Page 2425 of 2643
DOORS 9P – 5
DAEWOO V–121 BL4
POWER WINDOWS CIRCUIT (FRONT AND REAR)
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–
Page 2428 of 2643

9P – 8IDOORS
DAEWOO V–121 BL4
StepNo Yes Value(s) Action
181. Remove the trim panel from a door which
has an inoperative power window.
2. Move a vehicle battery close enough to the
door so that the window motor can be pow-
ered directly from the battery with jumper
wires.
3. Disconnect the the two–pin window motor
connector in the door.
Important : To prevent the fuse in the jumper wire
from blowing, do not touch the jumper wires togeth-
er.
1. Attach a jumper wire between the battery
negative terminal and one of the terminals in
the two–pin window motor connector.
2. Attach a fused jumper wire between the bat-
tery positive terminal and the remaining ter-
minal in the two–pin window motor connec-
tor. Unless the motor is at the end of its trav-
el, the window should move with the jumpers
attached.
3. To move the window in the opposite direc-
tion, reverse the jumper wire connections at
the window motor connector.
Does the power window operate in both direc-
tions when the motor is operated directly from
a battery?–Go to
Step 20Go to
Step 19
19Replace the window motor.
Is the repair complete?–System
OK–
201. Before reconnecting the two–pin window mo-
tor connector, connect an ohmmeter between
the terminals to check the resistance of the
motor.
2. Record the ohmmeter reading for motor re-
sistance.
3. Reconnect the motor connector and reinstall
the door trim panel.
4. Disconnect the electrical connector from the
dual power window switch.
5. At the dual power window switch connector,
use an ohmmeter to check the resistance
between the terminals which lead to the mo-
tor that was tested in Step 15
Is the resistance at the switch connector
approximately equal to the resistance that
was previously measured at the motor con-
nector?–Go to
Step 22Go to
Step 21
21Repair the open circuit between the window
motor and the window switch.
Is the repair complete?–System
OK–
22Replace the power window switch.
Is the repair complete?–System
OK–
Page 2429 of 2643

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–
Page 2430 of 2643

9P – 10IDOORS
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 85 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 85 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 pow-
er window switch terminal 3 and 10.
Is the repair complete?–System
OK–
16With the power window main switch discon-
nected, use an ohmmeter to check the resist-
ance between ground and terminal 11 of the
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 8 of the power window main switch
connector.
Is the repair complete?–System
OK–
Page 2431 of 2643

DOORS 9P – 11
DAEWOO V–121 BL4
StepNo Yes Value(s) Action
181. Remove the trim panel from the front door
which has an inoperative power window.
2. Move a vehicle battery close enough to the
door so that the window motor can be pow-
ered directly from the battery with jumper
wires.
3. Disconnect the the two–pin window motor
connector in the door.
Important : To prevent the fuse in the jumper wire
from blowing, do not touch the jumper wires togeth-
er.
1. Attach a jumper wire between the battery
negative terminal and one of the terminals in
the two–pin window motor connector.
2. Attach a fused jumper wire between the bat-
tery positive terminal and the remaining ter-
minal in the two–pin window motor connec-
tor. Unless the motor is at the end of its trav-
el, the window should move with the jumpers
attached.
3. To move the window in the opposite direc-
tion, reverse the jumper wire connections at
the window motor connector.
Does the power window operate in both direc-
tions when the motor is operated directly from
a battery?–Go to
Step 20Go to
Step 19
19Replace the window motor.
Is the repair complete?–System
OK–
201. Before reconnecting the two–pin window mo-
tor connector, connect an ohmmeter between
the terminals to check the resistance of the
motor.
2. Record the ohmmeter reading for motor re-
sistance.
3. Reconnect the motor connector and reinstall
the door trim panel.
4. Disconnect the electrical connector from the
power window switch.
5. At the power window main switch connector,
use an ohmmeter to check the resistance
between the terminals which lead to the mo-
tor that was tested in Step 15.
Is the resistance at the main switch connector
approximately equal to the resistance that
was previously measured at the motor con-
nector?–Go to
Step 22Go to
Step 21
21Repair the open circuit between the window
motor and the window switch.
Is the repair complete?–System
OK–
22Replace the power window switch.
Is the repair complete?–System
OK–
Page 2432 of 2643

9P – 12IDOORS
DAEWOO V–121 BL4
System With Front and Rear Power Windows, One or Both Rear
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. Make sure that the window lock position has
not been selected on the power window main
switch.
Is either rear power 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 EF9 and EF14.
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. Turn the ignition ON.
2. Remove the power window relay.
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–