headlamp DAEWOO LACETTI 2004 Service Owner's Manual

9B – 20ILIGHTING SYSTEMS
DAEWOO V–121 BL4
HEADLAMP LEVELING
Headlamps Leveling System Does Not Work
StepActionValue(s)YesNo
1Check the headlamps.
Do the headlamps work?–Go to Step 3Go to Step 2
2Repair the headlamp system before completing this
diagnostic table.
Has the headlamp system been repaired?–Go to Step 3–
3Check fuses Ef20 and Ef27.
Is either of the fuses blown?–Go to Step 5Go to Step 4
41. Check for a short circuit and repair if neces-
sary.
2. Replace the blown fuse.
Is the repair complete?–System OK–
51. Turn the headlamps ON.
2. Check the voltage at fuses Ef20 and Ef27.
Is the specified voltage available at the fuses?11–14 vGo to Step 7Go to Step 6
6Repair the open circuit between the headlamp
switch and fuses Ef20 and Ef27.
Is the repair complete?–System OK–
71. Disconnect the electrical connectors at the
headlamp leveling motors.
2. Turn the headlamps ON.
3. Check the voltage at terminal 5 of the head-
lamps.
Is the specified voltage available at both headlamp
leveling motors?11–14 vGo to Step 9Go to Step 8
8Repair the open circuit between fuses Ef20 and Ef27
and the headlamps.
Is the repair complete?–System OK–
9With the headlamp leveling motors disconnected,
check the resistance between ground and terminal
6 of the headlamps.
Is the resistance equal to the specified value?
0 WGo to Step 11Go to Step 10
10Repair the ground circuit for the headlamps.
Is the repair complete?–System OK–
111. Turn the headlamps ON.
2. With the headlamps, check the voltage at ter-
minal 3 of the headlamp connector.
Is the voltage approximately equal the specified val-
ue?6.2–10.6 vGo to Step 16Go to Step 12
121. Disconnect the headlamp leveling switch.
2. Turn the headlamps ON.
3. Check the voltage at the connector 3 wire at
the headlamp leveling switch connector.
Is the voltage equal to the specified value?11–14 vGo to Step 14Go to Step 13
13Repair the open circuit between the headlamp relay
and the headlamp leveling switch.
Is the repair complete?–System OK–

LIGHTING SYSTEMS 9B – 21
DAEWOO V–121 BL4
StepNo Yes Value(s) Action
141. Turn the low–beam headlamps ON.
2. With the headlamp leveling switch removed for
testing and the electrical connector still con-
nected, check the voltage at the DK GRN wire
at the headlamp leveling switch with the switch
dial set at ”0”.11–14 vGo to Step 16Go to Step 15
15Replace the headlamp leveling switch.
Is the repair complete?–System OK–
161. Turn the low–beam headlamps ON.
2. With the headlamp leveling switch removed for
testing and the electrical connector still con-
nected, check the voltage at the DK GRN wire
at the headlamp leveling switch with the switch
dial set at ”3”.4.5 vGo to Step 17Go to Step 15
17Repair the open DK GRN wire between the head
lamp leveling switch and the headlamp leveling mo-
tors.
Is the repair complete?–System OK–

9B – 22ILIGHTING SYSTEMS
DAEWOO V–121 BL4
DAYTIME RUNNING LAMPS
Diagnostic Aids
The daytime running lamp (DRL) system will not work if the
parking brake is applied. The system is designed to work
only when the engine is running and the parking brake isreleased. If the parking brake circuit is shorted to ground
or the switch stays closed when the engine is running, the
DRL system will not work.
Daytime Running Lamps (DRL) Do Not Turn ON
StepActionValue(s)YesNo
1Turn the headlamps ON with the headlamp switch.
Do the headlamps work?–Go to Step 3Go to Step 2
2Repair the regular headlamp system before com-
pleting this diagnostic table.
Does the DRL system work after the headlamps
have been repaired?–System OKGo to Step 3
3With the DRL module still disconnected, use an
ohmmeter to check the resistance between ground
and terminal 5 of the DRL module connector.
Is the resistance equal to the specified value?
0 WGo to Step 5Go to Step 4
4Repair the circuit between ground and terminal 5 of
the DRL module connector.
Is the repair complete?–System OK–
51. Release the parking brake.
2. Turn the ignition switch ON.
3. Observe the parking brake indicator lamp.
Is the parking brake indicator lamp ON?–Go to Step 6Go to Step 9
6Disconnect the electrical connector to the parking
brake lever switch.
Is the parking brake indicator lamp still ON?–Go to Step 7Go to Step 8
7Repair the short to ground in the parking brake cir-
cuit.
Is the repair complete?–System OK–
8Replace the parking brake lever switch.
Is the repair complete?–System OK–
91. Make sure the headlamps are turned OFF.
2. With the DRL module disconnected, turn the
ignition ON.
3. Check the voltage at terminal 6 of the DRL
module.
Is the voltage equal to the specified value?0 vGo to Step 11Go to Step 10
10Repair the open between fuse F4 and terminal 6 of
the DRL module.
Is the repair complete?–System OK–
11Replace the DRL module.
Is the repair complete?–System OK–

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 – 34ILIGHTING SYSTEMS
DAEWOO V–121 BL4
FOG LAMPS
Diagnostic Aids
The front fog lamps will not operate unless the illumination lamps or daytime running lamps are on. If the illumination lamps
or daytime running lamps are not operating, repair that problem before attempting to diagnose the fog lamps.
Front Fog Lamps Inoperative
StepActionValue(s)YesNo
1Check fuse Ef24.
Is fuse Ef24 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 fuse Ef24.
Does the battery voltage available at fuse Ef24 equal
the specified value?11–14 vGo to Step 5Go to Step 4
4Repair the open circuit from the battery to fuse Ef24.
Is the repair complete?–System OK–
5Remove the fog lamp relay and temporarily substi-
tute a known good relay, such as the headlamp relay.
(Do not substitute the illumination lamp relay.)
Do the fog lamps work with the substituted relay?–Go to Step 6Go to Step 7
61. Return the substituted relay to its original posi-
tion.
2. Replace the inoperative fog lamp relay.
Is the repair complete?–System OK–
71. Return the substituted relay to its original posi-
tion, but do not reinstall the fog lamp relay.
2. Turn on the exterior lamps and the front fog
lamps.
3. Using a voltmeter, check the fog lamp relay
socket at the connector for fog lamp relay ter-
minal 30.
Does the voltage available at the fog lamp relay
socket equal the specified value?11–14 vGo to Step 9Go to Step 8
8Repair the open circuit between fuse Ef24 and the
fog lamp relay.
Is the repair complete?–System OK–
9At the fog lamp relay socket, use an ohmmeter to
verify that the connector for relay terminal 85 is con-
nected to ground.
Does the resistance equal the specified value?0 WGo to Step 11Go to Step 10
10Repair the ground circuit for the fog lamp relay.
Is the repair complete?–System OK–
111. Reinstall the fog lamp relay.
2. Turn ON the exterior lamps and the front fog
lamps.
3. Test for voltage at terminal 2 of the fog lamp
connector.
Does the battery voltage available at terminal 2 of
the fog lamp connector equal the specified value?11–14 vGo to Step 13Go to Step 12

9B – 36ILITHING SYSTEMS
DAEWOO V–121 BL4
MAINTENANCE AND REPAIR
ON–VEHICLE SERVICE
HEADLAMPS/FRONT TURN SIGNAL
LAMPS
Removal Procedure
1. Disconnect the negative battery cable.
2. Remove the headlamp mounting bolts and nut.
3. Disconnect the electrical connectors.
4. Remove the turn signal bulb.
5. Remove the headlamp assembly.
6. Remove the cap concealing the headlamp bulb.
7. Disconnect the headlamp bulb electrical connector.
8. Remove the headlamp bulb.
Installation Procedure
1. Install the headlamp bulb.
2. Connect the headlamp bulb electrical connector.
3. Install the cap concealing the headlamp bulb.
4. Install the turn signal bulb.
5. Connect the electrical connectors.
Notice : Dissimilar metals in direct contact with each other
may corrode rapidly. Make sure to use the correct fasten-
ers to prevent premature corrosion.
6. Install the headlamp assembly with the bolts and
nut.
7. Connect the negative battery cable.

LITHING SYSTEMS 9B – 37
DAEWOO V–121 BL4
Tighten
Tighten the headlamp assembly bolts and nut to 4
NSm (35 lb–in).
DAYTIME RUNNING LAMP MODULE
Removal Procedure
1. Disconnect the negative battery cable.
2. Remove the instrument panel under cover and the
knee bolster.
3. Remove the bolts and the daytime running lamp
module.
4. Disconnect the electrical connector.
Installation Procedure
1. Connect the electrical connector.
2. Install the daytime running lamp module with the
bolts.
Tighten
Tighten the daytime running lamp module bolts to 2
NSm (18 lb–in).
3. Install the instrument panel under cover and the
knee bolster.
4. Connect the negative battery cable.
PARKING LAMPS
Removal Procedure
1. Disconnect the negative battery cable.
2. Remove the headlamp. Refer to ”Headlamps” in
this section.
3. Remove the parking lamp.

9B – 38ILITHING SYSTEMS
DAEWOO V–121 BL4
Installation Procedure
1. Install the parking lamp.
2. Install the headlamp. Refer to ”Headlamps” in this
section.
3. Connect the negative battery cable.
SIDE TURN SIGNAL LAMPS
Removal Procedure
1. Disconnect the negative battery cable.
2. Slide the side turn signal lamp rearward.
3. Remove the lamp.
4. Disconnect the electrical connector.
Installation Procedure
1. Connect the electrical connector.
2. Install the side turn signal lamp.
3. Connect the negative battery cable.
FRONT FOG LAMPS
Removal Procedure
1. Disconnect the negative battery cable.
2. Remove the bolts and the front fog lamp.
3. Disconnect the electrical connector.

9B – 46ILITHING SYSTEMS
DAEWOO V–121 BL4
GENERAL DESCRIPTION
AND SYSTEM OPERATION
HEADLAMPS–ON REMINDER CHIME
When the headlamp switch is in the headlamps–on or
parking lamps–on position, voltage is applied to the chime
module. When the ignition is in ON, ACC or START, volt-
age is applied through the fuse block to the module. These
two voltages are sensed, and the chime module is not
sounded.
When the ignition is not in ON, ACC or START, the module
loses voltage. The chime module senses change. If the
voltage is still available, it is applied to sound the chime.
The chime can be turned off by turning the headlamp
switch off. The module no longer senses voltage from the
headlamp switch, so the chime module does not sound.
HEADLAMPS
The headlamps are controlled by the multifunction lever
located on the left side of the steering column. They will
come on with the ignition switch in any position. Turning
the headlamp switch to the first position turns on the park-
ing lamps, the license plate lamps and the instrument pan-
el illumination. Turning the switch to the second position
turns on all of the previous lamps and the headlamps.
Turning the switch to the OFF position turns off all the
lamps.
Headlamp high beams and low beams are also controlled
by this lever. When the headlamps are on, pushing the le-
ver away from the driver until the switch clicks changes the
lamp from low beam to high beam. An indicator lamp on
the instrument cluster assembly will come on when the
high beam headlamps are on. To return the headlamps to
low beam, pull the lever toward the driver.
The headlamps must be aimed for proper illumination of
the road. Headlamp aim should be checked whenever a
new headlamp assembly is installed, or whenever service
repairs to the front end area may have disturbed the head-
lamp assembly or its mountings.
DAYTIME RUNNING LAMPS
The Daytime Running Lamps (DRL) will come on when:
S The ignition is ON.
S The light is OFF.
S The parking brake is released.
When the exterior lights are on, the DRL will turn off. To
turn the DRL off when idling, apply the parking brake.
PARKING AND TURN SIGNAL LAMPS
The parking lamps can be turned on by turning the lighting
switch to the first position. The parking lamps can be
turned off by turning the switch to the OFF position.When the turn signals are activated, the front and rear turn
signal lamps flash to signal a turn. The turn signals work
only when the ignition is ON.
The turn signals are controlled by the light switch on the
left side of the steering column. Moving the lever all the
way up or down (past the detent) will turn on the front and
rear turn signals. When the turn is completed, the lever will
return to horizontal and the turn signals will stop flashing.
For changing lanes, or for shallow turns in which the steer-
ing wheel does not turn far enough to cancel the signal,
move the signal lever only to the first detent and hold it
there. When the lever is released, it will return to horizontal
and the turn signals will cancel.
FOG LAMPS
The fog lamp switch is on the instrument panel to the right
of the steering column. To use the fog lamps, first turn on
the headlamps or the parking lamps. Then push the fog
lamp switch. The indicator light in the switch will illuminate
to indicate that the fog lamps are on. Push the switch again
to turn off the fog lamps. The indicator light will then go off.
The fog lamps should not be used as a substitute for the
headlamps.
The fog lamps must be aimed for proper illumination of the
road. Fog lamp aim should be checked when a new bulb
is installed or if service or repairs in the front end area may
have disturbed the fog lamp mountings.
REAR COMBINATION LAMPS
The taillamps, stoplamps, turn signal lamps and backup
lamp are one assembly.
Turning on either the headlamps or the parking lamps will
also turn on the taillamps. When the brake pedal is
pushed, the taillamps will glow brighter to serve as sto-
plamps.
The center high–mounted stoplamp is located in the rear
window and will come on when the brake pedal is pressed.
LICENSE PLATE LAMP
The license plate lamps will come on when the headlamps
or the parking lamps are on. The license plate lamps are
mounted above the license plate.
INTERIOR COURTESY LAMP
The courtesy lamp is located on the headliner just behind
the front seats. The lamp switch has three positions. If the
switch is left in the center position, the lamp will go on
whenever a door is opened and go off when it is closed.
In the ON position, the lamp will stay on until it is turned off.
In the OFF position, the lamp will not come on, even when
a door is opened.
LUGGAGE COMPARTMENT LAMP
The luggage compartment lamp is located under the deck
lid sill plate on the notchback. The lamp is located on the
left–side wheelhouse trim panel on the hatchback. It will
come on whenever the luggage compartment is opened.

SECTION : 9E
INSTRUMENTATION/DRIVER INFORMATION
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
SPECIFICATIONS9E–2 . . . . . . . . . . . . . . . . . . . . . . . . . .
Fastener Tightening Specifications 9E–2. . . . . . . . . . .
Instrument Cluster Indicator Lamps
Specifications 9E–2. . . . . . . . . . . . . . . . . . . . . . . . . . .
SCHEMATIC AND ROUTING DIAGRAMS9E–3 . . . . .
Instrument Cluster Circuit (1 of 2) 9E–3. . . . . . . . . . . .
Instrument Cluster Circuit (2 of 2) 9E–4. . . . . . . . . . . .
Cigar Lighter And Extra Power Jack Circuit 9E–5. . . .
DIAGNOSIS9E–6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cigar Lighter 9E–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Digital Clock 9E–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Instrument Panel Illumination 9E–9. . . . . . . . . . . . . . . .
Speedometer 9E–10. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel Gauge 9E–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Temperature Gauge 9E–11. . . . . . . . . . . . . . . . . . . . . . .
Instrument Cluster Indicator Lamps 9E–12. . . . . . . . .
Chime Module 9E–13. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chime Module 9E–14. . . . . . . . . . . . . . . . . . . . . . . . . . . .
MAINTENANCE AND REPAIR9E–18 . . . . . . . . . . . . . .
ON–VEHICLE SERVICE 9E–18. . . . . . . . . . . . . . . . . . . .
Center Molding 9E–18. . . . . . . . . . . . . . . . . . . . . . . . . . .
Instrument Cluster Trim Panel 9E–18. . . . . . . . . . . . . .
Garnish Molding 9E–19. . . . . . . . . . . . . . . . . . . . . . . . . .
Ashtray 9E–19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cigar Lighter 9E–20. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Glove Box 9E–20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Notchback Deposit Box 9E–21. . . . . . . . . . . . . . . . . . . .
Notchback Digital Clock 9E–21. . . . . . . . . . . . . . . . . . .
Hatchback Digital Clock 9E–22. . . . . . . . . . . . . . . . . . .
Instrument Cluster 9E–23. . . . . . . . . . . . . . . . . . . . . . . .
Instrument Cluster Dimmer/Headlamp
Leveling Switch 9E–23. . . . . . . . . . . . . . . . . . . . . . . . .
Instrument Cluster Indicator Lamps 9E–24. . . . . . . . .
Instrument Panel 9E–24. . . . . . . . . . . . . . . . . . . . . . . . .
Chime Module 9E–28. . . . . . . . . . . . . . . . . . . . . . . . . . . .
GENERAL DESCRIPTION AND SYSTEM
OPERATION9E–30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cigar Lighter 9E–30. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ashtray 9E–30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Instrument Panel Vents 9E–30. . . . . . . . . . . . . . . . . . . .
Glove Box 9E–30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Digital Clock 9E–30. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Instrument Cluster 9E–30. . . . . . . . . . . . . . . . . . . . . . . .
Speedometer/Odometer/Trip Odometer 9E–30. . . . . .
Fuel Gauge 9E–30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Temperature Gauge 9E–30. . . . . . . . . . . . . . . . . . . . . . .
Instrument Cluster Indicator Lamps 9E–30. . . . . . . . .
Chime Module 9E–30. . . . . . . . . . . . . . . . . . . . . . . . . . . .