2004 DAEWOO LACETTI bulb

SEAT BELTS 8A – 3
DAEWOO V–121 BL4
DIAGNOSIS
DRIVER SEAT BELT WARNING
Seat Belt Warning Lamp Does Not Turn On at Any Time
StepActionValue(s)YesNo
1Check the seat belt warning fuse F4.
Is fuse F4 blown?–Go to Step 2Go to Step 3
21. Check for a short circuit and repair if neces-
sary.
2. Replace the fuse.
Is the repair complete?–System OK–
31. Turn the ignition ON.
2. Check the voltage at fuse F4.
Is the voltage equal to the specified value?11–14 vGo to Step 5Go to Step 4
4Repair the open power supply circuit for fuse F4.
Is the repair complete?–System OK–
51. Disconnect the seat belt switch connector (lo-
cated under the driver’s seat).
2. Connect a jumper between the terminals on the
harness side of the seat belt switch connector.
3. Turn the ignition ON.
Does the seat belt warning lamp turn on?–Go to Step 6Go to Step 7
6Replace the seat belt switch.
Is the repair complete?–System OK–
71. Remove the instrument cluster.
2. Check the seat belt warning lamp bulb.
Is the bulb OK?–Go to Step 9Go to Step 8
8Replace the warning lamp bulb.
Is the repair complete?–System OK–
9Repair the open circuit between instrument cluster
terminal A11 and ground.
Is the repair complete?–System OK–

SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B – 49
DAEWOO V–121 BL4
DTC 25
Airbag Warning Lamp 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 airbag wir-
ing. Is the airbag wiring damaged?–Replace the
airbag wiring.Go to Step 2
21. Check the resistance between the SDM and
the high, low terminal of driver side airbag
module and ground. Is the resistance 10KΩ–Go to Step 4Go to Step 3
3Repair the power supply and the wiring to the fuse
F4.–––
41. Confirm the ignition switch ”OFF”.
2. Remove the instrument cluster (or clock for
with tachometer).
3. Check the bulb of airbag warning lamp. Is the
bulb OK?–Go to Step 6Go to Step 5
5Replace the bulb of airbag warning lamp.–––
61. Confirm the ignition switch ”ON”.
2. Check the voltage from the terminal B15 from
the wiring connector of cluster.(or the terminal
A19 from the wiring connector of cluster). Is
the voltage in the range of 11~14V?
11~14VGo to Step 8Go to Step 7
7Repair the wire between the fuse F4 and the terminal
B15 from the wiring connector of cluster.(or the ter-
minal A19 from the wiring connector of cluster).–––
81. Check the connection between the terminal
B15 and B7 from the cluster(or the terminal
A19 and B7 from the cluster). Is the connection
OK?–Go to Step 10Go to Step 9
91. Replace the instrument cluster.–––
101. Confirm the ignition switch ”OFF”.
2. Remove the connector of passenger airbag
module and the connector of clock spring.
3. Remove the connector of SDM.
4. Confirm the ignition switch ”OFF”.
5. Check the voltage from the terminal 7 of SDM.
Is the voltage in the range of 11~14V?–Replace the
SDM.Go to Step 11
11Repair the wiring between the terminal 7 of SDM and
the instrument cluster.–––

SECTION : 9B
LIGHTING SYSTEMS
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 must also be in LOCK unless otherwise noted.
TABLE OF CONTENTS
SPECIFICATIONS9B–2 . . . . . . . . . . . . . . . . . . . . . . . . . .
Bulb Usage Chart 9B–2. . . . . . . . . . . . . . . . . . . . . . . . . .
Fastener Tightening Specifications 9B–2. . . . . . . . . . .
SCHEMATIC AND ROUTING DIAGRAMS9B–3 . . . . .
Backup Lamps Circuit 9B–3. . . . . . . . . . . . . . . . . . . . . .
Instruments Circuit (W/O Dimmer Control :
General Only) 9B–4. . . . . . . . . . . . . . . . . . . . . . . . . . .
Instruments Circuit (W/ Dimmer Control) 9B–5. . . . . .
Front And Rear Fog Lamps Circuit 9B–6. . . . . . . . . . .
Headlamps–On Reminder Chime Circuit 9B–7. . . . . .
Headlamps and Headlamp Leveling Circuit 9B–8. . . .
Daytime Running Lamps Circuit 9B–9. . . . . . . . . . . . .
Parking, Tail and License Lamps Circuit 9B–10. . . . . .
Stoplamps Circuit 9B–11. . . . . . . . . . . . . . . . . . . . . . . . .
Turn and Hazard Lamps Circuit 9B–12. . . . . . . . . . . . .
Interior Courtesy and Luggage Compartment Lamp
Circuit 9B–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DIAGNOSIS9B–14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Headlamps–On Reminder Chime 9B–14. . . . . . . . . . .
Headlamps 9B–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Headlamp Leveling 9B–20. . . . . . . . . . . . . . . . . . . . . . .
Daytime Running Lamps 9B–22. . . . . . . . . . . . . . . . . . .
Parking Lamps and Taillamps 9B–23. . . . . . . . . . . . . .
Interior Courtesy and Luggage Compartment
Lamps 9B–31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fog Lamps 9B–34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MAINTENANCE AND REPAIR9B–36 . . . . . . . . . . . . . .
ON–VEHICLE SERVICE 9B–36. . . . . . . . . . . . . . . . . . . . Headlamps/Front Turn Signal Lamps 9B–36. . . . . . . .
Daytime Running Lamp Module 9B–37. . . . . . . . . . . . .
Parking Lamps 9B–37. . . . . . . . . . . . . . . . . . . . . . . . . . .
Side Turn Signal Lamps 9B–38. . . . . . . . . . . . . . . . . . .
Front Fog Lamps 9B–38. . . . . . . . . . . . . . . . . . . . . . . . .
Notchback Rear Combination Lamps 9B–39. . . . . . . .
Hatchback Rear Combination Lamps 9B–40. . . . . . . .
Hatchback Extension Lamps 9B–40. . . . . . . . . . . . . . .
Notchback Center High–Mounted Stoplamp 9B–41. .
Hatchback Center High–Mounted Stoplamp 9B–41. .
License Plate Lamps 9B–42. . . . . . . . . . . . . . . . . . . . . .
Door Jamb Switch 9B–42. . . . . . . . . . . . . . . . . . . . . . . .
Center Room Lamp 9B–43. . . . . . . . . . . . . . . . . . . . . . .
Map Lamp 9B–43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Luggage Compartment Lamp 9B–44. . . . . . . . . . . . . . .
Ashtray and Cigar Lighter Lamp 9B–44. . . . . . . . . . . .
GENERAL DESCRIPTION AND SYSTEM
OPERATION9B–46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Headlamps–On Reminder Chime 9B–46. . . . . . . . . . .
Headlamps 9B–46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Daytime Running Lamps 9B–46. . . . . . . . . . . . . . . . . . .
Parking and Turn Signal Lamps 9B–46. . . . . . . . . . . . .
Fog Lamps 9B–46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Combination Lamps 9B–46. . . . . . . . . . . . . . . . . .
License Plate Lamp 9B–46. . . . . . . . . . . . . . . . . . . . . . .
Interior Courtesy Lamp 9B–46. . . . . . . . . . . . . . . . . . . .
Luggage Compartment Lamp 9B–46. . . . . . . . . . . . . . .
Backup Lamps 9B–47. . . . . . . . . . . . . . . . . . . . . . . . . . .

9B – 2ILIGHTING SYSTEMS
DAEWOO V–121 BL4
SPECIFICATIONS
BULB USAGE CHART
BulbReplacement Bulb Number
Backup Lamp21W
Center High–Mounted Stoplamp5W
Front Fog Lamp27W
Headlamp55W
Interior Courtesy Lamp10W
License Plate Lamp5W
Luggage Compartment Lamp10W
Park and Front Turn Signal LampDouble 21/5W
Rear Fog Lamp21W
Rear Turn Signal Lamp21W
Side Turn Signal Lamp5W
Taillamp and StoplampDouble 21/5W
FASTENER TIGHTENING SPECIFICATIONS
ApplicationNSmLb–FtLb–In
CHMSL Mounting Nuts4–35
Door Jamb Switch Screw4–35
Front Fog Lamp Nuts4–35
Headlamp Assembly Bolts and Nuts4–35
License Plate Lamp Screws4–35
Map Lamp Screws1.5–13
Rear Combination Lamp Assembly Screws4–35
Hatchback Extension Lamp3–27

LIGHTING SYSTEMS 9B – 23
DAEWOO V–121 BL4
PARKING LAMPS AND TAILLAMPS
Parking Lamps and Taillamps Do Not Work
StepActionValue(s)YesNo
1Check the headlamps.
Do the headlamps work?–Go to Step 3Go to Step 2
2Repair the headlamps before continuing with this
chart.
After the headlamps have been repaired, are the
parking lamps and taillamps still inoperative?–Go to Step 3System OK
31. Turn the parking lamps on.
2. Use a voltmeter to check voltage at the bulb
socket positive terminal.
Does voltage at the bulb socket equal the specified
value?11–14 vGo to Step 4Go to Step 7
4Connect an ohmmeter between ground and the
lamp socket negative terminal.
Is the resistance equal to the specified value?
0 WGo to Step 6Go to Step 5
5Repair the ground circuit for the lamps.
Is the repair complete?–System OK–
6Replace the faulty bulbs.
Is the repair complete?–System OK–
7Check fuses Ef23 and Ef28.
Are any of the fuses blown?–Go to Step 8Go to Step 9
81. Check for a short circuit and repair it, if neces-
sary.
2. Replace the fuse.
Is the repair complete?–System OK–
91. Turn the headlamps on.
2. Check the voltage at fuses Ef23 (left–side illu-
mination lamp) and Ef28 (right–side illumination
lamp).
Does the voltage at the fuses equal the specified val-
ue?11–14 vGo to Step 10–
10Repair the open circuit between the fuses Ef23 and
Ef28 and the illumination lamps.
Is the repair complete?–System OK–

9B – 24ILIGHTING SYSTEMS
DAEWOO V–121 BL4
Stoplamps Do Not Work
Notice : When probing a bulb socket with a voltmeter or a test lamp, do not contact the side of the socket (ground) when
you are testing the positive contact at the bottom of the socket. If the voltage and the ground are both available at the bulb
socket, contacting both at the same time with a test probe will cause a blown fuse.
Step
ActionValue(s)YesNo
1Check fuse Ef13.
Is fuse Ef13 blown?–Go to Step 2Go to Step 3
21. Check for a short circuit and repair it, if neces-
sary.
2. Replace the fuse.
Is the repair complete?–System OK–
3Use a voltmeter to check the voltage at fuse Ef13.
Is the voltage at Ef13 equal to the specified value?11–14 vGo to Step 5Go to Step 4
4Repair the power supply circuit for fuse Ef13.
Is the repair complete?–System OK–
51. Press the brake pedal.
2. Check the positive terminals of the bulb sock-
ets with a test lamp.
Does the test lamp illuminate?–Go to Step 6Go to Step 8
6Connect an ohmmeter between ground and the sto-
plamp ground terminal.
Is the resistance equal to the specified value?0 WGo to Step 8Go to Step 7
7Repair the ground circuit.
Is the repair complete?–System OK–
81. Disconnect the wiring connector from the brake
switch.
2. Press the brake pedal.
3. Use an ohmmeter to check continuity between
terminals 2 and 4.
Is the resistance equal to the specified value?0 WGo to Step 10Go to Step 9
9Replace the brake switch.
Is the repair complete?–System OK–
101. Disconnect the brake switch electrical connec-
tor.
2. Check the voltage at terminal 2.
Does the voltmeter show the specified value?11–14 vGo to Step 12Go to Step 11
11Repair the open circuit between the fuse Ef13 and
the brake switch.
Is the repair complete?–System OK–
12Repair the open circuit between the brake switch
and the stoplamps.
Is the repair complete?–System OK–

LIGHTING SYSTEMS 9B – 25
DAEWOO V–121 BL4
Center High–Mounted Stoplamp (CHMSL) Does Not Work
StepActionValue(s)YesNo
1Check the stoplamps.
Do the stoplamps work?–Go to Step 3Go to Step 2
2Repair the stoplamps before completing this diag-
nostic table.
Does the CHMSL work after the stoplamps have
been repaired?–System OKGo to Step 3
31. Remove the CHMSL lamp bulb.
2. Visually and physically check the CHMSL lamp
bulb.
Is the lamp bulb defective?–Go to Step 4Go to Step 5
4Replace the CHMSL lamp bulb.
Is the repair complete?–System OK–
51. Disconnect the CHMSL connector.
2. Use an ohmmeter to measure the resistance
between ground and the BLK wire in the
CHMSL connector.
Is the resistance equal to the specified value?0 WGo to Step 7Go to Step 6
6Repair the open circuit between ground and the BLK
wire in the CHMSL connector.
Is the repair complete?–System OK–
7Repair the open circuit between the stoplamp switch
and the CHMSL.
Is the repair complete?–System OK–

9B – 26ILIGHTING SYSTEMS
DAEWOO V–121 BL4
Backup Lamps Inoperative
StepActionValue(s)YesNo
11. Block the wheels.
2. Apply the parking brake to prevent the vehicle
from moving.
3. Turn the ignition on.
4. Put the transaxle in reverse (R).
5. Remove one of the backup lamps from its
socket.
6. Test the lamp socket positive terminal with a
voltmeter.
Does the battery voltage available at the backup
lamp socket positive terminal equal the specified
value?11–14 vGo to Step 3Go to Step 2
2Repair the open circuit between fuse F20 and the
backup lamps.
Is the repair complete?–System OK–
3Connect an ohmmeter between ground and the neg-
ative terminal at the bulb socket.
Is the resistance equal to the specified value?0 WGo to Step 4Go to Step 5
4Replace the faulty backup lamps.
Is the repair complete?–System OK–
51. Reinstall the backup lamps.
2. Disconnect the electrical connector at the re-
verse switch. (On automatic transaxle (A/T)
vehicles, disconnect the neutral safety/backup
switch.)
3. Turn the ignition on.
4. Put the transaxle in R.
5. Use a voltmeter to check for the reverse switch
terminal 1. (On A/T vehicles, test terminal 7 of
the neutral safety/backup switch).
Does the battery voltage available at terminal 1 (or
terminal 7, if equipped with A/T) equal the specified
value?11–14 vGo to Step 7Go to Step 6
6Repair the open circuit between the backup lamps
and the, reverse switch (or the neutral safety/backup
switch if equipped with A/T).
Is the repair complete?–System OK–
71. Put the transaxle in R.
2. Use an ohmmeter to check the continuity be-
tween reverse switch terminal 1 and terminal 2
(terminals 7 and 8 on the neutral safety/backup
switch, if equipped with A/T).
Does the continuity between terminals 1 and 2 (ter-
minals 7 and 8, if equipped with A/T) equal the speci-
fied value?0 WGo to Step 9Go to Step 8