2004 DAEWOO LACETTI fuses

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 – 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 – 28ILIGHTING SYSTEMS
DAEWOO V–121 BL4
Turn Signal Lamps and Hazard Lamps Do Not Work
StepActionValue(s)YesNo
1Check fuses F3 and F14.
Is either fuse 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–
31. Turn the ignition ON.
2. Check the voltage at fuses F3 and F14.
Does the battery voltage available at both fuses F3
and F14 equal the specified value?11–14 vGo to Step 4Go to Step 7
41. Turn the hazard switch on.
2. Remove each of the inoperative lamps from its
socket.
3. Test each lamp socket positive terminal with a
voltmeter.
Does the battery voltage pulsing at the turn signal
hazard lamp socket positive terminal equal the spe-
cified value?11–14 vGo to Step 5Go to Step 9
5At each bulb socket, use an ohmmeter to check the
ground circuit.
Is the resistance equal to the specified value?
0 WGo to Step 6Go to Step 8
6Replace any faulty turn signal/hazard bulbs.
Is the repair complete?–System OK–
7Repair the power supply circuit to fuses.
Is the repair complete?–System OK–
8Repair the open ground wires.
Is the repair complete?–System OK–
91. Turn on the hazard lamp switch.
2. Test the blinker unit connector terminal 49a
with a voltmeter.
Does the battery voltage pulsing at the blinker unit
terminal 49a equal the specified value?11–14 vGo to Step 15Go to Step 10
101. Turn on the hazard lamp switch.
2. Test the blinker unit connector terminal 49 with
a voltmeter.
Does the battery voltage available at the blinker unit
terminal 49 equal the specified value?11–14 vGo to Step 11Go to Step 14
111. Disconnect the blinker unit from the connector.
2. Use an ohmmeter to check between ground
and the connector for terminal 31 of the blinker
unit.
Is the resistance equal to the specified value?
0 WGo to Step 13Go to Step 12
12Repair the blinker unit ground connection.
Is the repair complete?–System OK–
13Replace the faulty blinker unit.
Is the repair complete?–System OK–

LIGHTING SYSTEMS 9B – 29
DAEWOO V–121 BL4
StepNo Yes Value(s) Action
141. Disconnect the hazard lamp switch connector.
2. Check for voltage at terminal 8.
3. Turn the ignition ON.
4. Check for voltage at terminal 10.
Does the battery voltage available at both terminals
equal the specified value?11–14 vGo to Step 15Go to Step 20
151. Remove the hazard lamp switch.
2. Turn the hazard lamp switch off.
3. Check for continuity between terminals 7 and
10.
4. Turn the hazard lamp switch on.
5. Check for continuity between terminals 7 and
8.
Do both tests show the specified value?0 WGo to Step 18Go to Step 17
161. Remove the hazard lamp switch.
2. Turn the hazard lamp switch on.
3. Use an ohmmeter to check for continuity be-
tween terminals 5, 6, and 9.
Does the continuity between terminals 5, 6, and 9
equal the specified value?0 WGo to Step 19Go to Step 17
17Replace the faulty hazard lamp switch.
Is the repair complete?–System OK–
18Repair the open circuit between the hazard lamp
switch terminal 7 and the blinker unit terminal 49.
Is the repair complete?–System OK–
19Repair the open circuit between the hazard lamp
switch and the fuses F3 or F14.
Is the repair complete?–System OK–

INSTRUMENTATION/DRIVER INFORMATION 9E – 7
DAEWOO V–121 BL4
DIGITAL CLOCK
Digital Clock Inoperative
StepActionValue(s)YesNo
1Check fuses F17, Ef28 and F22.
Is either fuse F17, Ef28 and F22 blown?–Go to Step 2Go to Step 3
21. Check for a short circuit and repair it, if neces-
sary.
2. Replace the blown fuses.
Is the repair complete?–System OK–
31. Turn the ignition ON.
2. Use a voltmeter to check battery voltage avail-
able at fuses F17, Ef28 and F22.
Does the voltmeter indicate the value specified?11–14 vGo to Step 5Go to Step 4
4Repair the open power supply circuit for the fuse.
Is the repair complete?–System OK–
5Use a voltmeter to check the battery voltage avail-
able at the clock connector terminal 6.
Does the voltmeter indicate the value specified?11–14 vGo to Step 7Go to Step 6
6Repair the open circuit between the clock connector
terminal 2 and the fuse F22.
Is the repair complete?–System OK–
7Turn the ignition ON.
Is battery voltage available at the clock connector
terminal 5?–Go to Step 9Go to Step 8

AUDIO SYSTEMS 9F – 3
DAEWOO V–121 BL4
DIAGNOSIS
STEREO CASSETTE AM/FM RADIO
CD Player Inoperative, AM/FM Functions OK
StepActionValue(s)YesNo
1Using a good–quality CD, determine if the CD player
performs poorly or is inoperative.
Does the CD player function correctly?–Go to Step 2Go to Step 3
2Inform the customer that the problem is with the CD,
not the CD player.
Has the customer been informed?–System OK–
3Check the CD player for obstructions behind the
tape door.
Is an obstruction found?–Go to Step 4Go to Step 6
4Check to see if the obstruction can be removed.
Can the obstruction be removed?–Go to Step 5Go to Step 6
5Remove the obstruction.
Is the repair complete?–System OK–
6Replace the CD player.
Is the repair complete?–System OK–
AM/FM Cassette Radio Inoperative
StepActionValue(s)YesNo
1Check fuses F23 and F17.
Are fuses F23 and F17 blown?–Go to Step 2Go to Step 3
21. Check for a short circuit and repair it, if neces-
sary.
2. Replace the blown fuses.
Is the repair complete?–System OK–
31. Use a voltmeter to test for battery voltage at
fuse F23.
2. Turn the ignition ON and test for battery volt-
age at fuse F17.
Does the battery voltagematch the specified value at
fuses F23 and F17?11–14 vGo to Step 5Go to Step 4
4Repair the power supply circuit to the fuses.
Is the repair complete?–System OK–
51. Remove the cassette radio.
2. Turn the ignition ON.
3. Use a voltmeter to test for battery voltage at
the audio system connector terminals 4 and 5.
Does the battery voltage match the specified value
at both terminals?11–14 vGo to Step 7Go to Step 6
6Repair the open circuit between the audio system
connector and the fuse.
Is the repair complete?–System OK–
7Use an ohmmeter to test the ground circuit at the au-
dio system connector terminal 14.
Does the resistancematch the specified value?
0 WGo to Step 9Go to Step 8

9P – 6IDOORS
DAEWOO V–121 BL4
DIAGNOSIS
POWER WINDOWS
System With Only Front Power Windows, One or Both Windows
are Inoperative
CAUTION : When powering the window motors directly from a battery with jumper wires, make sure one of the
jumper wires contains a fuse. If the jumpers are accidentally touched together, the fuse will prevent sparking
and burns from sudden terminal heating.
Step
ActionValue(s)YesNo
11. Turn the ignition ON.
2. Attempt to operate both power windows.
Is either window working?–Go to
Step 18Go to
Step 2
2Visually inspect the connection at the dual
power window switch.
Is the electrical connector correctly attached
to the switch?–Go to
Step 4Go to
Step 3
3Correctly attach the electrical connector to
the dual power window switch.
Is the repair complete?–System
OK–
41. Disconnect the electrical connector from the
dual power window switch.
2. Turn the ignition ON.
3. Check the voltage at terminal 4 and 5 of the
power window main switch connector.
Is the voltage equal to the specified value?11–14 vGo to
Step 16Go to
Step 5
5Check fuses EF14 and EF9.
Is either fuse blown?–Go to
Step 6Go to
Step 7
61. Check for a short circuit and repair if neces-
sary.
2. Replace the blown fuse(s).
Is the repair complete?–System
OK–
71. Turn the ignition ON.
2. Check the voltages at fuses EF9 and EF14.
Are both voltages equal to the specified val-
ue?11–14 vGo to
Step 9Go to
Step 8
8Repair the power supply to the fuse which did
not indicate battery voltage with the ignition
on.
Is the repair complete?–System
OK–
91. Remove the power window relay.
2. Turn the ignition ON.
3. Check the voltage at terminal 30 and terminal
85 of the power window relay socket. (Termi-
nals of the relay socket can be identified by
the markings on the bottom of the relay.)
Does the voltmeter indicate the specified val-
ue at terminals 30 and 85?11–14 vGo to
Step 11Go to
Step 10
10Repair the open circuit between the fuses and
the power window relay.
Is the repair complete?–System
OK–

DOORS 9P – 9
DAEWOO V–121 BL4
System With Front and Rear Power Windows, One or Both Front
Windows are Inoperative
CAUTION : When powering the window motors directly from a battery with jumper wires, make sure one of the
jumper wires contains a fuse. If the jumpers are accidentally touched together, the fuse will prevent sparking
and burns from sudden terminal heating.
Step
ActionValue(s)YesNo
11. Turn the ignition ON.
2. Attempt to operate each front power window.
Is either window working?–Go to
Step 18Go to
Step 2
2Visually inspect the connection at the power
window main switch.
Is the electrical connector correctly attached
to the main switch?–Go to
Step 4Go to
Step 3
3Correctly attach the electrical connector to
the power window main switch.
Is the repair complete?–System
OK–
41. Disconnect the electrical connector from the
power window main switch.
2. Turn the ignition ON.
3. Check the voltage at terminal 3 and 10 of the
power window main switch connector.
Is the voltage equal to the specified value?11–14 vGo to
Step 16Go to
Step 5
5Check fuses EF14 and EF9.
Is either fuse blown?–Go to
Step 6Go to
Step 7
61. Check for a short circuit and repair, if neces-
sary.
2. Replace the blown fuse(s).
Is the repair complete?–System
OK–
71. Turn the ignition ON.
2. Check the voltages at fuses Ef9 and EF14.
Are both voltages equal to the specified val-
ue?11–14 vGo to
Step 9Go to
Step 8
8Repair the power supply to the fuse which did
not indicate battery voltage with the ignition
on.
Is the repair complete?–System
OK–
91. Remove the power window relay.
2. Turn the ignition ON.
3. Check the voltage at terminal 30 and terminal
86 of the power window relay socket. (Termi-
nals of the relay socket can be identified by
the markings on the bottom of the relay.)
Does the voltmeter indicate the specified val-
ue?11–14 vGo to
Step 11Go to
Step 10
10Repair the open circuit between the fuses and
the power window relay.
Is the repair complete?–System
OK–