2004 DAEWOO LACETTI sensor

7D – 38IAUTOMATIC TEMPERATURE CONTROL HEATING, VENTILATION, AND AIR CONDITIONING SYSTEM
DAEWOO V–121 BL4
Installation Procedure
1. Connect the electrical connector.
2. Insert and press the sun sensor into position in the
dash.
3. Connect the negative battery cable.

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. . . . . . . . . . . . . . .

SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B – 5
DAEWOO V–121 BL4
SIR COMPONENT LOCATOR
1. Driver Airbag Module
2. Clock Spring
3. Sensing And Diagnostic Module(SDM)4. Passenger Airbag Module
5. Side Airbag Module
6. Side Airbag Sensor

SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B – 7
DAEWOO V–121 BL4
DTC Description
57Passenger Side Airbag Deployment Loop Resistance Is Low
58Passenger Side Airbag Deployment Loop Is Shorted To Ground
59Passenger Airbag Deployment Loop Is Shorted To Power
80Driver Side Airbag Sensor Loop Is Shorted To Power
81Driver Side Airbag Sensor Loop Is Shorted To Ground
82Driver Side Airbag Sensor Communication Error
83Driver Side Airbag Sensor Failure
84Passenger Side Airbag Sensor Loop Is Shorted To Power
85Passenger Side Airbag Sensor Loop Is Shorted To Ground
86Passenger Side Airbag Sensor Communication Error
87Passenger Side Airbag Sensor Failure
SCAN TOOL DIAGNOSTICS
A scan tool can read serial data from terminal 13 of the
data link connector(DLC). The scan tool is used to read
diagnostic trouble codes(DTCs), and to clear some DTCs
after a repair is completed. By design, DTC 51 can not becleared. And the DTC 61 can not be cleared for the ignition
cycle once the DTC has been detected by the SDM.
To use the scan tool, turn the ignition OFF, connect the
scan tool to the DLC, and turn the ignition switch to ON.
Follow the instructions in the scan tool manual. The SDM
sends serial data from terminal 9 of the SDM to terminal
13 of the DLC.

8B – 52ISUPPLEMENTAL 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) 33
DRIVER SIDE AIRBAG INFLATION RECORD BY SIDE
IMPACT
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 driver side airbag inflation by side impact, the
SDM maintains warning lamp”ON” and then all the airbag
system should be checked including pretensioners andalso side airbag sensor, wiring should be replaced. In
case, the driver side airbag inflation by side impact counts
over 5, the SDM should also be replaced.
DTC 33 Will Set When
S The history of airbag inflation or belt pretensioner
explosion is in the SDM.
DTC 33
Driver Side Airbag Inflation Record By Side Impact
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 – 53
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) 34
PASSENGER SIDE AIRBAG INFLATION RECORD BY
SIDE IMPACT
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 passenger side airbag inflation by side impact,
the SDM maintains warning lamp ”ON” and then all the air-
bag system should be checked including pretensionersand also side airbag sensor, wiring should be replaced. In
case, the passenger side airbag inflation by side impact
counts over 5, the SDM should also be replaced.
DTC 34 Will Set When
S The history of passenger side airbag inflation or belt
pretensioner explosion is in the SDM.
DTC 34
Passenger Side Airbag Inflation Record By Side Impact
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.

8B – 56ISUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)
DAEWOO V–121 BL4
J3B18B07
18191 2
SDM Driver
Side Airbag
ModulePassenger
Side Airbag
Module
WHT/
YEL
BLK/
WHTPNK/
WHTBRN/
WHT BLKDK GRN/
YEL
RED/
YEL WHT/
DK BLU DK GRN/
DK BLU
6
G202
20
1 1
2425C301
16
45
17
Driver
Side Airbag
Sensor12
21
1 246
Passenger
Side Airbag
Sensor
DIAGNOSTIC TROUBLE CODE (DTC) 52
DRIVER SIDE AIRBAG 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 the
driver low and the passenger low to detect shorts to
ground or voltage in the deploy loops.
DTC 52 Will Set When
S The resistance of driver side airbag deployment
loop is higher than 2.7 ohms.

8B – 58ISUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)
DAEWOO V–121 BL4
J3B18B07
18191 2
SDM Driver
Side Airbag
ModulePassenger
Side Airbag
Module
WHT/
YEL
BLK/
WHTPNK/
WHTBRN/
WHT BLKDK GRN/
YEL
RED/
YEL WHT/
DK BLU DK GRN/
DK BLU
6
G202
20
1 1
2425C301
16
45
17
Driver
Side Airbag
Sensor12
21
1 246
Passenger
Side Airbag
Sensor
DIAGNOSTIC TROUBLE CODE (DTC) 53
DRIVER SIDE AIRBAG 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.
DTC 53 Will Set When
S The resistance of driver airbag deployment loop is
lower than 1.4 ohms.
S The shorting bar is damaged and then the SDM
must be replaced .