Page 2185 of 2643

SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B – 81
DAEWOO V–121 BL4
DTC 84 Passenger Side Airbag Sensor 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 the SDM charger to be dis-
charged.
3. Visually check any damage for the passenger
side airbag sensor wiring and the connector.
Are the airbag wiring and connector damaged?–Go to Step 3Go to Step 2
2Repair and reconnect the circuit. Check the circuit
again.–––
3Check the resistance between the SDM and the
high, low terminal of passenger side airbag sensor
and the battery. Is the resistance 10KΩ? 10K ΩGo to Step 5Go to Step 4
4Replace the airbag wiring.–––
51. Replace the SDM.
2. Confirm the ignition switch ”ON”.
3. Remove the DTC with scan tool.
4. Check the circuit. Is the DTC still exist?–Go to Step 6The system is
OK.
6Replace the passenger side airbag sensor.–––
Page 2186 of 2643

8B – 82ISUPPLEMENTAL 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) 85
PASSENGER SIDE AIRBAG SENSOR 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 84 Will Set When
S The side airbag sensor wiring of passenger’s high
is shorted to ground.
S The side airbag sensor wiring of passenger’s low is
shorted to ground.
Page 2187 of 2643

SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B – 83
DAEWOO V–121 BL4
DTC 85 Passenger Side Airbag Sensor 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 the SDM charger to be dis-
charged.
3. Visually check any damage for the passenger
side airbag sensor wiring and the connector.
Are the airbag wiring and connector damaged
OK?–Go to Step 3Go to Step 2
2Replace the airbag wiring and connect the connec-
tor.–––
3Check the resistance between the SDM and the
high, low terminal of passenger side airbag sensor
and the ground. Is the resistance 10KΩ? 10K ΩGo to Step 4Go to Step 6
41. Replace the SDM.
2. Confirm the ignition switch ”ON”.
3. Remove the DTC with scan tool.
4. Check the circuit. Is the DTC still exist?–Go to Step 5The system is
OK.
5Replace the passenger side airbag sensor.–––
6Replace the airbag wiring.–––
Page 2188 of 2643
8B – 84ISUPPLEMENTAL 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) 86
PASSENGER SIDE AIRBAG SENSOR COMMUNICATION
ERROR
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 86 Will Set When
S a communication error occurs between the SDM
and the passenger side airbag sensor.
Page 2189 of 2643

SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B – 85
DAEWOO V–121 BL4
DTC 86 Passenger Side Airbag Sensor Communication Error
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 passenger
side airbag sensor wiring and the connector.
Are the airbag wiring and connector OK?–Go to Step 3Go to Step 2
2Replace the airbag wiring and connect the connec-
tor.–––
31. Replace the passenger side airbag sensor.
2. Confirm the ignition switch ”ON”.
3. Remove the DTC with scan tool.
4. Check the circuit. Is the DTC still exist?–Go to Step 4The system is
OK.
4Replace the SDM.–––
Page 2190 of 2643
8B – 86ISUPPLEMENTAL 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) 87
PASSENGER SIDE AIRBAG SENSOR 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.
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 87 Will Set When
S The the passenger side airbag sensor is inopera-
tive.
Page 2191 of 2643

SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B – 87
DAEWOO V–121 BL4
DTC 87 Passenger Side Airbag Sensor 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 passenger
side airbag sensor wiring and the connector.
Are the airbag wiring and connector OK?–Go to Step 3Go to Step 2
2Replace the airbag wiring and connect the connec-
tor.–––
3Replace the passenger side airbag sensor.–––
Page 2192 of 2643

8B – 88ISUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)
DAEWOO V–121 BL4
MAINTENANCE AND REPAIR
ON–VEHICLE SERVICE
SERVICE PRECAUTION
CAUTION : The sensing and diagnostic mod-
ule(SDM) can maintain sufficient voltage to
deploy the airbags and pretensioners for 1 min-
ute after the ignition is OFF and the fuse has been
removed. If the airbags and pretensioners are not
disconnected, do not begin service until one
minute has passed after disconnecting power to
SDM. If the airbags are disconnected, service can
be excuted immediately without waiting for one–
minute time period to expire. Failure to tempo-
rarily disable the SIR during service can result in
unexpected deployment, personal injury and un-
necessary SIR repairs.
DISABLING THE SUPPLEMENTAL
INFLATABLE RESTRAINTS(SIR)
1. Turn the steering wheel to the straight–ahead posi-
tion.
2. Turn the ignition switch to LOCK and remove the
key.
3. Remove the airbag fuse F1 in the I/P fuse block
and wait more than one minute for SIR capacitor to
discharge.
ENABLING THE SUPPLEMENTAL
INFLATABLE RESTRAINTS(SIR)
1. Insert the airbag fuse F8 in the I/P fuse block.
2. Turn the ignition switch to ON and verify that the
airbag indicator flashes seven times and turns OFF.
If it does not operate as described, perform the”
SIR Diagnostic System Check” referring in this sec-
tion.
CAUTION : While turning the ignition switch,
staying well away from the inflator modules, or
personal injury can be occurred.