2004 DAEWOO NUBIRA belt

SEAT BELTS 8A – 9
DAEWOO V–121 BL4
GENERAL DESCRIPTION
AND SYSTEM OPERATION
DRIVER SEAT BELT WARNING
The driver’s safety belt incorporates a safety belt reminder
light in the instrument cluster to remind the driver if the
safety belt is not fastened when the the ignition is turned
ON.
THREE–POINT ELR FRONT SEAT
BELT WITH PRETENSIONER
The three–point emergency locking retractor (ELR) front
seat belt pretensioner is always unlocked, allowing the
passenger freedom of movement, except in emergencies
such as rapid deceleration, rapid acceleration, or hard cor-
nering maneuvers.
The front seat belt pretensioner contains an ignitor charge
and a gas generator to inflate the pretensioner. The pre-
tensioner also includes wiring and a connector. The con-
nector of the pretensioner contains a shorting bar which
short–circuits the pretensioner high circuit to the preten-
sioner low circuit when the connector is disconnected. The
shorting bar prevents current from traveling through the
pretensioner during servicing. The shorting bar disen-
gaged when the connecotr is connected.
The pretensioner is an electronically controlled pyrotech-
nical reactor which reduce seat belt slack when it is actived
with air bags.
The front seat belt pretensioner must be replaced after an
accident that cause its activation.
THREE–POINT CLR (ELR) REAR
OUTBOARD SEAT BELT
The rear outboard seating positions use the three–point
child locking retractor (CLR) or emergency locking retrac-
tor (ELR) seat belts. The three–point CLR (ELR) seat beltis always unlocked, allowing the passenger freedom of
movement, except in emergencies such as rapid decel-
eration, rapid acceleration, or hard cornering maneuvers.
OPERATIONAL AND FUNCTIONAL
CHECKS
CAUTION :
S Keep sharp objects and potentially damaging
objects away from the seat belts.
S Avoid bending or damaging any portion of the
buckle or the latch plate.
S Do not bleach or dye the belt webbing. Use
only mild soap and water in order to clean the
belts.
S When installing the seat belt anchor bolts and
the screws, start the bolts and the screws by
hand in order to prevent cross–threading.
S Do not attempt any repairs on the retractor
mechanisms or the covers. Replace any defec-
tive assemblies with new assemblies.
S Replace any belts that are cut or damaged in
any way.
1. Inspect all seat belt anchor bolts and the screws in
order to verify that they are secure.
2. Inspect the seat belt buckle. The buckle must lock
and unlock easily.
3. After inserting the latch into the buckle, tug sharply
on the belt. The buckle must remain locked.
4. Fully extend the shoulder belt portion to make sure
that there is no twisting or tears in the belt.
5. Let the shoulder belt retract fully. The belt should
retract easily.
CHILD SEAT TETHER ANCHOR
For notch back vehicle, there are three child seat tether
anchors located on the read deck lid sill plate. For hatch
back vehicle, there are three child seat fether anchors on
the lower rear tail member in the luggage compartment.
And there are 4 lower child anchors under the rear seat.
4 circular discs on the rear seat indicate the location of the
lower child anchors.

SECTION : 8B
SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)
CAUTION : Disconnect the negative battery cable before removing or installing any electrical unit or when a tool
or equipment could easily come in contact with exposed electrical terminals. Disconnecting this cable will help
prevent personal injury and damage to the vehicle. The ignition mujst be also be in LOCK unless otherwise noted
TABLE OF CONTENTS
SPECIFICATIONS8B–3 . . . . . . . . . . . . . . . . . . . . . . . . . .
General Specifications 8B–3. . . . . . . . . . . . . . . . . . . . .
Fastener Tightening Specifications 8B–3. . . . . . . . . . .
SPECIAL TOOLS8B–3 . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPECIAL TOOLS TABLE 8B–3. . . . . . . . . . . . . . . . . . .
SCHEMATIC AND ROUTING DIAGRAMS8B–4 . . . . .
Supplemental Inflatable Restraints(SIR)
Electronical Schematic 8B–4. . . . . . . . . . . . . . . . . . . .
SIR Component Locator 8B–5. . . . . . . . . . . . . . . . . . . .
DIAGNOSIS8B–6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Trouble Code (DTC) 8B–6. . . . . . . . . . . . . .
Scan Tool Diagnostics 8B–7. . . . . . . . . . . . . . . . . . . . . .
SIR Diagnostic System Check 8B–8. . . . . . . . . . . . . . .
Sensing and Diagnostic Module (SDM) Integrity
check 8B–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC 1 Driver Airbag Deployment Loop Resistance
Is High 8B–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC 2 Driver Airbag Deployment Loop Resistance
Is Low 8B–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC 3 Driver Airbag Deployment Loop Is Shorted
To Ground 8B–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC 4 Driver Airbag Deployment Loop Is Shorted
To Power 8B–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC 5 Passenger Airbag Deployment Loop
Resistance Is High 8B–20. . . . . . . . . . . . . . . . . . . . . .
DTC 6 Passenger Airbag Deployment Loop
Resistance Is Low 8B–22. . . . . . . . . . . . . . . . . . . . . .
DTC 7 Passenger Airbag Deployment Loop Is
Shorted To Ground 8B–24. . . . . . . . . . . . . . . . . . . . . .
DTC 8 Passenger Airbag Deployment Loop Is
Shorted To Power 8B–26. . . . . . . . . . . . . . . . . . . . . . .
DTC 9 Driver Belt Pretensioner Deployment
Loop Resistance Is High 8B–28. . . . . . . . . . . . . . . . .
DTC 10 Driver Belt Pretensioner Deployment
Loop Resistance Is Low 8B–30. . . . . . . . . . . . . . . . . .
DTC 11 Driver Belt Pretensioner Deployment
Loop Is Shorted To Ground 8B–32. . . . . . . . . . . . . . . DTC 12 Driver Belt Pretensioner Deployment
Loop Is Shorted To Power 8B–34. . . . . . . . . . . . . . . .
DTC 13 Passenger Belt Pretensioner Deployment
Loop Resistance Is High 8B–36. . . . . . . . . . . . . . . . .
DTC 14 Passenger Belt Pretensioner Deployment
Loop Resistance Is Low 8B–38. . . . . . . . . . . . . . . . . .
DTC 15 Passenger Belt Pretensioner Deployment
Loop Is Shorted To Ground 8B–40. . . . . . . . . . . . . . .
DTC 16 Passenger Belt Pretensioner Deployment
Loop Is Shorted To Power 8B–42. . . . . . . . . . . . . . . .
DTC 23 Battery Voltage high 8B–44. . . . . . . . . . . . . . .
DTC 24 Battery Voltage Low 8B–46. . . . . . . . . . . . . . .
DTC 25 Airbag Warning Lamp Failure 8B–48. . . . . . .
DTC 31 Internal Sensing Diagnostic Module
(SDM) Failure 8B–50. . . . . . . . . . . . . . . . . . . . . . . . . .
DTC 32 Airbag Inflation Record By Frontal
Collision 8B–51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC 33 Driver Side Airbag Inflation Record By
Side Impact 8B–52. . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC 34 Passenger Side Airbag Inflation Record
By Side Impact 8B–53. . . . . . . . . . . . . . . . . . . . . . . . .
DTC 35 Belt Pretensioner Explosion Record 8B–54. .
DTC 38 Side Airbag And Belt Pretensioner
Explosion Count Over 5 8B–55. . . . . . . . . . . . . . . . . .
DTC 52 Driver Side Airbag Deployment Loop
Resistance Is High 8B–56. . . . . . . . . . . . . . . . . . . . . .
DTC 53 Driver Side Airbag Deployment Loop
Resistance Is Low 8B–58. . . . . . . . . . . . . . . . . . . . . .
DTC 54 Driver Side Airbag Deployment Loop Is
Shorted To Ground 8B–60. . . . . . . . . . . . . . . . . . . . . .
DTC 55 Driver Side Airbag Deployment Loop Is
Shorted To Power 8B–62. . . . . . . . . . . . . . . . . . . . . . .
DTC 56 Passenger Side Airbag Deployment Loop
Resistance Is High 8B–64. . . . . . . . . . . . . . . . . . . . . .
DTC 57 Passenger Side Airbag Deployment Loop
Resistance Is Low 8B–66. . . . . . . . . . . . . . . . . . . . . .
DTC 58 Passenger Side Airbag Deployment Loop
Is Shorted To Ground 8B–68. . . . . . . . . . . . . . . . . . . .
DTC 59 Passenger Side Airbag Deployment Loop
Is Shorted To Power 8B–70. . . . . . . . . . . . . . . . . . . . .

8B – 2ISUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)
DAEWOO V–121 BL4
DTC 80 Driver Side Airbag Sensor Loop Is
Shorted To Power 8B–72. . . . . . . . . . . . . . . . . . . . . . .
DTC 81 Driver Side Airbag Sensor Loop Is
Shorted To Ground 8B–74. . . . . . . . . . . . . . . . . . . . . .
DTC 82 Driver Side Airbag Sensor Communication
Error 8B–76. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC 83 Driver Side Airbag Sensor Failure 8B–78. . .
DTC 84 Passenger Side Airbag Sensor Loop Is
Shorted To Power 8B–80. . . . . . . . . . . . . . . . . . . . . . .
DTC 85 Passenger Side Airbag Sensor Loop Is
Shorted To Ground 8B–82. . . . . . . . . . . . . . . . . . . . . .
DTC 86 Passenger Side Airbag Sensor
Communication Error 8B–84. . . . . . . . . . . . . . . . . . . .
DTC 87 Passenger Side Airbag Sensor Failure 8B–86
MAINTENANCE AND REPAIR8B–88 . . . . . . . . . . . . . .
ON–VEHICLE SERVICE 8B–88. . . . . . . . . . . . . . . . . . . .
Disabling the Supplemental Inflatable
Restraints(SIR) 8B–88. . . . . . . . . . . . . . . . . . . . . . . . .
Enabling the Supplemental Inflatable
Restraints(SIR) 8B–88. . . . . . . . . . . . . . . . . . . . . . . . .
Handling, Installation and Diagnosis 8B–89. . . . . . . . .
Repairs and Inspections Required After an
Accident 8B–89. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accident With Deployment Components
Replacements 8B–90. . . . . . . . . . . . . . . . . . . . . . . . . . Accident Without Deployment Component
Inspection 8B–90. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sensing and Diagnostic Module (SDM) 8B–90. . . . . .
Driver Airbag Module 8B–91. . . . . . . . . . . . . . . . . . . . . .
Clock Spring 8B–92. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clock Spring Alignment 8B–93. . . . . . . . . . . . . . . . . . . .
Passenger Airbag Module 8B–94. . . . . . . . . . . . . . . . . .
Side Airbag Sensor 8B–95. . . . . . . . . . . . . . . . . . . . . . .
Front Seat Belt Pretensioner 8B–95. . . . . . . . . . . . . . .
Airbag Module Deployment (Inside of Vehicle) 8B–95
Airbag Module Deployment (Outside of Vehicle) 8B–97
Deployed Airbag Module Disposal Procedure 8B–98.
SIR Wiring Repair 8B–99. . . . . . . . . . . . . . . . . . . . . . . .
GENERAL DESCRIPTION AND SYSTEM
OPERATION8B–100 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supplemental Inflatable Restraints(SIR) 8B–100. . . .
Airbag Modules 8B–100. . . . . . . . . . . . . . . . . . . . . . . . . .
Front Seat Belt Pretensioners 8B–101. . . . . . . . . . . . .
Sensing and Diagnostic Module (SDM) 8B–101. . . . .
Airbag Warning Lamp 8B–101. . . . . . . . . . . . . . . . . . . .
Clock Spring 8B–101. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wiring Harness Connectors 8B–102. . . . . . . . . . . . . . .

8B – 6ISUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)
DAEWOO V–121 BL4
DIAGNOSIS
DIAGNOSTIC TROUBLE CODE (DTC)
When the sensing and diagnostic module (SDM) detects
any problem it illuminates the airbag warning indicator and
stores the diagnostic trouble codes (DTCs).
The supplemental inflatable restraints (SIR) diagnostic
system check must be always the starting point for any
SIR diagnosis. The diagnostic system check reveals diag-
nostic trouble codes (DTCs) through the use of scan tool.
It also checks for proper airbag warning lamp operation.
The two types of DTCs that may be recorded are as fol-lows :
1. Active DTCs represent malfunction being detected
during the current ignition cycle. Active DTCs are
stored in random access memory (RAM).
2. Historic DTCs represent malfunctions detected sin-
cethe last time the historic memory was cleared.
Historic DTCs are stored in the electrically erasable
programmable read–only memory (EPROM).
Diagnostic Trouble Code Table
DTCDescription
1Driver Airbag Deployment Loop Resistance Is High
2Driver Airbag Deployment Loop Resistance Is Low
3Driver Airbag Deployment Loop Is Shorted To Ground
4Driver Airbag Deployment Loop Is Shorted To Power
5Passenger Airbag Deployment Loop Resistance Is High
6Passenger Airbag Deployment Loop Resistance Is Low
7Passenger Airbag Deployment Loop Is Shorted To Ground
8 Passenger Airbag Deployment Loop Is Shorted To Power
9Driver Belt Pretensioner Deployment Loop Resistance Is High
10Driver Belt Pretensioner Deployment Loop Resistance Is Low
11Driver Belt Pretensioner Deployment Loop Is Shorted To Ground
12 Driver Belt Pretensioner Deployment Loop Is Shorted To Power
13Passenger Belt Pretensioner Deployment Loop Resistance Is High
14Passenger Belt Pretensioner Deployment Loop Resistance Is Low
15Passenger Belt Pretensioner Deployment Loop Is Shorted To Ground
16Passenger Belt Pretensioner Deployment Loop Is Shorted To Power
23Battery Voltage High
24 Battery Voltage Low
25 Airbag Warning Lamp Failure
31Internal Sensing Diagnostic Module(SDM) Failure
32 Airbag Inflation Record By Frontal Collision
33 Driver Side Airbag Inflation Record By Side Impact
34Passenger Side Airbag Inflation Record By Side Impact
35Belt Pretensioner Explosion Record
38Side Airbag And Belt Pretensioner Explosion Count Over 5
52 Driver Side Airbag Deployment Loop Resistance Is High
53Driver Side Airbag Deployment Loop Resistance Is Low
54Driver Side Airbag Deployment Loop Is Shorted To Ground
55 Driver Side Airbag Deployment Loop Is Shorted To Power
56Passenger Side Airbag Deployment Loop Resistance Is High

SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B – 23
DAEWOO V–121 BL4
DTC 6
Passenger 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 belt pretensioner. Is the wiring damaged?–Replace the
wiring.Go to Step 3
31. Confirm the ignition switch ”OFF”.
2. Disconnect the connector of driver belt preten-
sioner.
3. Disconnect the connector of SDM wiring.
4. Check the resistance between the terminal 1
and 2 of driver belt pretensioner. Is the resist-
ance ?ΩGo 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
passenger airbag module.–––
5Replace the airbag wiring.–––

8B – 28ISUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)
DAEWOO V–121 BL4
J3B18B05
341 2
SDM Driver
Pretensioner
ModulePassenger
Pretensioner
Module
PNKPNK/
DK BLUDK BLU/
WHT BLK/WHT PPL YEL/
DK BLUDK BLU/
WHTRED/
BLK
DK
BLU
G202 C301
126 1
2
38 76
DIAGNOSTIC TROUBLE CODE (DTC) 9
DRIVER BELT PRETENSIONER DEPLOYMENT LOOP
RESISTANCE IS HIGH
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.
Upon passing these test ignition and deployment loop volt-
ages are measured to ensure that they are within their nor-
mal voltage ranges. The SDM monitors the voltages at thedriver low and the passenger low to detect shorts to
ground or voltage in the deploy loops.
The SDM checks the wiring connection to the passenger
airbag module by letting the infinitesimal current flow
through the internal circuit and verify the resistance.
DTC 9 Will Set When
S The resistance of driver belt pretensioner deploy
loop is over 3.1 ohms.

SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B – 29
DAEWOO V–121 BL4
DTC 9
Driver 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.
5. If the DTC is not removable, then replace the
driver belt pretensioner.–––

8B – 30ISUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)
DAEWOO V–121 BL4
J3B18B05
341 2
SDM Driver
Pretensioner
ModulePassenger
Pretensioner
Module
PNKPNK/
DK BLUDK BLU/
WHT BLK/WHT PPL YEL/
DK BLUDK BLU/
WHTRED/
BLK
DK
BLU
G202 C301
126 1
2
38 76
DIAGNOSTIC TROUBLE CODE (DTC) 10
DRIVER BELT PRETENSIONER DEPLOYMENT LOOP
RESISTANCE IS LOW
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.
Upon passing these test ignition and deployment loop volt-
ages are measured to ensure that they are within their nor-
mal voltage ranges. The SDM monitors the voltages at the
driver low and the passenger low to detect shorts to
ground or voltage in the deploy loops.The SDM checks the wiring connection to the passenger
airbag module by letting the infinitesimal current flow
through the internal circuit and verify the resistance.
DTC 10 Will Set When
S The resistance of driver belt pretensioner deploy
loop is lower than 1.5 ohms.
S The shorting bar is damaged and then the SDM
must be replaced .