sensor DAEWOO LACETTI 2004 Service Repair Manual

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 .

8B – 60ISUPPLEMENTAL 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) 54
DRIVER SIDE AIRBAG DEPLOYMENT LOOP IS SHORTED
TO GROUND
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 54 Will Set When
S The side airbag wiring of driver’s high is shorted to
ground.
S The side airbag wiring of driver’s low is shorted to
ground.

8B – 62ISUPPLEMENTAL 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) 55
DRIVER SIDE AIRBAG DEPLOYMENT LOOP IS SHORTED
TO POWER
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 55 Will Set When
S The side airbag wiring of driver’s high is shorted to
battery wiring.
S The side airbag wiring of driver’s low is shorted to
battery wiring.

8B – 64ISUPPLEMENTAL 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) 56
PASSENGER 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 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 cir-
cuit and verify the resistance.
DTC 56 Will Set When
S The resistance of passenger side airbag deploy-
ment loop is over 2.8 ohms.

8B – 66ISUPPLEMENTAL 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) 57
PASSENGER SIDE AIRBAG DEPLOYENT 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
side airbag module by letting the infinitesimal current flow
through the internal circuit and verify the resistance.
DTC 57 Will Set When
S The resistance of driver side airbag deployment
loop is lower than 1.4 ohms.
S The shorting bar is damaged and then the SDM
must be replaced .

8B – 68ISUPPLEMENTAL 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) 58
PASSENGER SIDE AIRBAG DEPLOYMENT LOOP IS
SHORTED TO GROUND
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
side airbag module by letting the infinitesimal current flow
through the internal circuit and verify the resistance.
DTC 58 Will Set When
S The side airbag wiring of passenger’s high is
shorted to ground.
S The side airbag wiring of passenger’s low is shorted
to ground.

8B – 70ISUPPLEMENTAL 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) 59
PASSENGER SIDE AIRBAG DEPLOYMENT LOOP IS
SHORTED TO POWER
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 59 Will Set When
S The side airbag wiring of passenger’s high is
shorted to battery wiring.
S The side airbag wiring of passenger’s low is shorted
to battery wiring.