DAEWOO LACETTI 2004 Service Repair Manual

9D – 4IWIPERS/WASHER SYSTEMS
DAEWOO V–121 BL4
WIPERS AND WASHER SYSTEM (HATCHBACK)

WIPERS/WASHER SYSTEMS 9D – 5
DAEWOO V–121 BL4
WIPERS AND WASHER SYSTEM (HATCHBACK)

9D – 6IWIPERS/WASHER SYSTEMS
DAEWOO V–121 BL4
DIAGNOSIS
WINDSHIELD WIPERS
Windshield Wipers Do Not Work At Any Speed
StepActionValue(s)YesNo
1Check fuse F9.
Is fuse F9 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–
3Check the voltage at fuse F9.
Is the voltage equal to the specified value?11–14 vGo to Step 5Go to Step 4
4Repair the open power supply circuit to fuse F9.
Is the repair complete?–System OK–
51. Disconnect the wiper motor connector.
2. Turn the ignition ON.
3. Turn the wiper switch to HI.
4. Check the voltage at the wiper motor connector
terminal 5.
Is the voltage equal to the specified value?11–14 vGo to Step 6Go to Step 7
6Replace the wiper motor.
Is the repair complete?–System OK–
71. The wiper switch is still disconnected.
2. Turn the ignition ON.
3. Check for battery voltage at the wiper switch
connector terminal A8.
Is the voltage equal to the specified value?11–14 vGo to Step 9Go to Step 8
8Repair the open circuit between the wiper switch
connector terminal A8 and fuse F9.
Is the repair complete?–System OK–
91. The wiper switch is still disconnected.
2. Turn the wiper switch to HI.
3. Use an ohmmeter to check for continuity be-
tween wiper switch terminal A8 and A9.
Does the ohmmeter indicate the specified value?
0 WGo to Step 11Go to Step 10
10Replace the wiper switch.
Is the repair complete?–System OK–
11Repair the open circuit between the wiper switch and
the wiper motor.
Is the repair complete?–System OK–

WIPERS/WASHER SYSTEMS 9D – 7
DAEWOO V–121 BL4
Wipers Do Not Work On HI Speed, LO Speed OK
StepActionValue(s)YesNo
11. Turn the ignition ON.
2. Turn the wiper switch to HI.
3. Check voltage at the wiper motor connector
terminal 5.
Is voltage equal to the specified value?11–14 vGo to Step 2Go to Step 3
2Replace the wiper motor.
Is the repair complete?–System OK–
31. Disconnect the wiper switch.
2. Turn the wiper switch to HI.
3. Use an ohmmeter to check for continuity be-
tween wiper switch terminal A8 and A9.
Does the ohmmeter indicate the specified value?
0 WGo to Step 5Go to Step 4
4Replace the wiper switch.
Is the repair complete?–System OK–
5Repair the open circuit between wiper switch con-
nector terminal A9 and wiper motor connector termi-
nal 5.
Is the repair complete?–System OK–
Wipers Do Not Work On LO Speed, HI Speed OK
StepActionValue(s)YesNo
11. Turn the ignition ON.
2. Turn the wiper switch to LO.
3. Check the voltage at the wiper motor connec-
tor, terminal 6.
Is the voltage equal to the specified value?11–14 vGo to Step 2Go to Step 3
2Replace the wiper motor.
Is the repair complete?–System OK–
31. Disconnect the wiper switch.
2. Turn wiper switch to LO.
3. Use an ohmmeter to check for continuity be-
tween wiper switch terminal A8 and A5.
Does the ohmmeter indicate the specified value?
0 WGo to Step 5Go to Step 4
4Replace the wiper switch.
Is the repair complete?–System OK–
5Repair the open circuit between wiper switch con-
nector terminal A5 and wiper motor connector termi-
nal 5.
Is the repair complete?–System OK–

9D – 8IWIPERS/WASHER SYSTEMS
DAEWOO V–121 BL4
Wipers Do Not Work On Intermittent (INT), Other Speeds OK
StepActionValue(s)YesNo
11. Turn the ignition ON.
2. Turn the wiper switch to INT.
3. Check the voltage at wiper motor connector
terminal 2.
Does the voltmeter indicate a voltage equal to the
specified value?11–14 vGo to Step 5Go to Step 2
2Check for an open circuit between wiper switch con-
nector terminal B2 and wiper motor connector termi-
nal 2.
Is there an open circuit?–Go to Step 4Go to Step 3
3Replace the wiper switch.
Is the repair complete?–System OK–
4Repair the open circuit between wiper switch con-
nector terminal B2 and wiper motor connector termi-
nal 2.
Is the repair complete?–System OK–
51. Turn the ignition ON.
2. Turn the wiper switch to INT.
3. Check for pulsing voltage at wiper motor con-
nector terminal 6.
Does the voltmeter indicate a pulsating voltage
equal to the specified value?11–14 vGo to Step 7Go to Step 6
6Replace the wiper motor.
Is the repair complete?–System OK–
71. Ignition ON.
2. Check the voltage at the wiper switch connec-
tor terminal A6.
Is voltage pulsating at the specified value?11–14 vGo to Step 8Go to Step 9
8Replace the wiper switch.
Is the repair complete?–System OK–
9Repair the open circuit between the wiper switch and
the wiper motor.
Is the relay complete?–System OK–

WIPERS/WASHER SYSTEMS 9D – 9
DAEWOO V–121 BL4
Windshield Wipers Do Not Return To Park Position
StepActionValue(s)YesNo
11. Turn the ignition ON.
2. Check the voltage at the wiper motor connector
terminal 8.
Is the voltage equal to the specified value?11–14 vGo to Step 3Go to Step 2
2Repair the open circuit between the wiper motor
connector terminal 8 and fuse F9.
Is the repair complete?–System OK–
3Replace the wiper motor.
Is the repair complete?–System OK–

9D – 10IWIPERS/WASHER SYSTEMS
DAEWOO V–121 BL4
WINDSHIELD WASHER SYSTEM
Windshield Washer Inoperative, Wipers Work OK
StepActionValue(s)YesNo
1Activate the windshield washer switch.
Do the windshield wipers operate when the washer
switch is activated?–Go to Step 4Go to Step 2
21. Turn the ignition ON.
2. While activating the washer switch, test the
voltage at windshield wiper switch connector
terminal A4.
Is voltage equal to the specified value?11–14 vGo to Step 8Go to Step 3
3Replace windshield wiper switch.
Is the repair complete?–System OK–
4Check the windshield washer fluid reservoir.
Is there washer fluid in the fluid reservoir?–Go to Step 6Go to Step 5
5Fill the windshield washer fluid reservoir.
Is the repair complete?–System OK–
6Check the windshield washer hoses and nozzles.
Are the windshield washer hoses and nozzles
clogged or damaged?–Go to Step 7Go to Step 8
7Repair the washer hoses and the nozzles.
Is the repair complete?–System OK–
81. Turn the ignition ON.
2. With the windshield washer activated, test volt-
age at the windshield washer pump.
Is the voltage equal to the specified value?11–14 vGo to Step 10Go to Step 9
9Repair open circuit between the windshield washer
pump and the windshield wiper switch.
Is the repair complete?–System OK–
10Use an ohmmeter to measure resistance between
ground and the windshield washer pump connector
terminal 1.
Is the resistance equal to the specified value?
0 WGo to Step 12Go to Step 11
11Repair the windshield washer pump ground circuit.
Is the repair complete?–System OK–
12Replace the windshield washer pump.
Is the repair complete?–System OK–

WIPERS/WASHER SYSTEMS 9D – 11
DAEWOO V–121 BL4
REAR WINDOW WIPER (HATCHBACK)
Diagnostic Aids
If the front wiper is operating correctly, begin the diagnostic table at Step 5. It would not be necessary to check the fuse
or power supply circuit.
Rear Window Wiper (Hatchback)
StepActionValue(s)YesNo
1Check fuse F9.
Is fuse F9 blown?–Go to Step 2Go to Step 3
21. Check for a short circuit and repair, if neces-
sary.
2. Replace fuse F9.
Is the repair complete?–System OK–
31. Turn the ignition ON.
2. Check the voltage at fuse F9.
Does the voltage equal the specified value?11–14 vGo to Step 5Go to Step 4
4Repair the open power supply circuit for fuse F9.
Is the repair complete?–System OK–
51. Disconnect the rear wiper motor electrical con-
nector.
2. Turn the ignition ON.
3. Check the voltage at the PNK wire of the rear
wiper motor electrical connector.
Does the voltage equal the specified value?11–14 vGo to Step 7Go to Step 6
6Repair the open circuit for the BRN wire between
fuse F9 and connector at the rear wiper motor.
Is the repair complete?–System OK–
7With the rear wiper motor still disconnected, use an
ohmmeter to check continuity between ground and
the BLK wire of the rear wiper motor connector.
Does the ohmmeter indicate the specified value?
0 WGo to Step 9Go to Step 8
8Repair the open ground circuit for the rear wiper mo-
tor.
Is the repair complete?–System OK–
91. Turn the ignition ON.
2. Turn the rear wiper ON.
3. Check the voltage at the WHT wire at the rear
wiper motor connector.
Does the voltmeter indicate the specified value?11–14 vGo to Step 10Go to Step 11
10Replace the rear wiper motor.
Is the repair complete?–System OK–
111. Disconnect the wiper switch electrical connec-
tor.
2. Turn the ignition ON.
3. Check the voltage at terminal A3 (BRN).
Is the voltage equal to the specified value?11–14 vGo to Step 13Go to Step 12
12Repair the open circuit between fuse F9 and the wip-
er switch connector terminal A3.
Is the repair complete?–System OK–

9D – 12IWIPERS/WASHER SYSTEMS
DAEWOO V–121 BL4
StepNo Yes Value(s) Action
131. Connect an ohmmeter between terminals A1
and A3 of the wiper switch.
2. Observe the ohmmeter when the rear wiper
switch is moved to the WIPE position.
Does the ohmmeter indicate the specified value?
0 WGo to Step 14Go to Step 15
14Repair the open circuit between terminal A1 of the
wiper connector (WHT wire) and the rear wiper mo-
tor.
Is the repair complete?–System OK–
15Replace the wiper switch.
Is the repair complete?–System OK–

WIPERS/WASHER SYSTEMS 9D – 13
DAEWOO V–121 BL4
REAR WINDOW WASHER SYSTEM (HATCHBACK)
StepActionValue(s)YesNo
1Check the washer fluid level.
Is there fluid in the washer reservoir?–Go to Step 3Go to Step 2
2Fill the washer reservoir.
Is the repair complete?–System OK–
3Verify that the hoses are not obstructed or leaking by
disconnecting the washer hose and blowing through
it toward the reservoir and also toward the nozzle.
Are the hoses obstructed or leaking?–Go to Step 4Go to Step 5
4Repair or replace the hoses.
Is the repair complete?–System OK–
5Check the function of the rear wiper.
Does the rear wiper function correctly?–Go to Step 7Go to Step 6
6Repair the rear wiper.
Is the rear wiper repair complete?–Go to Step 7–
71. Disconnect the electrical connector at the
washer pump.
2. Use an ohmmeter to check continuity between
the BLK wire of the washer pump connector
and ground.
Does the ohmmeter indicate the specified value?
0 WGo to Step 9Go to Step 8
8Repair the open or the high–resistance ground con-
nection.
Is the repair complete?–System OK–
9Check the voltage at the washer pump connector
(LT RED wire) when the rear washer is turned ON.
Is the voltage equal to the specified value?11–14 vGo to Step 10Go to Step 11
10Replace the washer pump.
Is the repair complete?–System OK–
111. Disconnect the wiper switch.
2. Connect an ohmmeter between terminal 3 and
terminal A2 of the wiper switch.
3. Observe the ohmmeter when the switch is
moved to the rear WASH position.
Does the ohmmeter indicate the specified value?
0 WGo to Step 12Go to Step 13
12Repair the open circuit between terminal A2 of the
wiper switch connector and the rear washer pump.
Is the repair complete?–System OK–
13Replace the wiper switch.
Is the repair complete?–System OK–