resistance Too High
06

Passenger Firing Circuit, Resistance Too Low
07 Passenger Firing Circuit, Short to Ground
08 Passenger Firing Circuit, Short to Battery Voltage
09 Driver Pretensioner Circuit, Resistance Too High
10

Driver Pretensioner Circuit, Resistance Too Low
11 Driver Pretensioner Circuit, Short to Ground
12 Driver Pretensioner Circuit, Short to Battery Voltage
13 Passenger Pretensioner Circuit, Resistance Too High
14

Passenger Pretensioner Circuit, Resistance Too Low
15 Passenger Pretensioner Circuit, Short to Ground
16 Passenger Pretensioner Circuit, Short to Battery Voltage
17 Connection Between Driver Firing Circuit and Passenger Firing Circuit
18

Connection Between Driver Firing Circuit and Driver Pretensioner Circuit
19

Connection Between Driver Firing Circuit and Passenger Pretensioner Circuit
20 Connection Between Passenger Firing Circuit and Driver Pretensioner Circuit
21 Connection Between Passenger Firing Circuit and Passenger Pretensioner Circuit 22 Connection Between Driver Pretensioner Circuit and Passenger Pretensioner Circuit
23

Ignition Input Circuit, Voltage Too High
24 Ignition Input Circuit, Voltage Too Low
25 Warning Lamp Failure
31 SDM Internal Fault
32

SDM Crash Recorded

8B–14 SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)
DAEWOO M-150 BL2
D1AB302B
DIAGNOSTIC TROUBLE CODE (DTC) 01
DRIVER FIRING 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
airbag module firing circuit. The SDM allows a very
small amount of current to flow through the driver airbag
module firing circuit. The SDM monitors the circuit re-
sistance during this check.
DTC 01 Will Set When

The combined resistance of the driver airbag module,
the harness wiring, and the connector contacts is
above a specified value, as with 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 with an ohmmeter. An ohmmeter’s battery
can deploy the airbag and cause injury.
Caution: Do not attempt to repair the supplemental
inflatable restraints (SIR) wiring harness. A repair
can create a high-resistance connection which can
keep the airbags from deploying when needed, re-
sulting in injury.

8B–16 SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)
DAEWOO M-150 BL2
D1AB302B
DIAGNOSTIC TROUBLE CODE (DTC) 02
DRIVER FIRING 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
airbag module firing circuit. The SDM allows a very
small amount of current to flow through the airbag
module firing circuit. The SDM monitors the circuit re-
sistance during this check.
DTC 02 Will Set When

The combined resistance of the driver airbag module,
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.

8B–18 SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)
DAEWOO M-150 BL2
D1AB302B
DIAGNOSTIC TROUBLE CODE (DTC) 03
DRIVER FIRING 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
airbag module firing circuit. The SDM allows a very
small amount of current to flow through the driver airbag
module firing circuit. The SDM monitors the voltage
during this check.
DTC 03 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.

8B–20 SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)
DAEWOO M-150 BL2
D1AB302B
DIAGNOSTIC TROUBLE CODE (DTC) 04
DRIVER FIRING 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
airbag module firing circuit. The SDM allows a very
small amount of current to flow through the circuit. The
SDM monitors voltage during this check.
DTC 04 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.

8B–22 SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)
DAEWOO M-150 BL2
D1AB302B
DIAGNOSTIC TROUBLE CODE (DTC) 05
PASSENGER FIRING 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 airbag firing 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 05 Will Set When

The combined resistance of the passenger airbag
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.