Page 2245 of 2643

LIGHTING SYSTEMS 9B – 19
DAEWOO V–121 BL4
StepNo Yes Value(s) Action
121. Reinstall the headlamp relay.
2. Check the voltage at the light switch connector
terminal 2.
Does the voltage equal the specified value?11–14 vGo to Step 14Go to Step 13
13Repair the open circuit between headlamp relay ter-
minal 85 and the light switch connector terminal 2.
Is the repair complete?–System OK–
141. Disconnect the light switch connector.
2. Turn the headlamps to the low–beam position.
3. Use an ohmmeter to check the continuity be-
tween terminals 2 and 3 of light switch.
Does the ohmmeter indicate the specified value? 0 WGo to Step 16Go to Step 15
15Replace the light switch.
Is the repair complete?–System OK–
16Repair the open circuit between terminal 3 of light
switch connector and ground.
Is the repair complete?–System OK–
17Check the voltage at headlamp switch connector
terminal 6.
Does the voltage equal the specified value?11–14 vGo to Step 19Go to Step 18
18Repair the open circuit between headlamp switch
connector and terminal 87 of the headlamp relay.
Is the repair complete?–System OK–
191. Disconnect headlamp switch connector.
2. Turn the headlamps to the low–beam position.
3. Connect an ohmmeter between terminals 5
and 6 of headlamp switch connector. Observe
the reading on the ohmmeter.
4. Turn the headlamps to the high–beam position.
5. Connect an ohmmeter between terminals 4
and 6 of the headlamp switch. Observe the
reading on the ohmmeter.
Does the ohmmeter show the specified value for
both of the tests? 0 WGo to Step 20Go to Step 15
20Repair the open circuit between the headlamp
switch and fuses Ef20, Ef27 and Ef15.
Is the repair complete?–System OK–
Page 2246 of 2643

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–
Page 2260 of 2643

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
Page 2261 of 2643
LIGHTING SYSTEMS 9B – 35
DAEWOO V–121 BL4
StepNo Yes Value(s) Action
12Repair the open circuit between the fog lamp relay
terminal 87 and the fog lamps.
Is the repair complete?–System OK–
13Use an ohmmeter (or test lamp) to check the ground
at terminal 1 of the fog lamp connector.
Does the resistance equal the specified value?0 WGo to Step 15Go to Step 14
14Repair the fog lamp ground circuit.
Is the repair complete?–System OK–
15Replace the faulty fog lamp bulbs.
Is the repair complete?–System OK–
Page 2285 of 2643

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–
Page 2302 of 2643
INSTRUMENTATION/DRIVER INFORMATION 9E – 3
DAEWOO V–121 BL4
SCHEMATIC AND ROUTING DIAGRAMS
INSTRUMENT CLUSTER CIRCUIT (1 OF 2)
Rear Fog
Relay
ORN[N/B]
ORN/BLK[H/B][ ] : HATCHBACK
Anti–theft
Control
Unit
Page 2426 of 2643

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–
Page 2427 of 2643

DOORS 9P – 7
DAEWOO V–121 BL4
StepNo Yes Value(s) Action
11With the power window relay still removed,
use an ohmmeter to check the resistance be-
tween ground and terminal 86 of the power
window relay socket.
Does the ohmmeter indicate the specified val-
ue? 0 WGo to
Step 13Go to
Step 12
12Repair the open circuit between ground and
terminal 86 of the power window relay socket.
Is the repair complete?–System
OK–
131. Temporarily substitute a known good relay in
place of the power window relay.
2. Attempt to operate the power windows.
Do the power windows operate with the sub-
stituted relay?–Go to
Step 14Go to
Step 15
141. Return the substituted relay to its original
position.
2. Replace the original power window relay.
Is the repair complete?–System
OK–
15Repair the open circuit between the power
window relay socket terminal 87 and the dual
power window switch terminal 4 and 5.
Is the repair complete?–System
OK–
16With the dual power window switch discon-
nected, use an ohmmeter to check the resist-
ance between ground and terminal 7 of the
dual power window switch connector.
Is the resistance equal to the specified value? 0 WGo to
Step 18Go to
Step 17
17Repair the open circuit between ground and
terminal 7 of the dual power window switch
connector.
Is the repair complete?–System
OK–