Brake DAEWOO LACETTI 2004 Service Repair Manual

BODY WIRING SYSTEM 9A – 13
DAEWOO V–121 BL4
FUSE CHART
Engine Room Fuse Block
FuseRating/SourceCircuit
EF130AB+Battery Main (F13~F16, F21~F24)
EF260AB+EBCM, Oil Feeding Connector
EF330AB+Blower Relay
EF430AB+Ignition Switch–2
EF530AB+Ignition Switch–1
EF620AB+Cooling Fan Low Relay
EF730AB+Defog Relay
EF830AB+Cooling Fan HI Relay
EF920AIGN 2Power Window Switch
EF1015AIGN 1Fuel Connector, ECM (MR–140), LEGR, EI Sys-
tem
EF1110AB+ECM, Main Relay (Sirius D4)
EF1225AB+Head Lamp Relay, ILLUM. Relay
EF1315AB+Brake Switch
EF1420AIGN 2Power Window Switch
EF1515ALightHead Lamp HI
EF1615AB+Horn Relay, Siren, Hood Contact Switch
EF1710AB+A/C Comp. Relay
EF1815AIGN 1Fuel Pump
EF1915AB+Cluster, Key Remind S/W, Folding Mirror Unit,
MAP Lamp, Room Lamp, Trunk Open Lamp,
Trunk Open S/W
EF2010ALightHead Lamp Low
EF2115AIGN 1/B+EVAP Canister Purge Solenoid, HO2S, Cooling
Fan Relay
EF2215AIGN 1/B+Injector, EGR, EEGR
EF2310AIlluminationLicense Plate Lamp, Chime Bell, Tail Lamp,
Head Lamp
EF2415AB+Fog LampRelay
EF2510AIGN 2Electric OSRV Mirror
EF2615AB+Central Door Lock Unit
EF2710ALightHead Lamp Low
EF2810AIlluminationILLUM. Circuit, Head Lamp, Tail Lamp
EF2910ASpareNot Used
EF3015ASpareNot Used
EF3125ASpareNot Used

9A – 14IBODY WIRING SYSTEM
DAEWOO V–121 BL4
I/P Fuse Block
FuseRating/SourceCircuit
F110AIGN 1SDM
F210AIGN 1TCM, ECM, Generator, VGIS, VSS
F315AIGN 1Hazard Switch
F410AIGN 1Cluster, DRL Module, Chime Bell, Brake Switch,
SSPS Module, A/C Control Switch
F5–Spare–
F610AIGN 2A/C Comp. Relay, Defog Relay, Power Window
Relay, Head Lamp Relay
F720AIGN 2Blower Relay, A/C Control Switch, FATC
F815AIGN 2Electric Mirror Switch, Folding Mirror, Sun Roof
Module
F925AIGN 1Wiper Motor, Wiper Switch
F10–Spare–
F1110AIGN 1EBCM, Oil Feeding Connector
F1210AIGN 1Immobilizer, Anti Theft Control Unit, Rain Sensor
Unit
F1310AB+TCM
F1415AB+Hazard Switch
F1515AB+Anti Theft Control Unit
F1610AB+DLC
F1710AACCAudio, Clock
F1815AACCExtra Power Jack
F1915AACCCigar Lighter
F2010AIGN 1Reverse Lamp Switch, PNP Switch
F2115AB+Rear Fog Relay
F2215AB+Clock, FATC, A/C Control Switch
F2315AB+Audio
F2410AB+Immobilizer

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–

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–

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

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.

9E – 2IINSTRUMENTATION/DRIVER INFORMATION
DAEWOO V–121 BL4
SPECIFICATIONS
FASTENER TIGHTENING SPECIFICATIONS
ApplicationNSmLb–FtLb–In
Air Deflector Screws2–18
Chime Module Screws4–35
Clock Screws2–18
Cupholder Screws2.5–22
Deposit Box Screws2.5–22
Driver Knee Bolster Bolts10–89
Floor Console Brace Bolts4–35
Floor Console Brace Nuts4–35
HVAC Controls Screws4–35
Instrument Cluster Screws4–35
Instrument Cluster Trim Panel Screws4–35
Instrument Panel End Bolts2015–
Instrument Panel End Screws4–35
Instrument Panel Nuts Above the Steering Column2015–
Instrument Panel Bolts Behind the HVAC Controls4–35
Steering Column Bracket Nut2216–
Steering Column Lower Trim Cover Screws2.5–22
Steering Column U–Clamp Nuts2216–
Steering Column Upper Trim Cover Screws3–27
INSTRUMENT CLUSTER INDICATOR LAMPS
SPECIFICATIONS
Indicator LampColorBulb
ABS WarningAmber14 v 1.4 W
Airbag WarningRed14 v 1.4 W
Battery Charge IndicatorRed14 v 1.4 W
Check EngineAmber14 v 1.4 W
Door Open WarningRed14 v 1.4 W
Engine OverheatRed14 v 1.4 W
Fasten Seat Belt WarningRed14 v 1.4 W
High Beam IndicatorBlue14 v 1.4 W
Low Fuel Level WarningAmber14 v 4 W
Oil Pressure WarningRed14 v 1.4 W
Parking Brake Indicator and Brake Fluid WarningRed14 v 1.4 W
Service Engine Soon WarningAmber14 v 1.4 W
Transaxle Power Mode IndicatorAmber14 v 1.4 W
Turn Signal IndicatorsGreen14 v 1.4 W

9G – 16IINTERIOR TRIM
DAEWOO V–121 BL4
GENERAL DESCRIPTION
AND SYSTEM OPERATION
INTERIOR TRIM PANELS
The interior trim panels are molded plastic and fasten with
screws or plastic clips.
PRESSURE RELIEF VENT
When all the windows are closed and the ventilation sys-
tem is on, the addition of outside air to the interior of the
vehicle causes a positive pressure within the vehicle. To
relieve the pressure, air is released through a pressure re-
lief vent. The pressure relief vents are located at the rear
quarter of the vehicle, behind the bumper fascia.
FLOOR CONSOLE
The floor console fits over the tunnel in the floor of the ve-
hicle and extends from under the center of the instrument
panel to the rear seat area. The front portion of the consolecontains the cigar lighter and the transaxle shift lever. The
rear portion of the console contains the parking brake le-
ver, a cupholder, a storage compartment, and an ashtray
for the rear seat occupants.
The sensing and diagnostic module (SDM) for the airbag
system and the remote keyless entry module are located
under the console.
FLOOR CARPET
The one–piece floor carpet goes over both the front and
the rear floor pans.
REAR COMPARTMENT SECURITY
COVER (HATCHBACK)
A rear compartment security cover is provided on the
hatchback model. The security cover is attached to the
hatch and can be easily removed if more cargo space is
needed.

SECTION : 9K
SQUEAKS AND RATTLES
TABLE OF CONTENTS
DIAGNOSIS9K–1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Squeak and Rattle Diagnosis 9K–1. . . . . . . . . . . . . . . .
MAINTENANCE AND REPAIR9K–3 . . . . . . . . . . . . . . . ON–VEHICLE SERVICE 9K–3. . . . . . . . . . . . . . . . . . . . .
Squeak and Rattle Repair 9K–3. . . . . . . . . . . . . . . . . . .
DIAGNOSIS
SQUEAK AND RATTLE DIAGNOSIS
Rattle Coming From the Side Rail
ChecksAction
Check the brake lines.S Tap lightly on the brake lines and listen for a rattle.
S Install plastic tie straps to secure the brake lines
tightly together.
Rattle Under Vehicle at Higher RPM
ChecksAction
Check for heat shield contact with the underbody.S Raise the vehicle and perform a visual inspection.
S Bend the heat shield slightly to gain clearance from
the underbody.
Squeak From the Front of the Vehicle in Cold Weather
ChecksAction
Check the front stabilizer shaft insulators.S While the vehicle is cold, perform a test drive and
achieve full front suspension travel by driving through
a dip in the road.
S Remove the insulators and wrap teflon tape around
the stabilizer shaft. Reinstall the insulators over the
tape.
Thump From Rear of Vehicle on Bumps
ChecksAction
Check for a properly secured spare tire in the rear
compartment.S Open the rear compartment and perform a visual
inspection of the spare tire and the tools.
S Tightly secure the spare tire and all tools.
S Perform a road test to verify that the noise is elimi-
nated.

SECTION : 9T1
REMOTE KEYLESS ENTRY AND ANTI–THEFT
SYSTEM
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
SPECIFICATIONS 9T1–1 . . . . . . . . . . . . . . . . . . . . . . . . .
Fastener Tightening Specifications 9T1–1. . . . . . . . . .
SCHEMATIC AND ROUTING DIAGRAMS9T1–2 . . . .
Notchback Remote Keyless Entry and Anti–Theft
System 9T1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hatchback Remote Keyless Entry and Anti–Theft
System 9T1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Control Module/Receiver Connector 9T1–4. . . . . . . . .
MAINTENANCE AND REPAIR9T1–5 . . . . . . . . . . . . . .
ON–VEHICLE SERVICE 9T1–5. . . . . . . . . . . . . . . . . . . .
Control Module/Receiver 9T1–5. . . . . . . . . . . . . . . . . . .
Siren (General Only) 9T1–5. . . . . . . . . . . . . . . . . . . . . . Remote Keyless Entry Transmitter
Programming 9T1–7. . . . . . . . . . . . . . . . . . . . . . . . . . .
GENERAL DESCRIPTION AND SYSTEM
OPERATION9T1–8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Remote Keyless Entry and Anti–Theft System 9T1–8
Remote Locking and Unlocking 9T1–8. . . . . . . . . . . . .
Security Indicator 9T1–8. . . . . . . . . . . . . . . . . . . . . . . . .
Intrusion Sensing 9T1–8. . . . . . . . . . . . . . . . . . . . . . . . .
Siren (General Only) 9T1–8. . . . . . . . . . . . . . . . . . . . . .
Vehicle Locator 9T1–8. . . . . . . . . . . . . . . . . . . . . . . . . . .
Autolocking (Safety Lock) 9T1–9. . . . . . . . . . . . . . . . . .
Control Module/Receiver 9T1–9. . . . . . . . . . . . . . . . . . .
Fault or Alarm Indication 9T1–9. . . . . . . . . . . . . . . . . . .
SPECIFICATIONS
FASTENER TIGHTENING SPECIFICATIONS
ApplicationNSmLb–FtLb–In
Siren Braket Mounting Bolts.8–71