2004 DAEWOO NUBIRA Service Repair Manual

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Page 2113 of 2643

DAEWOO NUBIRA 2004 Service Repair Manual SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B – 9
DAEWOO V–121 BL4
StepNo Yes Value(s) Action
61. Disconnect the connector from the SDM.2.
Check the wiring shortage between the termi-
nal5 of the

Page 2114 of 2643

DAEWOO NUBIRA 2004 Service Repair Manual 8B – 10ISUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)
DAEWOO V–121 BL4
SENSING AND DIAGNOSTIC MODULE (SDM) INTEGRITY
CHECK
The following diagnostic chart must be used when all cir-
cuitry outside the s

8B – 10ISUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)
DAEWOO V–121 BL4
SENSING AND DIAGNOSTIC MODULE (SDM) INTEGRITY
CHECK
The following diagnostic chart must be used when all cir-
cuitry outside the sensing and diagnostic module (SDM)
has been found to operate properly, as indicated by follow-
ing the appropriate diagnostic trouble code(DTC) chart.
The chart verifies the need for SDM replacement.
Circuit Description
When the SDM recognizes ignition voltage greater than 9
volts at terminal A1 of the SDM, the airbag indicator
flashes seven times to verify operation. At this time the
SDM performs turn–on tests followed by resistance mea-surement tests and continuous monitoring tests.
When malfunction is detected, the SDM sets current DTC
and illuminates the airbag indicator.
When the malfuncation is no longer detected and/or the
ignition switch is cycled, the SDM will clear current DTCs
and move them to a history file, except for the DTCs 51
and sometimes 71. DTCs 51 will not be cleared by scan
tool because these codes require replacement of SDM.
The SDM must be replaced only after the malfunction that
set the DTC has been repaired.
Sensing and Diagnostic Module (SDM) Integrity Check
CAUTION : The sensing and diagnostic module
(SDM) can maimtain sufficient voltage to deploy the
airbags and pretensioners for 1 minute after the igni-
tion is OFF and the fuse has been removed. If the air-
bags and pretensioners are not disconnected, do not
begin service until one minute has passed after dis-
connecting the power to the 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 rigidlyattached to
the vehile. 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. Turn the ignition to LOCK and remove the key
2. Connect all SIR components and ensure that
all the components are properly mounted.
3. Ensure that the ignition switch has been OFF
for at least 30 seconds.
4. Observe the airbag indicator as the ignition is
turned ON. Does the indicator lamp flashes
seven times ?–Clear the SIR
DTCs and
go to
”Diagnostic
System Check”Go to Step 2
21. Turn the ignition to LOCK and remove the key.
2. Connect the scan tool to DLC. Follow the direc-
tions given in the scan tool manual.
3. Turn the ignition to ON.
4. Request SIR DTC display with the scan tool. Is
the same DTC displayed that was previous oc-
curred when the SIR Diagnostic System Check
was previously performed?–Go to Step 3.Go to the table
for the DTC in-
dicated.
31. Clear SIR DTCs.
2. Turn the ignition OFF for at least 30 seconds.
3. Observe the airbag indicator as the ignition is
turned ON. Does the indicator lamp flashes
seven times ?–System OKGo to Step4
41. Turn the ignition to LOCK and remove the key.
2. Disconnect the SDM connector.
3. Replace the SDM.
4. Connect the SDM connector and ensure that
all components are properly mounted. Is the
repair complete?–Go to
”Diagnostic
System Check”–

Page 2115 of 2643

DAEWOO NUBIRA 2004 Service Repair Manual SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B – 11
DAEWOO V–121 BL4
Hot In Run and Start
J3B18B03
LT BLU
LT BLU
”13” Ter.
DLC
(Data Link Connector) YEL YEL
10A
1C207 PNKPNKPNK
BLK/
WHTBRN
SDM F

Page 2116 of 2643

DAEWOO NUBIRA 2004 Service Repair Manual 8B – 12ISUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)
DAEWOO V–121 BL4
J3B18B04
1 2
21
SDM Driver Airbag Module
Clock SpringDK GRN/
WHT
BLK/WHT
G202
10 11146
Passenger Airbag Module
BRN
BRNDK BLU
WHT/

Page 2117 of 2643

DAEWOO NUBIRA 2004 Service Repair Manual SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B – 13
DAEWOO V–121 BL4
DTC 1 Driver Airbag Deployment Loop Resistance Is High
CAUTION : The sensing and diagnostic module(SDM)
can maintain sufficient

SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B – 13
DAEWOO V–121 BL4
DTC 1 Driver Airbag 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
1Perform the SIR Diagnostic System Check.
Is the SIR Diagnostic System Check completed?–Go to Step 2–
2Visually inspect the connector and the wiring of driv-
er airbag. Is the connector disconnected?–Connect the
connector and
go to Step 1Go to Step 3
31. Confirm the ignition switch ”OFF”.
2. Remove the driver airbag module.
3. Disconnect the connector of SDM wiring.
4. Check the resistance between the terminal
10,11 of SDM and the terminal 1,2 of driver
airbag module. Is the resistance about 0(zero)
? 0 WGo to Step 4Go to Step 5
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 airbag module.–––
51. Remove the connector from the clock spring
wiring.
2. Check the resistance between the terminal
10,11 of SDM and the terminal 1,2 of clock
spring. Is the resistance about 0(zero) ? 0 WGo to Step 6Go to Step 7
61. Replace the clock spring–––
71. Replace the airbag wiring.–––

Page 2118 of 2643

DAEWOO NUBIRA 2004 Service Repair Manual 8B – 14ISUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)
DAEWOO V–121 BL4
J3B18B04
1 2
21
SDM Driver Airbag Module
Clock SpringDK GRN/
WHT
BLK/WHT
G202
10 11146
Passenger Airbag Module
BRN
BRNDK BLU
WHT/

Page 2119 of 2643

DAEWOO NUBIRA 2004 Service Repair Manual SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B – 15
DAEWOO V–121 BL4
DTC 2 Driver Airbag Deployment Loop Resistance Is Low
CAUTION : The sensing and diagnostic module(SDM)
can maintain sufficient

SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B – 15
DAEWOO V–121 BL4
DTC 2 Driver Airbag 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
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 driv-
er airbag. Is the airbag wiring damaged?–Replace the
airbag wiring.Go to Step 5
31. Confirm the ignition switch ”OFF”.
2. Remove the driver airbag module.
3. Check the resistance between the terminal 1
and 2 of driver airbag module. Is the resistance
in the specification range?
4. Erase the current DTCs with the scan tool.–Go to Step 4Go to Step 5
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 airbag module.–––
51. Remove the connector from the clock spring
wiring.
2. Check the resistance between the terminal 1
and 2 of clock spring. Is the resistance ?Replace the
airbag wiring.Replace the
clock spring.

Page 2120 of 2643

DAEWOO NUBIRA 2004 Service Repair Manual 8B – 16ISUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)
DAEWOO V–121 BL4
J3B18B04
1 2
21
SDM Driver Airbag Module
Clock SpringDK GRN/
WHT
BLK/WHT
G202
10 11146
Passenger Airbag Module
BRN
BRNDK BLU
WHT/

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