tow DAEWOO LACETTI 2004 Service Workshop Manual

SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B – 35
DAEWOO V–121 BL4
DTC 12
Driver Belt Pretensioner Deployment Loop Is Shorted To
Power
CAUTION : The sensing and diagnostic module(SDM)
can maintain sufficient voltage to deploy the airbags
and pretensioners for 1 minute after the ignition is
OFF and the fuse has been removed. If the airbags
and pretensioners are not disconnected, do not be-
gin service until one minute has passed after discon-
necting power to SDM. Otherwise, injury could result.
CAUTION : During service procedure, be very careful
when handling the SDM. Never strike or jar the SDM.Never power the supplemental inflatable re-
straints(SIR) when the SDM is not rigidly attached to
the vehicle. All SDM mounting bolts must be carefully
tightened , and the arrow on the SDM must be point
toward the front of the vehicle to ensure proper op-
eration of the SIR. The SDM could be activated if it is
powered when it is not rigidly attached to the vehicle,
resulting in unexpected deployment and possible in-
jury.
Step
ActionValue(s)YesNo
11. Confirm the ignition switch ”OFF”.
2. Wait for a minute to discharge the SDM char-
ger.–Go to Step 2–
2Visually inspect the connector and the wiring of air-
bag. Is the airbag wiring damaged?–Replace the
airbag wiring.Go to Step 3
3Check the resistance between the SDM and the
high, low wiring of driver belt pretensioner and the
battery. Is the resistance 10KΩ?
10K ΩGo to Step 4Replace the
airbag wiring.
41. Replace the SDM.
2. Confirm the ignition switch ”ON”.
3. Erase the DTC using scan tool.
4. Perform the SIR Diagnostic System Check.
5. If the DTC is not removable, then replace the
driver belt pretensioner.–––

SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B – 37
DAEWOO V–121 BL4
DTC 13
Passenger Belt Pretensioner Deployment Loop
Resistance Is High
CAUTION : The sensing and diagnostic module(SDM)
can maintain sufficient voltage to deploy the airbags
and pretensioners for 1 minute after the ignition is
OFF and the fuse has been removed. If the airbags
and pretensioners are not disconnected, do not be-
gin service until one minute has passed after discon-
necting power to SDM. Otherwise, injury could result.
CAUTION : During service procedure, be very careful
when handling the SDM. Never strike or jar the SDM.Never power the supplemental inflatable re-
straints(SIR) when the SDM is not rigidly attached to
the vehicle. All SDM mounting bolts must be carefully
tightened , and the arrow on the SDM must be point
toward the front of the vehicle to ensure proper op-
eration of the SIR. The SDM could be activated if it is
powered when it is not rigidly attached to the vehicle,
resulting in unexpected deployment and possible in-
jury.
Step
ActionValue(s)YesNo
1Visually inspect the connector and the wiring of pas-
senger belt pretensioner. Is the connector discon-
nected?–Connect the
connector.Go to Step 2
21. Confirm the ignition switch ”OFF”.
2. Disconnect the connector of the passenger belt
pretensioner.
3. Disconnect the connector of SDM wiring.
4. Check the resistance between the terminal 1,2
of SDM and the terminal 1,2 of passenger belt
pretensioner.Is the resistance 10KΩ?
10K ΩGo to Step 3Replace the
airbag wiring.
31. Replace the SDM.
2. Confirm the ignition switch ”ON”.
3. Erase the DTC using scan tool.
4. Perform the SIR Diagnostic System Check.
Does the DTC still exist?–Go to Step 4System is OK.
4Replace the passenger belt pretensioner.–––

SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B – 39
DAEWOO V–121 BL4
DTC 14
Passenger Belt Pretensioner Deployment Loop
Resistance Is Low
CAUTION : The sensing and diagnostic module(SDM)
can maintain sufficient voltage to deploy the airbags
and pretensioners for 1 minute after the ignition is
OFF and the fuse has been removed. If the airbags
and pretensioners are not disconnected, do not be-
gin service until one minute has passed after discon-
necting power to SDM. Otherwise, injury could result.
CAUTION : During service procedure, be very careful
when handling the SDM. Never strike or jar the SDM.Never power the supplemental inflatable re-
straints(SIR) when the SDM is not rigidly attached to
the vehicle. All SDM mounting bolts must be carefully
tightened , and the arrow on the SDM must be point
toward the front of the vehicle to ensure proper op-
eration of the SIR. The SDM could be activated if it is
powered when it is not rigidly attached to the vehicle,
resulting in unexpected deployment and possible in-
jury.
Step
ActionValue(s)YesNo
1Visually inspect the connector and the wiring of pas-
senger belt pretensioner. Is the connector discon-
nected?–Connect the
connector.Go to Step 2
21. Confirm the ignition switch ”OFF”.
2. Disconnect the connector of the passenger belt
pretensioner.
3. Disconnect the connector of SDM wiring.
4. Check the resistance between the terminal 1
and 2 of passenger belt pretensioner. Is the
resistance ?Go to Step 3Replace the
airbag wiring.
31. Replace the SDM.
2. Confirm the ignition switch ”ON”.
3. Erase the DTC using scan tool.
4. Perform the SIR Diagnostic System Check.
Does the DTC still exist?–Go to Sep 4System is OK.
4Replace the passenger belt pretensioner.–––

SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B – 41
DAEWOO V–121 BL4
DTC 15
Passenger Belt Pretensioner Deployment Loop Is
Shorted To Ground
CAUTION : The sensing and diagnostic module(SDM)
can maintain sufficient voltage to deploy the airbags
and pretensioners for 1 minute after the ignition is
OFF and the fuse has been removed. If the airbags
and pretensioners are not disconnected, do not be-
gin service until one minute has passed after discon-
necting power to SDM. Otherwise, injury could result.
CAUTION : During service procedure, be very careful
when handling the SDM. Never strike or jar the SDM.Never power the supplemental inflatable re-
straints(SIR) when the SDM is not rigidly attached to
the vehicle. All SDM mounting bolts must be carefully
tightened , and the arrow on the SDM must be point
toward the front of the vehicle to ensure proper op-
eration of the SIR. The SDM could be activated if it is
powered when it is not rigidly attached to the vehicle,
resulting in unexpected deployment and possible in-
jury .
Step
ActionValue(s)YesNo
11. Confirm the ignition switch ”OFF”.
2. Wait for a minute to discharge the SDM char-
ger.
3. Visually inspect the connector and the air wir-
ing.
Is the connector disconnected?–Connect the
connector.Go to Step 2
21. Check the resistance between the SDM and
the high, low wiring of passenger belt preten-
sioner and the ground.. Is the resistance
10KΩ?
10K ΩGo to Step 3Replace the
airbag wiring.
31. Replace the SDM.
2. Confirm the ignition switch ”ON”.
3. Erase the DTC using scan tool.
4. Perform the SIR Diagnostic System Check.
Does the DTC still exist?–Go to Step 4System is OK.
4Replace the passenger belt pretensioner.–––

SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B – 43
DAEWOO V–121 BL4
DTC 16
Passenger Belt Pretensioner Deployment Loop Is
Shorted Power
CAUTION : The sensing and diagnostic module(SDM)
can maintain sufficient voltage to deploy the airbags
and pretensioners for 1 minute after the ignition is
OFF and the fuse has been removed. If the airbags
and pretensioners are not disconnected, do not be-
gin service until one minute has passed after discon-
necting power to SDM. Otherwise, injury could result.
CAUTION : During service procedure, be very careful
when handling the SDM. Never strike or jar the SDM.Never power the supplemental inflatable re-
straints(SIR) when the SDM is not rigidly attached to
the vehicle. All SDM mounting bolts must be carefully
tightened , and the arrow on the SDM must be point
toward the front of the vehicle to ensure proper op-
eration of the SIR. The SDM could be activated if it is
powered when it is not rigidly attached to the vehicle,
resulting in unexpected deployment and possible in-
jury.
Step
ActionValue(s)YesNo
11. Confirm the ignition switch ”OFF”.
2. Wait for a minute to discharge the SDM char-
ger.
3. Visually inspect the connector and the air wir-
ing.
Is the connector disconnected?–Connect the
connector.Go to Step 2
21. Check the resistance between the SDM and
the high, low wiring of passenger belt preten-
sioner and the battery.
Is the resistance 10KΩ?
10K ΩGo to Step 3Replace the
airbag wiring.
31. Replace the SDM.
2. Confirm the ignition switch ”ON”.
3. Erase the DTC using scan tool.
4. Perform the SIR Diagnostic System Check.
Does the DTC still exist?–Go to Step 4System is OK.
4Replace the passenger belt pretensioner.–––

SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B – 45
DAEWOO V–121 BL4
DTC 23
Battery Voltage High
CAUTION : The sensing and diagnostic module(SDM)
can maintain sufficient voltage to deploy the airbags
and pretensioners for 1 minute after the ignition is
OFF and the fuse has been removed. If the airbags
and pretensioners are not disconnected, do not be-
gin service until one minute has passed after discon-
necting power to SDM. Otherwise, injury could result.
CAUTION : During service procedure, be very careful
when handling the SDM. Never strike or jar the SDM.Never power the supplemental inflatable re-
straints(SIR) when the SDM is not rigidly attached to
the vehicle. All SDM mounting bolts must be carefully
tightened , and the arrow on the SDM must be point
toward the front of the vehicle to ensure proper op-
eration of the SIR. The SDM could be activated if it is
powered when it is not rigidly attached to the vehicle,
resulting in unexpected deployment and possible in-
jury.
Step
ActionValue(s)YesNo
1Check the vehicle’s charging system including alter-
nator. Refer toSection 1E, Engine Electrical.
Is the charging system OK?–Go to Step 3Go to Step 2
2Repair the charging system.
Is the repair completed?–Check the sys-
tem again.–
31. Disconnect the negative battery cable.
2. Replace the SDM. Is the repair completed?–Check the sys-
tem again.–

SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B – 47
DAEWOO V–121 BL4
DTC 24
Battery Voltage Low
CAUTION : The sensing and diagnostic module(SDM)
can maintain sufficient voltage to deploy the airbags
and pretensioners for 1 minute after the ignition is
OFF and the fuse has been removed. If the airbags
and pretensioners are not disconnected, do not be-
gin service until one minute has passed after discon-
necting power to SDM. Otherwise, injury could result.
CAUTION : During service procedure, be very careful
when handling the SDM. Never strike or jar the SDM.Never power the supplemental inflatable re-
straints(SIR) when the SDM is not rigidly attached to
the vehicle. All SDM mounting bolts must be carefully
tightened , and the arrow on the SDM must be point
toward the front of the vehicle to ensure proper op-
eration of the SIR. The SDM could be activated if it is
powered when it is not rigidly attached to the vehicle,
resulting in unexpected deployment and possible in-
jury.
Step
ActionValue(s)YesNo
1Check the fuse F1. Is the fuse blown?–Replace the
fuse F1.Go to Step 2
21. Confirm the ignition switch ”ON”.
2. Check the voltage from the fuse F1. Is the volt-
age 10.6V?
10.6VGo to Step 4Go to Step 3
31. Repair the power supply and the wiring to the
fuse F1.–––
41. Confirm the ignition switch ”OFF”.
2. Disconnect the connector of clock spring.
3. Disconnect the connector of passenger airbag
module.
4. Disconnect the connector of SDM.
5. Confirm the ignition switch ”ON”.
6. Check the voltage between the terminal 5 of
SDM connector and the ground. Is the voltage
10.6V?
10.6VGo to Step 7Go to Step 5
51. Disconnect the C207.
2. Confirm the ignition switch ”ON”.
3. Check the voltage from the terminal 3 of C207.
Is the voltage 10.6V?
10.6VGo to Step 4Go to Step 3
6Repair the wire between the fuse F1 and the terminal
1 of connector C207.–––
7Replace the SDM.–––

SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B – 49
DAEWOO V–121 BL4
DTC 25
Airbag Warning Lamp Failure
CAUTION : The sensing and diagnostic module(SDM)
can maintain sufficient voltage to deploy the airbags
and pretensioners for 1 minute after the ignition is
OFF and the fuse has been removed. If the airbags
and pretensioners are not disconnected, do not be-
gin service until one minute has passed after discon-
necting power to SDM. Otherwise, injury could result.
CAUTION : During service procedure, be very careful
when handling the SDM. Never strike or jar the SDM.Never power the supplemental inflatable re-
straints(SIR) when the SDM is not rigidly attached to
the vehicle. All SDM mounting bolts must be carefully
tightened , and the arrow on the SDM must be point
toward the front of the vehicle to ensure proper op-
eration of the SIR. The SDM could be activated if it is
powered when it is not rigidly attached to the vehicle,
resulting in unexpected deployment and possible in-
jury.
Step
ActionValue(s)YesNo
11. Confirm the ignition switch ”OFF”.
2. Wait for a minute the SDM charger to be dis-
charged.
3. Visually check any damage for the airbag wir-
ing. Is the airbag wiring damaged?–Replace the
airbag wiring.Go to Step 2
21. Check the resistance between the SDM and
the high, low terminal of driver side airbag
module and ground. Is the resistance 10KΩ–Go to Step 4Go to Step 3
3Repair the power supply and the wiring to the fuse
F4.–––
41. Confirm the ignition switch ”OFF”.
2. Remove the instrument cluster (or clock for
with tachometer).
3. Check the bulb of airbag warning lamp. Is the
bulb OK?–Go to Step 6Go to Step 5
5Replace the bulb of airbag warning lamp.–––
61. Confirm the ignition switch ”ON”.
2. Check the voltage from the terminal B15 from
the wiring connector of cluster.(or the terminal
A19 from the wiring connector of cluster). Is
the voltage in the range of 11~14V?
11~14VGo to Step 8Go to Step 7
7Repair the wire between the fuse F4 and the terminal
B15 from the wiring connector of cluster.(or the ter-
minal A19 from the wiring connector of cluster).–––
81. Check the connection between the terminal
B15 and B7 from the cluster(or the terminal
A19 and B7 from the cluster). Is the connection
OK?–Go to Step 10Go to Step 9
91. Replace the instrument cluster.–––
101. Confirm the ignition switch ”OFF”.
2. Remove the connector of passenger airbag
module and the connector of clock spring.
3. Remove the connector of SDM.
4. Confirm the ignition switch ”OFF”.
5. Check the voltage from the terminal 7 of SDM.
Is the voltage in the range of 11~14V?–Replace the
SDM.Go to Step 11
11Repair the wiring between the terminal 7 of SDM and
the instrument cluster.–––

8B – 50ISUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)
DAEWOO V–121 BL4
J3B18B03
LT BLU
LT BLU
”13” Ter.
DLC
(Data Link Connector) YEL YEL
10A
1C207 PNKPNKPNK
BLK/
WHTBRN
SDM F1
Hot in Run and Start
3
65
97 17
10A F4
32
B15
B7A19 31C201
G202
C207 4
DIAGNOSTIC TROUBLE CODE (DTC) 31
INTERNAL SENSING DIAGNOSTIC MODULE (SDM)
FAILURE
Circuit Description
When the ignition switch is turned to ON, the sensing and
diagnostic module(SDM) will perform turn–on test to diag-
nose critical malfunctions within SDM itself.DTC 31 Will Set When
S The SDM does not implement diagnostic operation.
In case of above, the wiring harness of SDM should
be checked before replacing the SDM.
DTC 31
Internal Sensing Diagnostic Module(SDM) Failure
CAUTION : The sensing and diagnostic module(SDM)
can maintain sufficient voltage to deploy the airbags
and pretensioners for 1 minute after the ignition is
OFF and the fuse has been removed. If the airbags
and pretensioners are not disconnected, do not be-
gin service until one minute has passed after discon-
necting power to SDM. Otherwise, injury could result.
CAUTION : During service procedure, be very carefulwhen handling the SDM. Never strike or jar the SDM.
Never power the supplemental inflatable re-
straints(SIR) when the SDM is not rigidly attached to
the vehicle. All SDM mounting bolts must be carefully
tightened , and the arrow on the SDM must be point
toward the front of the vehicle to ensure proper op-
eration of the SIR. The SDM could be activated if it is
powered when it is not rigidly attached to the vehicle,
resulting in unexpected deployment and possible in-
jury.

SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B – 51
DAEWOO V–121 BL4
J3B18B03
LT BLU
LT BLU
”13” Ter.
DLC
(Data Link Connector) YEL YEL
10A
1C207 PNKPNKPNK
BLK/
WHTBRN
SDM F1
Hot in Run and Start
3
65
97 17
10A F4
32
B15
B7A19 31C201
G202
C207 4
DIAGNOSTIC TROUBLE CODE (DTC) 32
AIRBAG INFLATION RECORD BY FRONTAL COLLISION
Circuit Description
When the ignition switch is turned to ON, the sensing and
diagnostic module(SDM) will perform turn–on test to diag-
nose critical malfunctions within SDM itself.
In case of airbag inflation by a vehicle collision, the SDMmaintains warning lamp ”ON” and then all the airbag sys-
tem including SDM, Airbag Module and wiring should be
replaced.
DTC 32 Will Set When
S The history of airbag inflation or belt pretensioner
explosion is in the SDM.
DTC 32
Airbag Inflation Record By Frontal Collision
CAUTION : The sensing and diagnostic module(SDM)
can maintain sufficient voltage to deploy the airbags
and pretensioners for 1 minute after the ignition is
OFF and the fuse has been removed. If the airbags
and pretensioners are not disconnected, do not be-
gin service until one minute has passed after discon-
necting power to SDM. Otherwise, injury could result.
CAUTION : During service procedure, be very carefulwhen handling the SDM. Never strike or jar the SDM.
Never power the supplemental inflatable re-
straints(SIR) when the SDM is not rigidly attached to
the vehicle. All SDM mounting bolts must be carefully
tightened , and the arrow on the SDM must be point
toward the front of the vehicle to ensure proper op-
eration of the SIR. The SDM could be activated if it is
powered when it is not rigidly attached to the vehicle,
resulting in unexpected deployment and possible in-
jury.