2004 DAEWOO LACETTI lights

ANTILOCK BRAKE SYSTEM 4F – 47
DAEWOO V–121 BL4
J3B14F10
EBCM
ORN/
BLK
LT BLULT B L U
BLK/ WHT
C201 C202
141
40
19
61
G1062
4
15A Ef13
6
C10211
S30114
C201C110
76
C202 11
DIAGNOSTIC TROUBLE CODE (DTC) C0161
ABS BRAKE SWITCH CIRCUIT MALFUNCTION
Circuit Description
When the brake pedal is depressed, the contacts on the
brake light switch close to illuminate the brake lights. Bat-
tery voltage is also applied to terminal 14 of the electronic
brake control module (EBCM), which signals the ABS con-
troller that the brakes are applied and ABS may be need-
ed. Without this, signals from a wheel speed sensor that
may indicate need for ABS intervention are questionable.
When the brake pedal is not depressed, the EBCM termi-
nal 14 is grounded through the brake lights.
Diagnosis
This procedure will check whether there is no output or
constant output from the brake light switch and will deter-
mine the cause as a faulty switch or a problem in the cir-
cuitry.
Cause(s)
S The ground connection or the positive connection at
the EBCM has failed.
S There is an open, short to ground, or short to posi-
tive in the vehicle wiring.S The brake light switch has failed.
Fail Action
The system records a DTC C0161. ABS and EBD opera-
tion is enabled and ABS / EBD warning lamp don’t turn on.
Test Description
The number(s) below refer to step(s) on the diagnostic
table.
1. This simple test will isolate the problem to the fuse–
brake light switch–splice 301 area or the splice
301–EBCM area.
3. This is the first step in identifying an open, a short
to ground, a short to voltage, or a faulty brake light
switch.
11. This step begins the process of finding an open, a
defective connector, or a faulty EBCM.
Diagnostic Aids
Inspect wiring and connectors carefully and thoroughly.
Failure to do so could result in misdiagnosis, causing part
replacement with reappearance of the malfunction.

4F – 48IANTILOCK BRAKE SYSTEM
DAEWOO V–121 BL4
DTC C0161 – ABS Brake Switch Circuit Malfunction
StepActionValue(s)YesNo
1Step on the brake pedal.
Do the brake lights come on at all?–Go to Step 3Go to Step 2
2Remove your foot from the brake pedal.
Do the lights stay on continuously?–Go to Step 8Go to Step 11
3Check fuse EF13 in the engine compartment fuse
block.
Is fuse EF13 blown?–Go to Step 4Go to Step 6
41. Replace fuse EF13.
2. Check the new fuse.
Does the new fuse blow?–Go to Step 5Go to Step 7
51. Repair the short to ground in the brake light
circuitry.
2. Install a new fuse EF13.
Is the repair complete?–System OK–
6Repair the open in the brake light switch circuit ORN/
BLK from terminal 6 of connector C102 at the engine
fuse block to the brake light switch and circuit LT
BLU from terminal 11 of splice S301.
Is the repair complete?–System OK–
7Check for functioning of the brake lights and the ABS
system.
Is the repair complete?–System OK–
8Check the brake light switch on the brake pedal.
Is the switch faulty?–Go to Step 9Go to Step 10
9Repair the brake light switch.
Is the repair complete?–System OK–
10Repair the short to positive in the circuit YEL be-
tween the brake light switch, splice S301, the brake
lights, the center high–mounted stoplamp, and the
ABS wiring harness connector at the EBCM terminal
14.
Is the repair complete?–System OK–
111. Disconnect the EBCM connector.
2. Use a digital voltmeter (DVM) to measure volt-
age between pins 14 and 19 of the ABS har-
ness connector at the EBCM.
3. Have an assistant step on the brake pedal.
Does the DVM indicate the specified value?11–14 vGo to Step 13Go to Step 12

5A1 – 86IZF 4 HP 16 AUTOMATIC TRANSAXLE
DAEWOO V–121 BL4
DIAGNOSTIC TROUBLE CODE(DTC) P0705
TRANSMISSION RANGE SENSOR CIRCUIT
MALFUNCTION (PRNDL INPUT)
Circuit Description
The Transmission range switch is located on the selector
shaft and informs the TCM of the current selector lever
position P–R–N–D–3–2–1.
The selector lever position is transmitted to the TCM in en-
coded form along 4 lines. The encoding is such that mal-
functions in the connecting lead are identified.
The TR switch is located on the selector shaft, which is
connected to the selector lever via a pull cable. In addition,
the TR switch controls the starter interlock, the reverse
lights and the selector lever position indicator on the in-
strument panel.
Conditions for Setting The DTC
S TR switch stuck to closed.
S TR switch wiring harness shortage to ground.
S TR switch wiring harness shortage to power.
S Immediately after the above condition occurs.Action Taken When The DTC Sets
S The Malfunction Indicator Lamp(MIL) will illuminate.
S The TCM will record operating conditions at the
time the diagnostic fails. This information will be
stored in the Failure Records buffer.
S Adopt Emergency/ Substitute mode and constant
4th gear.
Conditions for Clearing the MIL/DTC
S The MIL will turn OFF when the malfunction has
not occurred after three–ignition cycles.
S A history DTC will clear after 40 consecutive warm
up cycles without a fault.
S Using a scan tool can clear history DTCs.
Diagnostic Aids
S When DTC P0705 sets, the possible cause of TR
switch.

6E – 6ISTEERING WHEEL AND COLUMN
DAEWOO V–121 BL4
Turn Signal/Dimmer Switch
Turn Signal Will Not Stay in the Turn Position
ChecksAction
Check the turn signal switch for an improper installation.Remove and inspect the turn signal switch. Reinstall the
switch.
Check the cancelling mechanism for broken or missing
components.Replace the cancelling mechanism.
Check the turn signal switch housing for foreign material.Remove any foreign material.
Turn Signal Will Not Cancel
ChecksAction
Check the cancelling mechanism for broken or missing
components.Replace the cancelling mechanism.
Turn Signal/Dimmer Switch Difficult to Operate
ChecksAction
Check the turn signal/dimmer switch and turn signal/dim-
mer switch lever for improper installation.Remove and inspect the turn signal/dimmer switch and
signal/dimmer switch lever. Reinstall the signal/dimmer
switch and signal/dimmer switch lever.
Check the signal/dimmer switch housing for foreign mate-
rial.Remove any foreign material.
Turn Signal Will Not Indicate Lane Change
ChecksAction
Check for a broken lane change pressure pad or a broken
spring hanger.Replace the lane change pressure pad or the spring hang-
er.
Check for improper functioning of the lane change spring.Replace the lane change spring.
Check the turn signal switch for improper installation.Replace the turn signal switch.
No Turn Signal Lights
ChecksAction
Check for an inoperative turn signal flasher.Replace the turn signal flasher.
Check for a faulty turn signal switch.Replace the turn signal switch.
Check the chassis–to–column connector for an improper
connection.Reconnect the chassis–to–column connector.
Turn Indicator Lights On, but Not Flashing
ChecksAction
Check for an inoperative turn signal flasher.Replace the turn signal flasher.
Check for a faulty turn signal switch.Replace the turn signal switch.
Check the chassis–to–column connector for an improper
connection.Reconnect the chassis–to–column connector.

STEERING WHEEL AND COLUMN 6E – 7
DAEWOO V–121 BL4
Front or Rear Turn Signal Lights Not Flashing
ChecksAction
Check for a faulty turn signal switch.Replace the turn signal switch.
Check the chassis–to–column connector for an improper
connection.Reconnect the chassis–to–column connector.
Turn Signal Lights Flash Very Slowly
ChecksAction
Check the chassis–to–column connector for an improper
connection.Reconnect the chassis–to–column connector.
Ignition Switch
Electrical System Will Not Function
ChecksAction
Check the ignition switch for damage.Replace the ignition switch.
Check the ignition switch for improper installation.Remove and inspect the ignition switch. Reinstall the igni-
tion switch.
Check the ignition switch electrical connector for improper
installation.Reconnect the ignition switch electrical connector.
Replace the ignition switch electrical connector.
Ignition Switch Will Not Turn
ChecksAction
Check the ignition switch for damage.Replace the ignition switch.
Check the ignition switch for improper installation.Remove and inspect the ignition switch. Reinstall the igni-
tion switch.
Wiper Lever and Switch
Switch Inoperative: No LOW, HIGH, INTERMITTENT or WASH
ChecksAction
Check the wiper lever and switch for damage.Replace the wiper lever and switch.
Check the wiper lever and switch for improper installation.Remove and inspect the wiper lever and switch.
Reinstall the wiper lever and switch.

AUTOMATIC TEMPERATURE CONTROL HEATING, VENTILATION, AND AIR CONDITIONING SYSTEM 7D – 7
DAEWOO V–121 BL4
CONTROLLER DOES NOT ILLUMINATE WHEN LIGHT
SWITCH IS ON
StepActionValue(s)YesNo
1Check other instrumentation lights.
Are those lights also off?–Go to Section
9E, Instrumen-
tation/Driver In-
formationGo to Step 2
21. Remove the controller.
2. Check the voltage between terminals A3 and
A4 of the controller connector.
Is the voltage within the specified value?11–14 vGo to Step 4Go to Step 3
3Repair the wiring harness between splice S204 and
controller connector terminal A4 or between splice
S203 and controller connector terminal A3.
Is the repair complete?–System OK–
4Check the illumination lamps.
Is one burned out?–Go to Step 5Go to Step 6
5Replace the burned out illumination lamp.
Is the repair complete?–System OK–

9B – 14ILIGHTING SYSTEMS
DAEWOO V–121 BL4
DIAGNOSIS
HEADLAMPS–ON REMINDER CHIME
Diagnostic Aids :
The fuse for the left–side taillamps is also part of the headlamps–on reminder chime circuit. The headlamps–on reminder
chime should operate when the ignition is OFF, the headlamps or parking lamps are on, and the driver door is open.
Headlamps–On Reminder Chime Does Not Work
StepActionValue(s)YesNo
1Turn the parking lamps on, and observe the tail-
lamps.
Are the taillamps operating correctly?–Go to Step 3Go to Step 2
2Repair the left–side taillamps before completing this
diagnostic table.
After the taillamps have been repaired, does the
headlamps–on reminder chime work?–System OKGo to Step 3
31. Disconnect the chime module electrical con-
nector.
2. Turn the headlamps on.
3. Check the voltage at terminal 6 of the chime
module connector.
Is the voltage equal to the specified value?11–14 vGo to Step 5Go to Step 4
4Repair the open circuit between fuse Ef23 and termi-
nal 6 of the chime module connector.
Is the repair complete?–System OK–
5Use an ohmmeter to check the resistance between
ground and terminal 5 of the chime module.
Is the resistance equal to the specified value?
0 WGo to Step 7Go to Step 6
6Repair the open circuit between ground and terminal
5 of the chime module.
Is the repair complete?–System OK–
71. Remove the driver door contact switch.
2. Remove the electrical connector from the driv-
er door contact switch.
3. Use an ohmmeter to measure the resistance
between the driver door contact switch connec-
tor and the chime module terminal 4.
Does the ohmmeter indicate the specified value?
0 WGo to Step 9Go to Step 8
8Repair the open circuit between the driver door con-
tact switch connector and the chime module termi-
nal 4.
Is the repair complete?–System OK–
91. Connect the electrical connector to the chime
module.
2. Connect a jumper wire between ground and
the connector for the driver door contact
switch.
3. Turn the ignition OFF.
4. Turn the lights on.
Does the headlamps–on reminder chime operate?–Go to Step 11Go to Step 10

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.